EP4017655A1 - Procédé de recyclage de laine isolante, dispositif pour traiter de la laine isolante, mousse renforcée par fibres, matériau dérivé du bois résistant au feu et procédé de fabrication d'un matériau dérivé du bois résistant au feu - Google Patents

Procédé de recyclage de laine isolante, dispositif pour traiter de la laine isolante, mousse renforcée par fibres, matériau dérivé du bois résistant au feu et procédé de fabrication d'un matériau dérivé du bois résistant au feu

Info

Publication number
EP4017655A1
EP4017655A1 EP20760799.5A EP20760799A EP4017655A1 EP 4017655 A1 EP4017655 A1 EP 4017655A1 EP 20760799 A EP20760799 A EP 20760799A EP 4017655 A1 EP4017655 A1 EP 4017655A1
Authority
EP
European Patent Office
Prior art keywords
wood
wool
insulating
recycled
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20760799.5A
Other languages
German (de)
English (en)
Inventor
Rudolf Freundorfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bkrz GmbH
Original Assignee
Bkrz GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bkrz GmbH filed Critical Bkrz GmbH
Publication of EP4017655A1 publication Critical patent/EP4017655A1/fr
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B09B3/32—Compressing or compacting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
    • C03B19/063—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction by hot-pressing powders
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/08—Other methods of shaping glass by foaming
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4274—Rags; Fabric scraps
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/60—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/12—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged below container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B29K2995/0015—Insulating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • E04B2001/746—Recycled materials, e.g. made of used tires, bumpers or newspapers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/78—Recycling of wood or furniture waste
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to a method for producing a recycled insulating material from insulating wool, a method for recycling insulating wool, a device for processing insulating wool, a fiber-reinforced foam, a flame-resistant wood-based material and a method for producing a fuel-resistant wood-based material.
  • Insulating wool such as mineral wool, including glass wool, rock wool, slag wool or Ultimate wool, are used to insulate roofs, beam ceilings and doors, as these not only have very good insulating properties, but are also very light and insensitive to moisture, mold and pests are.
  • this object is achieved according to the invention by a method for producing a recycled insulating material from insulating wool, which comprises the steps:
  • Insulating fabric Insulating fabric
  • the recycled insulation material produced in this way can be used as a new insulation material and prevents the insulation wool used in the process from being disposed of in a landfill and thus causing high disposal costs and high environmental pollution.
  • the recycled insulation material can be used again, like the insulation wool to be recycled, to insulate roofs, beamed ceilings and doors, for example.
  • the insulating wool can be shredded into three different fractions.
  • a first fraction with preferably 5% to 25% of the total amount can comprise dusts and particles. These dusts and particles are so small that they can be added to the raw melt in the new production of insulating wool in a conventional process in which, among other things, fine-grain sand is used as the starting material.
  • a second fraction with preferably 30% to 45% of the total amount can comprise individual fibers and fiber bundles. Their size is also small enough to mix them in with a conventional filling process of insulating wool.
  • a third fraction with preferably 35% to 60% of the total amount can comprise fiber balls, the diameter of which is preferably between 0.1 mm and 1 cm. These fiber balls are encompassed by the first intermediate product, which is used in the method according to the invention for laying a recycled insulation material.
  • the fiber balls can, for example, be poured into a fiber body to which the binding agent is added in step S2.
  • the fiber body can already be brought into the desired shape and the binder can be sprayed onto the fiber body in order to obtain the second intermediate product.
  • a desired shape can be, for example, a plate shape, a plate shape, a pipe shape or any curved shape.
  • the second intermediate product can be a fiber pulp which can be shaped into a shape.
  • various possibilities can be used, such as mixing, stirring, wetting or impregnating.
  • a fiber pulp, a wetted fiber body or a fiber composite can be produced as a second intermediate product.
  • the wetting can vary within the fiber pulp, the fiber body or the fiber composite.
  • the second intermediate product can be designed as a relatively dry fiber composite, with binders that fuse preferably at low temperatures, for example 60 ° C. to 150 ° C.
  • a moistened, possibly wet, second intermediate product can also be added by adding water in step S2 for better malleability of the second intermediate product, for example by pouring, flaking, stirring or mixing.
  • the added water can be removed again by evaporation at temperatures of 100 ° C to 180 ° C.
  • measures described later such as the use of structural elements, such as a skeleton construction or open souls, can be used to support this.
  • the binder can be organic or inorganic or a mixture of both.
  • water glass in particular low-sodium water glass
  • renewable raw materials such as starch, for example corn, potato and vegetable starch, lignin and sugar, or other organic substances, such as resins, for example melamine, urea resin or phenolic resin
  • resins for example melamine, urea resin or phenolic resin
  • Such organic binders are preferably used which, in a subsequent pyrolysis treatment, such as, for example, a high-temperature process, ensure the highest possible yield of pyrolysis coal.
  • the insulating wool to be shredded is rock wool and the binding agent is inorganic, in particular comprises water glass, or the insulating wool to be shredded is glass wool and the binding agent is organic, in particular one or more of powder, urea, Resins, starch,
  • step S2 which influence the properties of the recycled insulation material to be produced.
  • a foaming agent can be added as a possible additive in step S2, so that the second intermediate product comprises the foaming agent in addition to the first intermediate product and the binder.
  • the term “foaming agent” can be used synonymously for a catalyst or a propellant and can be baking powder or sugar, for example. But renewable raw materials such as vegetable starches, sugar, lignin and biological catalysts are also conceivable.
  • the foaming agent can lead to the formation of cavities in the recycled insulation material, as a result of which the density of the recycled insulation material is lower and the recycled insulation material is thus lighter.
  • An inorganic foaming agent such as aluminum powder can also be used. All of the aforementioned foaming agents, which are preferably suitable for the formation of cavities in the recycled insulation material, can also be viewed as insulation-supporting additives, since the cavities ensure a good insulating effect.
  • step S2 Another additive that can be added in step S2 is a semi-finished material, such as foam glass granulate, which further optimizes the properties of the recycled insulation material.
  • a semi-finished material such as foam glass granulate
  • prefabricated semi-finished materials such as foam glass granulate in different grain sizes, can also be added in step S2 become.
  • step S2 Another additive that can be added in step S2 is latex, for example in liquid form. This can increase the moisture and water resistance of finished recycled insulation materials.
  • Another additive that can be added in step S2 is slaked quicklime, such as slaked lime or slaked lime, which can be used in conjunction with an inorganic binder.
  • additives that can be added in step S2 are, for example, organic residues, such as straw or sawdust, or inorganic or mineral fillers, e.g. B. clay, rock flour, pumice or calcium silicate.
  • organic residues such as straw or sawdust
  • inorganic or mineral fillers e.g. B. clay, rock flour, pumice or calcium silicate.
  • An organic foaming agent is preferably used if glass wool is comminuted as insulating wool in step S1, and an inorganic foaming agent is used if stone wool is comminuted as insulating wool in step S1. This has the advantage that these material combinations react particularly well with one another.
  • the recycled insulation material can have improved fire resistance if non-flammable rock wool is used as the insulation wool and only inorganic binders are used, i.e. the addition of organic binders or other organic additives is avoided.
  • the fire protection properties of the recycled insulation material can be improved if inflammable organic materials are dispensed with.
  • wood chips, natural fibers and / or synthetic fibers which are particularly characterized by their excellent ecological balance.
  • the second intermediate product in addition to the first intermediate product and the binding agent, would also include wood chips, natural fibers and / or synthetic fibers and possibly the foaming agent.
  • the addition of wood chips can increase the compressive strength of the recycled insulation material and improve its sound insulation.
  • wood chips impregnated with water glass can increase the fire resistance of the recycled insulation material.
  • These wood chips impregnated with water glass are preferably used if stone wool is comminuted as insulating wool in step S1.
  • Wood chips from renewable raw materials are particularly preferable as a possible raw material for wood chips, since these are easy to process, easy to recycle and enable the advantages mentioned above.
  • Renewable raw materials for use as wood chips are, for example, poplar, birch and willow, of which damaged wood and windbreak wood can also be used.
  • wood chips, natural fibers and / or synthetic fibers as additives with a suitable choice of binders can be used to produce high-quality, completely prefabricated recycled insulation wall laminates for system construction methods that meet the highest fire protection requirements.
  • the fire-resistant wood-based material comprises a wooden strip which, for example, has a thickness of 1 mm to 10 mm, a width of 1 mm to 50 mm and a length of 500 mm to 4,000 mm and is preferably spiked, comprises insulating wool fibers and comprises a binder, which preferably has penetrated into the wood strips by means of the spiked design and with which the wood strips are impregnated, the binder being selected from one or more of inorganic waterglass, inorganic waterglass specifications, organic resins such as urea, melamine or phenol, fire-retardant additives such as precipitants or acids or acid hardeners.
  • the wooden strips can be placed in a composite in order to generate high flexural strength.
  • the strips of wood can in essence be arranged parallel to each other planes in order to obtain a material with good flexural strength.
  • the wooden strips can run crosswise or diagonally to one another within these planes, so that the flexural strength is increased even further.
  • the insulation wool fibers of the wood material can be obtained by crushing insulation wool, for example when recycling insulation wool according to the invention.
  • Another additive that can be added in step S2 comprises fire retardants. If fire resistance should be improved, especially when using glass and mineral wool as insulating wool, conventional flame retardants and flame retardants, e.g. those used in the field of plastic insulation, can be added as additives in step S2. Precipitants such as acids or acid hardeners can also be added.
  • Possible additives can protect the resulting recycled insulation material against pests during later use, so that it can advantageously be used in areas close to the earth. However, a growth basis for pests can also be excluded from the outset.
  • a final high-temperature treatment such as the pyrolysis treatment described below, all organic components in the insulating wool, in the binding agent or in other additives that enable pest growth can be converted into gas and expelled from the recycled insulating wool.
  • the ball of fibers or the recycled insulation material included in the first intermediate product can already be impregnated against moisture.
  • mineral impregnations such as Geniseptoy
  • coating with or / and drying out Water glass or modified water glass can provide permanent moisture protection if this is carried out on the fiber balls or the recycled insulation wool.
  • the second intermediate product is preferably in the form of a pulp.
  • the addition of water in step S2 is also possible here if the second intermediate product is too dry or does not have the shape of a desired pulp. In order to improve the adhesion of additives to the first intermediate product, this can also be wetted with water. This is particularly recommended for powder additives.
  • the second intermediate product comprising the binder and optionally one or more additives is heat-pressed into the desired shape in step S3.
  • the meat pressing is used to create a third intermediate product, in which the binding agent and optionally one or more additives can be incorporated into the first intermediate product.
  • a third intermediate product is preferably produced, which can also be referred to, for example, as a fiber body or a fiber molded body, the density of which depends mainly on the pressure applied during the meat pressing.
  • the parameters to be selected for the meat pressing depend on the particular binder selected and must be selected so that the binder reacts and bonds with the fiber balls of the first intermediate product.
  • the parameters temperature, pressure and time are preferably chosen so that large pores remain in the third intermediate product.
  • the second intermediate product is preferably pressed into shape in step S3 at a temperature of 50 ° C. to 180 ° C. and a pressure of 0.05 bar to 5 bar, or 0.05 kg / cm 2 to 5 kg / cm 2 .
  • a preferred dwell time can be between 5 minutes and 240 minutes.
  • the third intermediate product can have a different density, wherein a higher pressure leads to a higher density.
  • the parameters mentioned can vary within the specified ranges depending on the type of insulating wool used, the binding agent added and, if necessary, one or more additives added.
  • suitable parameters for the meat pressing in step S3 can be a pressure of 0.1 bar to 5 bar, or 0.1 kg / cm 2 to 5 kg / cm 2 , a temperature from 80 ° C to 180 ° C and a dwell time of 20 min to 240 min.
  • suitable parameters for the fleece pressing in step S3 can be a pressure of 0.05 bar to 2 bar, or 0.05 kg / cm 2 to 2 kg / cm 2 , a temperature from 50 ° C to 160 ° C and a dwell time of 5 min to 150 min.
  • the recycled insulation material can be heat-pressed with low pressure and preferably high temperatures in step S3, as a result of which the water resistance is increased.
  • Panels for outdoor use can be hardened with higher pressure, since a dense material is usually required for outdoor use. Materials with higher densities show less water retention behavior, which increases their resistance to weathering.
  • a wood material of the type according to the invention described above can be pressed during the meat pressing with such a pressure that the resulting material has a density of over 1 kg / cm 3 .
  • gases or vapors can arise, which can preferably escape from the third intermediate product that is being formed or has already formed.
  • structural elements such as channels, wires, grooves,
  • Cores, bores and / or lattice structures are provided, which can be arranged within the second intermediate product and, if necessary, can be removed after the hot pressing.
  • the structural elements can be made of wood or wood materials.
  • Such structural elements can be formed from the same recycled insulation material that has already been manufactured and cured in a previous step and can have channels, grooves, bores or lattice structures, for example.
  • a further advantage of such channels is an improved introduction of heat into the second intermediate product to be pressed, since the hot air can penetrate directly into the interior of the material via the channels.
  • the structural elements could be made of a different material, for example a material with a higher load-bearing capacity, so that the resulting recycled insulation material is statically reinforced and can thus withstand higher loads.
  • a material with a higher load-bearing capacity can be used for a wall or for wall cores for walls. Examples of such a material are kerto wood or glued wood.
  • the above-mentioned, fire-resistant wood-based material according to the invention is used.
  • a fire-resistant wood-based material can be assigned to fire resistance class B1 (according to EN 13501-1 and DIN 4102-1). Any spikes that may be present can improve the penetration of the binding agent into the wood stiffener.
  • a method for producing a flame-resistant wood material comprises the step of providing a wood strip, for example with a thickness of 1 mm to 10 mm, a width of 1 mm to 50 mm and a length of 500 mm to 4,000 mm , optionally a spike of the wood strip and an impregnation of the wood strip with a liquid binder, which is selected from one or more of inorganic water glass, inorganic water glass specifications, organic resins such as urea, melamine or phenol, and fire-retardant additives such as precipitants or acids or acid hardeners, as well as adding insulating wool fibers.
  • a spike tool such as a spiked roller, for example, can be used to spike.
  • the spines can be present at least every 3 mm.
  • the insulating wool fibers are preferably mixed with the binder to form a pulp and then the wood strips are moistened with this pulp, e.g. poured over them.
  • the profile can also be assigned to fire resistance class B1 (according to EN 13501-1 and DIN 4102-1).
  • the wooden strips can be glued and glued under high pressure similar to the known OSB process to form a new type of wood-based material in fire resistance class, at least B1 or higher be pressed.
  • the process can be precisely controlled and clocked using pressure and temperature sensors.
  • the method for producing a wood-based material can therefore further include providing a plurality of impregnated wood strips which have been produced as described above, optionally applying adhesive to the plurality of wood strips and pressing the plurality of wood strips together.
  • the wood strips can be made of spruce wood, preferably spruce wood damaged by bark beetles, and / or poplar-like woods.
  • the use of fast-growing poplar-like woods is particularly suitable here.
  • birch and willow, of which damaged wood and windbreak wood can also be used, are conceivable as raw materials for the wood strips. When choosing, the sustainability of the raw materials can be taken into account.
  • the third intermediate product obtained after the hot pressing is then cured in step S4.
  • the hardening comprises cooling the third intermediate product to form the recycled insulation material, which preferably results in a tight body.
  • the recycled insulation material obtained after cooling can already be used as insulation material, for example as a weather-resistant panel material for outdoor use. Applications for finished system components for building construction are also conceivable.
  • Weather-resistant panels made of recycled insulation material for outdoor use and an A2 (according to EN 13501-1 and DIN 4102-1) fire-resistant recycled insulation material can be created after cooling in step S4 when using rock wool as insulation wool and inorganic binders. These can be used for outdoor use in the form of panels made of recycled insulation material, For example, if foam glass granulate was added as an additive in step S2.
  • the recycled insulating wool obtained in this way ie by cooling in step S4, which can also be referred to as a fiber body, can have sufficient strength for direct use as an insulating material. Furthermore, this recycled insulation wool can have a dimensional stability and resistance to distortion that is sufficient for further processing. It can also be robust enough that it can be handled in a production process that includes processes such as stacking, temporary storage, loading and removal.
  • step S4 of curing can also include further treatment steps for the third intermediate product in addition to cooling or as an alternative to cooling.
  • the hardening in step S4 preferably includes a pyrolysis treatment of the third intermediate product to form the recycled insulation material.
  • recycled insulation materials that have been subjected to pyrolysis treatment are referred to as refined recycled insulation materials.
  • the pyrolysis treatment can take place directly after the meat pressing step or after the third intermediate product has cooled down.
  • a pyrolysis treatment is understood to mean a heat treatment, coking, an annealing process and / or a sintering process.
  • the pyrolysis treatment can lead to the refined recycled insulation material, which is more resistant to fire than a non-refined recycled insulation material.
  • a very high quality mineral fiber-based insulation foam can be obtained, which can be used particularly advantageously in an area close to the ground.
  • the carbon required for upgrading can already be contained in the recycled insulation material.
  • This can be contained in the binder or as an additive, for example as a carbon-containing additive, added in step S2.
  • Carbon-containing additives can be renewable resources such as starch, e.g. corn, potato and vegetable starch, sugar and lignin. During pyrolysis treatment, these can help to create an open-cell or closed-cell foam structure.
  • the pyrolysis treatment is carried out with the exclusion of oxygen at temperatures between 400 ° C. and 1450 ° C. and the residence time is preferably from 3 minutes to several hours, for example up to about 25 minutes to 2 hours.
  • the temperature and / or the dwell time is preferably selected such that a closed-cell carbon foam is formed during the pyrolysis treatment, for example the coking.
  • the temperatures can be specified in such a way that the harmful substances contained therein decompose or change into the gas phase.
  • the resulting gases can be collected and fed back into the process as an energy supplier. This is an advantage, for example, if type 3 insulating wool is used that does not have a RAL quality mark.
  • the pyrolysis treatment for example thermal post-treatment, takes place at lower temperatures and shorter processing times.
  • rock wool can be used as insulation wool in step 1, whereby the dwell time and the temperature increase.
  • the pyrolysis treatment for example the tempering process, can also have a residence time of several hours, including heating and cooling phases, in order to obtain particularly high-quality new building materials.
  • a precisely controlled cooling phase in particular ensures resistance to distortion and freedom from cracks.
  • additives with a carbon content which can be contained in the binder or can be added as a carbon-containing additive, can be used to firmly bind harmful short mineral fibers, which may still be contained in the insulation wool to be recycled, in the recycled insulation material. In this way a harmful effect can be avoided.
  • the pyrolysis treatment is a sintering process
  • an element contained in rock wool for example silicon
  • the carbon-containing binder or a carbon-containing additive which leads to the formation of silicon carbide.
  • a possible sintering process can take place at temperatures between 1200 ° C and 1450 ° C. In this way, a very high quality mineral foam can be formed. This can, for example, meet or even exceed the requirements placed on insulating materials such as foam glass (molded glass).
  • the temperature ranges mentioned above for the pyrolysis treatment are suitable for bringing about a fusion of carbon with the fibers of the fiber ball and for forming a fiber-reinforced, refined recycled insulation material.
  • a foaming agent was preferably added as an additive in step S2, which results in a fiber-reinforced carbon foam.
  • the advantages mentioned above with regard to the foaming agents result, namely a recycled insulating material which, due to its low density, is relatively light and has good insulating properties.
  • the above-mentioned object is achieved by a method for recycling insulating wool.
  • the method according to the invention comprises a method according to the first aspect of the invention.
  • This process for recycling insulating wool makes it possible to recycle a further fraction of shredded insulating wool, namely the fraction containing the individual fibers and small fiber bundles, by adding the individual fibers and small fiber bundles to a conventional method for producing insulating wool.
  • the disposal costs and the environmental pollution caused by the insulating wool to be disposed of are thus reduced.
  • the above-mentioned object is achieved by the device according to the invention for processing insulating wool.
  • the inventive device for processing insulation wool comprises a drum, a tool group which is arranged on a lower region of the drum, a drive which drives the drum and the tool group to rotate relative to one another, a housing enclosing the drum, a suction device and an actuating element.
  • At least one outer wall of the drum has an opening, so that there is a gap between an outer side of the drum and an inner side of the housing Housing is connected via the opening to an interior of the drum, wherein a position of the adjusting element determines how much material can pass through the opening, and wherein the suction device is set up to suck off material located in the space.
  • the device according to the invention makes it possible to shred insulating wool to be recycled, so that it can be further processed into recycled insulating material and / and can be fed to a conventional method for producing insulating wool. It therefore contributes to the fact that less insulation wool has to be disposed of in landfills, which reduces the disposal costs of insulation wool and the environmental impact of dumped insulation wool.
  • the device according to the invention can be used in the method for producing a recycled insulating material according to the first aspect of the invention in step S1 in order to shred insulating wool to be recycled.
  • the device can be suitable for comminuting the insulating wool into the three different fractions mentioned at the beginning, ie into the first fraction with preferably 5% to 25% of the total amount, which can comprise dust and particles, the second fraction with preferably 30% to 45% of the total amount, which can comprise individual fibers and fiber bundles, and the third fraction with preferably 35% to 60% of the total amount, which can comprise fiber balls.
  • the device according to the invention is preferably set up to process insulating wool in such a way that different fractions, for example the aforementioned three fractions, can be removed.
  • the device comprises the tool group, which comprises at least one tool.
  • the tool group can, for example, be a working shaft or disk equipped with tools be.
  • the tool group can preferably engage or protrude into an interior space of the drum.
  • the tool group comprises at least one tool which is selected from a rake, a rod, a cutting tool, a friction body, a trapezoid, a comb, a mallet, in particular a spherical mallet, or a combination thereof. All these tools are suitable for shredding the insulation wool and breaking it down into several fractions, such as the three fractions mentioned above.
  • the fibers can be rubbed with the tools mentioned.
  • blunt tools are used here, for example in the form of a rod, a trapezoid or a mallet.
  • Blunt knife-like cutting tools are well suited, for example, since the insulating wool introduced into the drum, in contrast to the use of sharp cutting edges, is not undesirably comminuted too much. This means that fewer dusts and particles can arise and the proportion of material fractions that can be used for new recycling insulation wool can be increased. Mallets included in the tool group can tear up material residues in the drum better and introduce them into the material flow.
  • material in the drum such as insulating wool or already shredded insulating wool, falls in the form of fibers, balls, bundles, etc. in the direction of the tool group due to gravity.
  • a material flow generated in the drum for example made of insulating wool or already crushed insulating wool, can be such that the tool group can grasp the material.
  • the relative movement between the drum and tool group generated by the drive is preferably such that a central, in particular elliptical, material flow is in the drum results.
  • a drum in the shape of a cylinder can suitably be used to achieve the desired flow of material.
  • the device can further comprise an inner drum wall tool group which is arranged on or adjacent to an inner drum wall of the drum.
  • the tool group arranged on the drum wall preferably comprises one or more tools selected from a rake, a rod, a comb, a cutting tool, a friction body, a trapezoid and a mallet, preferably a spherical mallet.
  • the opening is arranged on a lateral surface of the drum, on the outside or inside of which the adjusting element is arranged, by means of whose positioning the opening area of the opening is determined through which material can pass.
  • Material such as insulating wool or already shredded insulating wool, which is of an appropriate size to pass through the opening, can thus leave the interior of the drum and be removed from the gap by the suction device. In this way it can be avoided to stop the system for removing the material from the drum.
  • the adjusting element can particularly advantageously be changed during operation of the device, that is to say when there is a relative movement between the tool group and the drum, so that different fractions can be removed from the drum one after the other. It is also possible to catch the fiber balls in a targeted manner on segments arranged in the drum and to remove them when the device is at a standstill. It is also possible that suspended matter such as small particles and dusts are extracted directly from the drum against the direction of gravity, for example by means of the extraction device.
  • a central region of the drum is empty, that is to say no segment and no tool group is arranged in it.
  • a fiber-reinforced foam which can be used as an insulating material.
  • the fiber-reinforced foam according to the invention comprises a foam and fibers which are embedded in the foam.
  • the fiber-reinforced foam according to the invention can be produced, for example, by means of the method as described in the first aspect of the invention. It can be used as an insulating material and is characterized by its very low weight and its high static load capacity.
  • the fiber-reinforced foam can result from the accumulation of pyrolysis carbon during the pyrolysis treatment, for example a high-temperature process, on the fiber balls.
  • pyrolysis carbon for example a high-temperature process
  • all additives, fillers and extenders will be converted into pyrolysis coal.
  • some of the carbon that is formed or the pyrolysis carbon from the additives and from the binder coats or fuses with the contained fiber structure.
  • a foam with fiber-reinforced cell walls can result.
  • Organic binders or additives such as starch foam up during the process due to their popcorn effect. Correspondingly, these can be deposited on the fibers or fiber balls with cavities.
  • starch If starch is added as an additive in step S2, it can foam up during the pyrolysis treatment, where water is split off and water vapor is formed before an elemental carbon is formed. Thanks to the popcorn effect mentioned, further propellants can be dispensed with when using starch.
  • Starch can be used in natural or modified starch in solid or dissolved form.
  • Pressed recycled insulation panels produced after heat pressing can be provided with a glass fiber fabric or aluminum foil on one or both sides before the pyrolysis treatment if the pyrolysis treatment is carried out at temperatures below the melting temperature of the glass fiber fabric or the aluminum foil.
  • the recycled insulation material can shield electromagnetic waves, also known as electrosmog.
  • Lignin for example, due to its aromatic structure, generates a particularly high proportion of pyrolysis carbon, which can easily attach to the fibers or fiber lumps and fuse with them to form a material.
  • Sugar and lignin for example, melt before the pyrolysis treatment and envelop the fibers of the fiber balls, which leads to better strength in the end product.
  • water glass for example modified water glass, can be applied to the pyrolysis coal.
  • the recycled insulation material refined by pyrolysis treatment can be provided with powder coating / stove enamelling or ceramic enamelling, whereby the weather resistance and / or the visual appearance of the material are improved.
  • FIG. 1 a flow chart of a method for removing a recycled insulation material
  • FIG. 2 shows a plan view of a collection of fiber balls made of comminuted glass wool (FIG. 2a) and comminuted rock wool (FIG. 2b);
  • FIG. 3 shows a schematic representation of a device for processing insulation materials
  • FIG. 4 shows a tool group which can be used in the device shown in FIG. 3,
  • FIG. 5 shows a tool group comprising a mallet, which can be used in the device shown in FIG. 3,
  • FIG. 6 shows a cross section through a fiber-reinforced foam.
  • FIG. 1 shows a flowchart of a method for placing a recycled insulating material made of insulating wool, which comprises steps S1 to S4 according to the invention.
  • the process steps and products outlined in solid lines in FIG. 1 are those which are required for the method for placing a recycled insulation material made of insulating wool, whereas the products outlined with dashed lines are optional.
  • the insulating wool is comminuted in step S1 in order to obtain a first intermediate product which comprises fiber balls 20.
  • exemplary fiber balls 20 made of rock wool or glass wool can be seen in FIGS. 2a and 2b.
  • the fiber balls shown have a maximum extension of 0.1 cm to 1 cm.
  • a fiber ball made of glass wool with a maximum extension of 2 mm is exemplified by reference number 21 and a fiber ball made of rock wool with a maximum extension of 5 mm is shown by way of example.
  • a binder is added to the first intermediate product in step S2 in order to obtain a second intermediate product.
  • additives can be added in step S2, such as a foaming agent, wood chips, natural fibers and / or synthetic fibers, water, carbon-containing additives, lime, preferably slaked lime, or foam glass granulate.
  • binding agent and possibly one or more additives can be done by pouring the first intermediate product in a desired form and then pouring / wetting the binding agent and possibly one or more additives over it.
  • the first intermediate product, the binder and optionally one or more additives can be mixed and then filled into the desired shape.
  • the second intermediate product is heat-pressed into the desired shape in order to obtain a third intermediate product, which is then cured in step S4 to form the recycled insulating material.
  • curing can be cooling and / or drying. After cooling and / or drying, the recycled insulation material can already be marketed.
  • a curing step can be selected which additionally or alternatively comprises a pyrolysis treatment. Furthermore, the moisture and the mold / fungus resistance of the refined recycled insulation material is increased, or can thus be excluded that the fungus or The organic material required for mold growth is no longer present in the refined recycled insulation material.
  • insulating wool in the form of rock wool can be shredded in order to obtain 65% to 90% fiber balls and 10% to 35% dusts and particles as the first intermediate product in step S1.
  • water glass for example low-sodium water glass, and optionally water glass hardener can be added as a binder to the first intermediate product in order to obtain a second intermediate product, wherein the addition of binder can take place according to one of the two aforementioned options.
  • the addition of binder and, if necessary, of one or more additives can be carried out by pouring the first intermediate product in a desired form and then pouring / wetting the binder and, if necessary, one or more additives; on the other hand, the first intermediate product, the binder and optionally one or more additives can be mixed and then filled into the desired shape.
  • an additive can be added in addition to the binder.
  • the addition can take place together with the binder according to the two options mentioned above.
  • a conceivable additive is an inorganic additive, such as foam glass granulate, by means of which the thermal insulation and pressure stability of the recycled insulation material can be increased.
  • the second intermediate product can then be heat-pressed in step S3 at a temperature of 50 ° C. to 180 ° C. and a pressure of 0.05 bar to 5 bar (0.05 kg / cm 2 to 5 kg / cm 2 ) to obtain the third intermediate.
  • the temperature is preferably in step S3 between 80 ° C and 180 ° C to increase the water resistance of the material and shorten the cycle time of the process. In this way, for example, a recycled insulation material in the form of a plate with a thickness of 2 mm to 15 mm or more can be obtained.
  • step S4 in which the third intermediate product can be hardened by means of cooling, a weather-resistant recycled insulation material can be produced which is suitable for outdoor use.
  • the recycled insulation material cured by means of pyrolysis treatment also being referred to as refined recycled insulation material.
  • the refinement can lead to a very high-quality mineral fiber-based recycled insulation material, which has very good fire resistance, F30, F60 (fire resistance classes according to DIN 4102-2) and can be used, for example, to insulate windows, doors or walls. In this way, a recycled insulation material in the form of a plate with a thickness of 2 mm to 15 mm or more can be obtained.
  • glass wool can be used as the insulating wool to be shredded in step S1 as the starting material.
  • the first intermediate product can comprise 65% to 90% fiber balls as well as 10% to 35% dusts and particles that were obtained from the shredding of insulating wool.
  • the binder to be added in step S2 can be an organic one, such as an organic powder, an organic resin or a renewable raw material such as starch, lignin or sugar such as dextrose, maltrose, glucose, etc.
  • Possible binders can be in the form of powdery substances and mixed to form the first intermediate product, as a result of which they adhere to the fibers. Alternatively, the binders can also be used as liquid solutions.
  • the addition of binder to the first intermediate product can, as described above, take place in two different ways. On the one hand, the addition of binding agent and possibly one or more additives can be done by pouring the first intermediate product in a desired form and then pouring / wetting the binding agent and possibly one or more additives over it. On the other hand, the first intermediate product, the binder and optionally one or more additives can be mixed and then filled into the desired shape.
  • this first intermediate product can be mixed with additional additives, such as, for example, a carbon-containing additive, a renewable raw material such as starch, lignin, sugar, if these are not already present in the binder.
  • additional additives such as, for example, a carbon-containing additive, a renewable raw material such as starch, lignin, sugar, if these are not already present in the binder.
  • Carbon-containing additives can also be fillers and extenders such as sawdust, straw or other inexpensive, renewable or artificial raw materials.
  • the second intermediate product comprising the binding agent and possibly the one or more additives can then be heat-pressed to form a third intermediate product in step S3 and then cooled to form the recycled insulation material in step S4.
  • the recycled insulation material obtained in this way can already be used as insulation if no increased fire exposure is required.
  • the recycled insulation material it is possible to further refine the recycled insulation material by coking it in the absence of oxygen. This can be done in a furnace at temperatures between 600 ° C and 900 ° C.
  • the carbon can fuse with the fibers and create one Form fiber-reinforced carbon foam. If a foaming agent, for example aluminum powder, was added in step S2 so that it is included in the second intermediate product, the hydrogen gas-filled gas bubbles formed thereby promote a foam structure, which creates a closed-cell carbon foam, with the hydrogen gas being released from the within a very short time Diffused out inside the carbon foam.
  • a foaming agent for example aluminum powder
  • step S1 An overview of a combination of insulating wool, which is shredded in step S1, depending on its type, the selected binder, the consistency of the second intermediate product and possible parameters of the process, is compiled in the following table. Furthermore, the table shows a possible use of the recycled insulation material, in which the curing in step S4 can only take place by means of cooling, that is to say without pyrolysis treatment, and a refinement that can be achieved by means of the pyrolysis treatment.
  • the types of insulation wool to be shredded shown in the table are type 1: production waste from the manufacture of insulation wool and / or construction site scraps of new insulation wool; Type 2: old wool with RAL quality mark; and Type 3: Harmful old wool without a RAL quality mark before 1998.
  • the abbreviation “o / u” used stands for “or / and”.
  • a flame-resistant wood-based material that is described below and is regarded as independently capable of protection can also be added in step S2.
  • the fire-resistant wood-based material comprises a wooden strip, which has a thickness of 1 mm to 10 mm, a width of 1 mm to 50 mm and a length of 500 mm to 4,000 mm and is optionally pricked, insulating wool fibers and a binding agent, which is optionally the spiked design has penetrated the wood strips and with which the wood strips are impregnated, the binding agent being selected from one or more of inorganic water glass, inorganic water glass specifications, organic resins such as urea, melamine or phenol, fire-retardant additives such as precipitants or acids or Acid hardener.
  • the wooden strips are preferably split and / and preferably have an uneven surface.
  • the fire-resistant wood-based material made from waste wood, damaged spruce or poplar-like wood is preferred, any wood being possible in principle, as well as willow or birch, for example also as damaged wood and windbreak wood.
  • Processing into strips of wood can be done using Be done.
  • the wood strips present as split ends can be dried and impregnated with the preferably fire-retardant binder. After the binder has dried, the wooden strips can be used.
  • Precipitants, acids or acid hardeners, for example, are fire retardant.
  • step S2 The following describes the addition of the fire-resistant wood-based material to a fiber pulp in step S2, with stone wool as insulating wool and an inorganic binder being preferred.
  • stone wool as insulating wool and an inorganic binder being preferred.
  • a homogeneous and full-volume fiber body composite can be produced, without defects or gaps and / or gaps, which comprises the fiber pulp and the fire-resistant wood material.
  • the flame-resistant wood-based material can be introduced into molds, for example systematically arranged in the longitudinal direction, an arrangement in different orientations of the flame-resistant wood-based material is also possible, for example to increase transverse tensile and longitudinal tensile strengths. Diagonal insertion is also possible for improved static properties.
  • the flame-resistant wood-based material can be inserted in layers, with the fiber pulp being poured over each layer.
  • a layer thickness can be 0.1 mm to 2 mm.
  • a certain excess can be used here in order to close all gaps between the wood-based material, i.e. the wood strips.
  • Another special feature is the shape of the press templates or press models (e.g. approx. 20 cm - 60 cm wide, approx. 20 cm - 60 cm high and 300 cm - 1200 cm long) these are provided with outlet openings (e.g. bores (6mm to 15 mm) so that the excess fiber - binder pulp can escape.
  • outlet openings e.g. bores (6mm to 15 mm
  • the templates can be closed and pressed under high pressure, for example 2 bar to 8 bar, that is 2 kg / cm 2 to 8 kg / cm 2 , at a temperature of 80 ° to 180 °.
  • the templates can be designed so that one side and an upper ram are designed to slide. As a result, the pressed material can experience a relatively linear pressure from above and from one side, which leads to an optimized and homogeneous compression in the finished material, i.e. the recycled insulation material.
  • the hardening can be done by cooling.
  • a fire resistance class of at least B1, possibly A2, (according to EN 13501-1 and DIN 4102-1) Classifiable wood-based recycled insulation material is created.
  • the pulp can be advantageous for the process for producing the recycled insulation material. All gaps and cavities can be filled, which means that capillary action in the material can be avoided.
  • the pulp can harden completely and fill all cavities. Excess can escape through pressure valves built into the press template.
  • the hardened fiber pulp can replace a conventional glue line. Because of its internal stability due to fibers, however, it can be considerably thicker than conventional glue joints without losing its binding capacity or load-bearing capacity.
  • a new and visually appealing image of a recycled insulating wool wood-based material can be created. This can be classified in the fire resistance class B1, possibly A2, (according to EN 13501-1 and DIN 4102-1).
  • FIG. 3 shows a schematic representation of a device for processing insulation materials, such as mineral insulation wool.
  • the device generally designated 30, comprises a drum 32, a tool group 34 which is arranged on a lower region of the drum 32, a drive (not shown) which drives the drum 32 and the tool group 34 to rotate relative to one another, a drum 32 enclosing it Housing 36, a suction device (not shown) and an adjusting element 38.
  • the tool group 34 is arranged on a disk 40 and the disk 40 rotates relative to the drum, as indicated by arrow 41.
  • the drum 32 is driven by the drive and the tool group 34 stands still.
  • material located in the drum 32 can follow a defined material flow 39, which can run centrally in the drum 32.
  • material located in the drum is guided to an inner wall of the drum 32 and the tool group 34. This can be achieved even more advantageously if the material flow 39 is an elliptical material flow 39.
  • An outer wall of the drum 32 can have an opening 42 which, in the present case, is only indicated schematically in the jacket surface of the drum 32.
  • the opening 42 is set up so that material located in the drum 32 can move through it in order to be able to get into a space 44 between an outer side of the drum 32 and an inner side of the housing 36.
  • there can be three opening states of the opening 42 which can correspond to the three fractions which arise when insulating wool is comminuted.
  • a first opening surface can have the shape of a sieve, through which only dust and particles can pass, a second opening surface first Have recesses which are larger than the perforations of the screen in order to allow individual fibers and small fiber bundles to pass through, and a third opening area have second recesses which are larger than the first recesses so that fiber balls can pass through.
  • the adjusting element 38 can be used to vary the opening area of the opening 42, so that at least two opening areas that differ from one another are present depending on the position of the adjusting element.
  • the adjusting element 38 is a cylinder 38 which lies close to the outside of the drum 32 and has various perforations, such as slots, grids, elongated holes, which can be used as screens, first and second recesses. According to the positioning of the tightly fitting cylinder 38 relative to the opening 42 of the drum 32, the opening 42 can coincide with one of the perforations in the tightly fitting cylinder 38.
  • the drum 32 has a plurality of openings 42 and the tightly fitting cylinder 38 has a corresponding number of perforations.
  • a sheet metal material is, for example, a possible material for the production of the tightly fitting cylinder 38, since it can be easily adapted to the shape of the drum 32.
  • the drum 32 can also have openings with various perforations, such as slots, grids, elongated holes, which can serve as a sieve, first and second recesses, and these can be opened or closed by the adjusting element 38 as required.
  • Material which leaves the drum via the openings 42 can enter the intermediate space 44.
  • a distance between the outside of the drum and the inside of the housing is between 50 mm and 100 mm.
  • a filter, a sieve and / or an air sifter can be connected to the suction device in order to be able to better fractionate the material into the appropriate fractions for further processing.
  • a possible tool group 34 as it can be used in the device 30 shown in FIG. 3, is shown in FIG. This preferably comprises two cutting tools 46, the cutting edges of which are aligned in the direction of rotation.
  • the tool group 34 is arranged in FIG. 4 by way of example on a disk 40, which can rotate relative to the drum 32, as indicated by arrow 41.
  • FIGS. 5a, 5b and 5c Another possible tool group 34, as it can be used in the device 30 shown in FIG. 3, is shown in FIGS. 5a, 5b and 5c in a front view, side view and top view.
  • This can include at least one spherical mallet 50, a base 52 and a shaft 54 connecting the spherical mallet 50 and the base 52.
  • the spherical mallet 50 can have recesses 56 which, according to the representations in FIGS. 5a and 5b, can be designed in a hemispherical shape or in another shape, for example a pyramid shape.
  • the spherical mallet 50 can have a diameter of about 30 mm, for example from 25 mm to 35 mm, in order to ensure effective processing of insulating wool.
  • the shaft 54 can have a length of 50 mm to 150 mm, the length being determined in such a way that, on the one hand, a material jam is avoided and, on the other hand, a stable fastening can be achieved.
  • a For example, welded-on reinforcement 58 can be provided, as can be seen in FIG. 5b.
  • this tool group can be arranged on the disk 40 of the device 30.
  • An example of a fiber-reinforced foam is shown in FIG. In this, the fiber balls 20, which are surrounded by the fiber-reinforced foam, are visible.
  • the fiber-reinforced foam shown has an approximately round shape in cross-section, but can also have any other shape in cross-section, for example a rectangular or triangular shape. It can also be seen in FIG. 6 that the fiber-reinforced foam
  • the device can also have nozzles which are designed to spray a liquid, for example a binding agent or an additive, onto a material located in the drum, for example onto shredded or to be shredded insulating wool.
  • a liquid for example a binding agent or an additive
  • the system can be encapsulated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'une matière isolante de recyclage à partir de laine isolante, qui comprend les étapes suivantes : Déchiqueter de la laine isolante de manière à obtenir un premier produit intermédiaire, lequel comprend (S1) des flocons de fibres (20), ajouter des liants au premier produit intermédiaire de sorte à obtenir (S2) un deuxième produit intermédiaire, presser à chaud le deuxième produit intermédiaire à la forme voulue, de sorte à obtenir (S3) un troisième produit intermédiaire et durcir le troisième produit intermédiaire en une matière isolante recyclée (S4). La présente invention concerne également un procédé de recyclage de laine isolante, un dispositif (30) destiné à traiter de la laine isolante et une mousse renforcée par fibres. L'invention concerne en outre un matériau dérivé du bois résistant au feu ainsi qu'un procédé pour le fabriquer.
EP20760799.5A 2019-08-20 2020-08-20 Procédé de recyclage de laine isolante, dispositif pour traiter de la laine isolante, mousse renforcée par fibres, matériau dérivé du bois résistant au feu et procédé de fabrication d'un matériau dérivé du bois résistant au feu Pending EP4017655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019212441.0A DE102019212441A1 (de) 2019-08-20 2019-08-20 Verfahren zum Recyceln von Dämmwolle, Vorrichtung zum Aufarbeiten von Dämmwolle, Faserverstärkter Schaum, Brennwiderstandsfähiger Holzwerkstoff sowie Verfahren zum Herstellen eines brennwiderstandsfähigen Holzwerkstoffs
PCT/EP2020/073277 WO2021032814A1 (fr) 2019-08-20 2020-08-20 Procédé de recyclage de laine isolante, dispositif pour traiter de la laine isolante, mousse renforcée par fibres, matériau dérivé du bois résistant au feu et procédé de fabrication d'un matériau dérivé du bois résistant au feu

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EP4017655A1 true EP4017655A1 (fr) 2022-06-29

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US (1) US20220307171A1 (fr)
EP (1) EP4017655A1 (fr)
CN (1) CN114938637A (fr)
DE (1) DE102019212441A1 (fr)
WO (1) WO2021032814A1 (fr)

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DE102021125066A1 (de) 2021-09-28 2023-03-30 Brandschutz Komponenten & Recycling Zentrum GmbH Verfahren und vorrichtung zum aufbereiten von partikelhaltigen fluiden
DE102022130877A1 (de) 2022-09-29 2024-04-04 3 R RE:CYCON GmbH Verfahren zum Herstellen eines Formkörpers
EP4427855A1 (fr) * 2023-03-10 2024-09-11 Saint-Gobain Ecophon AB Procédé de fabrication d'un élément en matériau fibreux et système de mise en oeuvre du procédé

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US20220307171A1 (en) 2022-09-29

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