EP0218864A2 - Dispositif et procédé pour la fabrication continue d'une masse à prise hydraulique - Google Patents

Dispositif et procédé pour la fabrication continue d'une masse à prise hydraulique Download PDF

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Publication number
EP0218864A2
EP0218864A2 EP86111814A EP86111814A EP0218864A2 EP 0218864 A2 EP0218864 A2 EP 0218864A2 EP 86111814 A EP86111814 A EP 86111814A EP 86111814 A EP86111814 A EP 86111814A EP 0218864 A2 EP0218864 A2 EP 0218864A2
Authority
EP
European Patent Office
Prior art keywords
shaft
fiber
housing
mixing
downstream
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.)
Granted
Application number
EP86111814A
Other languages
German (de)
English (en)
Other versions
EP0218864A3 (en
EP0218864B1 (fr
Inventor
Adolf Prof. Dr.-Ing. Meyer
Helmut Dipl.-Geol. Dr. Rer. Nat. Steinegger
Wolfgang Dipl.-Ing. Schröder
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.)
Heidelberg Materials AG
Original Assignee
Heidelberger Zement AG
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 Heidelberger Zement AG filed Critical Heidelberger Zement AG
Priority to AT86111814T priority Critical patent/ATE54597T1/de
Publication of EP0218864A2 publication Critical patent/EP0218864A2/fr
Publication of EP0218864A3 publication Critical patent/EP0218864A3/de
Application granted granted Critical
Publication of EP0218864B1 publication Critical patent/EP0218864B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2123—Shafts with both stirring means and feeding or discharging means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/62—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis comprising liquid feeding, e.g. spraying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/707—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms the paddles co-operating, e.g. intermeshing, with elements on the receptacle wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/1238—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • B28C5/1292—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices with rotating stirring and feeding or discharging means fixed on the same axis, e.g. in an inclined container fed at its lower part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
    • B28C5/404—Pre-treatment of fibres
    • B28C5/406—Pre-treatment of fibres and mixing with binding material

Definitions

  • the invention relates to an apparatus and a method for the continuous provision of hydraulically setting compound, in particular wet mortar or dry mortar, preferably with a proportion of fibers.
  • a preferred field of application is the production of fiber concrete, in particular glass fiber concrete, but also concrete containing steel fibers, plastic fibers, etc.
  • the object of the invention is to provide a structurally inexpensive, compact and user-friendly device and a method with which a hydraulically setting compound, in particular wet mortar or dry mortar, can be continuously provided in a consistency which is excellently suitable for the incorporation of fibers, and in particular a continuous one Allow the production of fiber concrete with good material utilization and consistently reproducible, constant composition and consistency.
  • a hydraulically setting compound in particular wet mortar or dry mortar
  • the invention enables the production of fiber concrete in a continuous mixing process.
  • fiber concrete of constant, but widely variable composition is provided in a constant flow of material without the material losses associated with a spraying process occurring.
  • the type, length and amount of fiber can be varied within wide limits.
  • the fibers are carefully incorporated into the mortar by the mixing process, and due to the provision in a continuous stream of material, which preferably only passes through the device according to the invention, there is no risk of damaging or destroying the fibers by mixing for too long.
  • the device has a housing which has a loading point and a discharge opening.
  • a driven rotating shaft is accommodated in the housing, which causes a conveying flow through the housing.
  • the shaft is arranged one behind the other in the conveying direction arranged tools for dosing, mixing, crushing and, if necessary, for installing fibers.
  • the construction of the device is simple and compact, and the settings to be made are simple, so that they can also be made by unskilled personnel.
  • the output of the device can be regulated by changing the speed of the shaft.
  • the device can also be operated at a constant speed. A change in the output can then possibly be brought about by exchanging the metering shaft.
  • the housing is substantially cylindrical and possibly conical in places, and the shaft is accommodated in the center and axially in the housing and is preferably mounted twice.
  • the housing can be divided into sections, which can preferably be connected with a quick-release fastener. The device can thus be disassembled into handy and easily transportable segments and quickly assembled and disassembled, which in particular makes cleaning easier.
  • a storage container can be provided at the loading point of the device, for example in the form of a top box or silo connection. This means that both sack loading and silo loading of the device can take place, with minimal conversion work.
  • a dosing screw which sits on a section of the shaft inside the storage container, is preferably used to discharge the material from the storage container. In this way, a precisely predeterminable dry substance dosage is obtained in a structurally uncomplicated manner.
  • the housing can have a preferably central cross-sectional constriction in the outlet area of the storage container, through which the shaft with the metering screw protrudes.
  • This narrowing of the cross section results in a material jam on the outlet side of the storage container, which facilitates keeping the metering rate constant.
  • the narrowing of the cross section flawlessly separates a drying zone of the device, to which the storage container belongs, from a wet zone which may follow downstream.
  • water does not penetrate into the reservoir. This is extremely important because in practice there is always the need to interrupt the production of the fiber concrete at short notice.
  • Shutdowns of a certain duration e.g. B. 10 to 15 minutes are possible with the device according to the invention without special measures; it then starts up again promptly and without any problems.
  • a mixing zone Downstream of the metering zone of the device according to the invention is a mixing zone in which the shaft carries mixing blades projecting radially therefrom, at least some of which can be set at an angle to the conveying direction. Together with the mixing, these mixing blades cause the mass to be transported forward.
  • They can be equipped with wipers bearing against the inner tube wall and / or the end face of the cross-sectional constriction, which in a preferred embodiment extend in the axial direction and are attached to the tips of a pair of mixing blades. These scrapers intensify the mixing and ensure that the mixing zone extends right up to the inner wall of the pipe. The latter is constantly scraped free, which is accompanied by a bearing of the shaft.
  • Working wipers on the cross Narrowed section of the housing keeps this area free of wet mass, so that the period is extended over which the device can be left switched off without problems.
  • the housing can have a peripheral water connection, preferably with at least a slightly current-repellent spray direction.
  • mortar can be mixed with the device according to the invention, as is necessary for the production of fiber concrete.
  • the water is kept away from the metering zone and storage container, so that the possible switch-off time of the device is in turn extended.
  • the device according to the invention does not necessarily have to work with the addition of water; it can also be used to prepare a hydraulically setting dry mass, preferably with a fiber component.
  • the shaft Downstream of the mixing zone there is a fine grinding zone, which, however, can also be omitted if necessary.
  • the shaft carries at least one comb which engages with at least one further comb which is arranged in a housing-fixed manner according to the key-lock principle.
  • the combs can extend in the axial direction and have essentially radially directed pins. It is recommended to use a plurality of combs which are preferably offset in the circumferential direction at the same angular distance. With the latter one achieves a homogenization and pasty adjustment of the mass, which as a result is very fluid and practically free of lumps and is excellently suited for the installation of fibers. It is not absolutely necessary to add relatively complex additives required, but it can of course be done if necessary, for example by feeding in together with the mixing water.
  • a fiber input point with a chute opening into the housing can be located downstream of the fine comminution zone.
  • the shaft carries a spiral axial screw and optionally further fiber installation tools, for example in the form of pins which protrude radially from the shaft, preferably in the circumferential direction counter to the direction of rotation of the shaft. The latter result in an even, gentle installation of the fibers.
  • Sensitive fibers can also be used in this way, which would be destroyed by the previous intensive work-up of the hydraulically setting mass. Working in a continuous flow of material limits the dwell time of the fibers in the area of the conveyor line and fiber installation pins in a well-defined manner, so that damage or destruction of fibers by the mixing in is effectively prevented.
  • the fibers can come from a cutting unit, which is arranged upstream of the chute and should be adjustable with regard to the quantity and length of fibers fed.
  • the composition of the mass obtained can be easily regulated on the basis of the operating parameters of such a cutting unit.
  • the housing of the device can taper conically downstream from the chute towards the discharge opening and can contain a correspondingly conically tapering screw section on the shaft. In this conical end part of the housing, the fiber concrete is gently mixed.
  • the device according to the invention has a control unit that starts the shaft with a lead in terms of fiber addition when it is started and stops with a lag in terms of fiber addition when it is switched off.
  • Two selectable pre-air periods of the shaft can be provided, one of which is intended for start-up after the device has been dismantled and the shorter one for starting up after a short break in work. In the latter case there is still mass in the housing and it is only necessary to prevent excess fibers in the mixture for a short time when starting up. After an extended interruption, disassembly and cleaning of the device, on the other hand, the housing is empty when starting, and the running time of the mass from the storage container to the fiber addition point is taken into account.
  • composition of the mass remains the same even after it has been switched off, and fiber material is saved, which is normally the most expensive component.
  • the device according to the invention can be provided with a safety circuit which monitors the water pressure and / or suitable operating parameters of a fiber cutting unit and switches off in the event of a malfunction.
  • the device shown in FIG. 1 has a housing with a substantially circular cylindrical tube 10 coming horizontally. At one end of the tube is the storage container 12 for dry substance, downstream of which there is a radial water connection 14, further downstream a fiber installation station with a fiber cutting device 16, and finally at the other end of the tube 10, a conically tapering end part 18, which has a discharge opening 20 towards the bottom.
  • the device provides 10 fiber concrete in a continuous flow through the tube when using desiccant, water and fibers.
  • the device is mounted on rollers 22 in the region of the storage container 12 and is supported with a foot 24 against the ground.
  • the fiber cutting mechanism 16 has a separate frame 28, which also runs on rollers 26. This structure enables a change of location to be carried out quickly and easily.
  • the storage container 12 is designed as an attachment box, which can in particular be provided with a sack ripper.
  • a silo connection part can also be used, via which dry matter is fed directly from a silo to the device according to the invention. The conversion between the two variants is easy.
  • a motor 30 is attached to the reservoir 12 in the axial extension of the tube 10. This drives a shaft 32, which runs through the full length of both the reservoir 12 and, in a central, axial arrangement, the tube 10.
  • the shaft 32 carries a number of tools, which are used for dosing dry material from the storage container 12, mixing, grinding, for fiber installation and last but not least for transporting the mass through the pipe 10.
  • FIG. 2 shows schematically how dry substance is discharged from the storage container 12.
  • a section of the shaft 32 running inside the storage container 12 carries a metering screw 34 and individual, radially projecting loosening vanes 35.
  • the shaft 32 is guided through a front-side outlet opening 36 of the storage container 12, which represents the transition to the tube 10.
  • the outlet opening 36 has a circular cross section and has a smaller diameter than the tube 10, with respect to which it is arranged in the center.
  • the cross-sectional constriction is formed by a cylinder sleeve 38, which is arranged coaxially to the tube 10 and protrudes radially inwards and has a length.
  • the dosing screw 34 protrudes into the cylinder sleeve 38 in which it ends.
  • the dosing screw 34 transports dry material from the storage container 12 into the pipe 10 at a well-defined rate.
  • the dosing rate depends on the structural geometry, in particular the size of the outlet opening 36 and the gradient of the dosing screw 34, the chamber volume and the speed of the shaft 32 from which it can be regulated within wide limits.
  • the shaft 22 carries mixing blades 40 projecting radially therefrom, which mix the material located in the tube 10 and, at the same time, transport it through its shape, a suitable angle of attack, etc.
  • a part of the mixing blades is equipped with scrapers 42, 44 made of hard rubber or the like. exist and lie on the inner wall of the tube 10.
  • wipers 42 can be seen, which are attached to the radially outer end of a pair of mixing blades 40 and which extend essentially in the axial direction.
  • the mixing blades carry a flat part 41 serving as a holder, to which the wipers 42 are fastened with screws or rivets 43.
  • a number of such mixing vane groups 40 with wipers 4 are provided, which follow the shaft 32 at a distance from one another in the axial direction (FIG. 1).
  • the mixing blades 40 of the individual groups are angularly offset by 120 ° in the circumferential direction.
  • At the level of each group there are also individual mixing blades 46 without wipers, and also at an angular offset of, for example, 120 °. This geometry is shown schematically in FIG. 3.
  • one of the wipers 44 is located at the axial end of the cylinder bush 38, at which the passage cross section for the material widens to the inside dimension of the tube 10.
  • the scraper 44 lies against both the end face 48 of the cylinder liner 38 and the inner wall of the tube 10. It thus ensures that the step-like transition to the outlet of the storage container 12 is always scraped free of material, which among other things promotes a well-defined separation of the wet zone and dry zone of the device according to the invention.
  • water port 14 of the device in the mixing zone, in its upstream part.
  • the water connection 14 is at some distance from the diameter step at the end of the cylinder liner 38. It is also inclined against the pipe axis, so that a water jet fed in has a spray direction downstream in the conveying direction of the material. All of these measures, in particular the grading of the diameter of the housing of the device and the stripper 44 working there, prevent water from getting into the reservoir 12. This lock is particularly effective when the drive of the shaft is switched off and the flow of the material is interrupted. It is thus possible to interrupt the continuous production of mortar at short notice, for example for 10 to 15 minutes, and then to restart the device without having to take any special measures.
  • the wipers 42, 44 intensify the mixing process and ensure that the mixing zone extends over the full cross section of the tube 10. Furthermore, they also serve to support the shaft 32. As FIG. 1 shows, the shaft 32 is supported twice; a roller bearing 50 is provided as a second bearing on the end face of the conical tube end part 18.
  • a fine comminution zone of the device adjoins the mixing zone downstream.
  • the shaft 32 carries comb-like tools 52 which adjoin the shaft 32 with their comb back, extend essentially in the radial direction and have radially projecting pins.
  • a plurality of combs 52 offset at an angle can be attached at the same axial height, for example three combs 52 at an angular distance of 120 °.
  • the combs 52 rotating with the shaft 32 stand with combs fixed to the housing 54 engaged. The latter come to rest with their comb back on the inner wall of the tube 10, extend essentially in the axial direction, and have radially inwardly directed tines.
  • the engagement of the combs 52, 54 according to the key-lock principle is illustrated in FIG. 6.
  • the mass conveyed through the tube 10 is finely comminuted and homogenized between the combs 52, 54. It is lump-free, pasty and very free-flowing, making it ideally prepared for the installation of fibers.
  • the combs 52, 54 are preferably made of steel wire. However, other materials, in particular plastic and hard rubber, can also be used.
  • the fiber addition point with the fiber cutting unit 16 follows downstream of the fine comminution zone. This is supplied with fiber strands 58, for example glass fiber rovings, which are cut to a predetermined length.
  • the amount of fiber provided per unit of time can be regulated via the retraction speed of the fiber cutting unit 16. After being cut, the fibers enter a chute 56 which is oriented essentially vertically and opens into the tube 10 of the device.
  • the invention is not restricted to the use of glass fibers, in particular alkali-resistant glass fibers.
  • glass fibers in particular alkali-resistant glass fibers.
  • other mineral fibers, plastic fibers, steel fibers, etc. are processed.
  • the material conveyed by the device is taken up downstream of the combs 52, 54 by a spiral axial screw 60 which extends under the chute 56 and through the conical end part 18 up to the dispensing opening 20.
  • the worm 60 sits on the shaft 32 and mix the material and the fibers.
  • the shaft 32 is additionally equipped with pin-shaped fiber installation tools 62. As can be seen in FIG. 1, these pins 62 follow one another axially at a distance. They are further distributed over the circumference of the shaft 32, wherein, for example, three angularly offset pins 62 can be arranged at the same axial height. This is illustrated in Figure 7; the screw 60 is not shown for the sake of clarity.
  • the pins 62 protrude essentially radially from the shaft 32, and they are curved in the circumferential direction, namely counter to the direction of rotation of the shaft 32. With these pins 62, the fibers are carefully and uniformly installed in the material.
  • the conical pipe end part 18 tapers towards the discharge opening 20.
  • the section of the screw 60 contained in this end part 18 tapers accordingly. This shape enables gentle, particularly intensive installation of the fibers.
  • the device according to the invention is segmented.
  • the conical end part 18 is a removable part which is connected to the tube 10 via a quick-release fastener 64.
  • the tube 10 is in turn attached to the reservoir 12 with a corresponding quick-release fastener, not shown. You can easily dismantle the housing of the device for cleaning purposes.
  • the shaft 32 is in one piece at least from the mixing zone to the discharge opening 20.
  • the shaft section in the interior of the storage container 12 can be a separate part on which the shaft 32 can be detachably fixed in a rotationally fixed connection.
  • the device according to the invention can be used with or without the addition of mixing water both for the production of fiber-reinforced hydraulically setting compositions and for other purposes.
  • a first construction variant of the device includes the part that extends from the storage container 12 to just behind the fine comminution tools 52, 54. This unit alone is used for continuous dosing, mixing and fine grinding, alternatively for dry matter or a matrix made with water.
  • the fiber installation part is also connected. The combined unit can also be used as an alternative to mixing dry material with fibers and incorporating fibers into a matrix made with water.
  • a preferred area of application is the production of fiber concrete in a continuous mixing process.
  • Water is preferably added by means of a water pump 66 via a metering unit 68. From this the water reaches the water connection 14 via a line 70, in which a tap 72 and a pressure gauge 74 are located.
  • the device according to the invention has a control unit 76 with a time delay circuit which takes effect when the device is started up and switched off.
  • the metering and mixing shaft 32 starts up with a lead relative to the fiber cutting unit 16.
  • lead times There are two different lead times that can be selected at the push of a button.
  • a longer lead-up period of, for example, approximately 8 seconds is used when the device is started up for the first time, after dismantling and cleaning, etc., ie in an operating state with an empty pipe 10. This takes into account the fact that the dosage of the goods a certain runtime is required from the storage container 12 until the fiber addition point is reached.
  • the shorter lead-in period of the metering and mixing shaft 32 relative to the fiber cutting unit 16 is selected, which can be, for example, approximately one second.
  • the fiber cutting mechanism is always stopped first, while the shaft 32 continues to run for a short time, for example also about a second.
  • the water supply is started at the same time as the metering and mixing shaft 32 starts.
  • a safety circuit is provided which monitors the water pressure and prevents the device from operating when the water pressure is insufficient. Furthermore, the proper functioning of the cutting unit 16 is monitored so that there are no operational disturbances due to the drawing in of uncut fibers.
  • the cutting unit 16 contains a roller, which presses the fiber strands pneumatically controlled against rotating cutting knives. If the pneumatic working pressure is insufficient, the system is switched off.
  • the device according to the invention permits the continuous production of fiber concrete with an adjustable fiber content and predeterminable fiber length in a mixing process which delivers a steady stream of material with a constant and excellently reproducible composition.
  • the material can be placed directly in molds, formwork, etc., for example to produce thin-walled moldings with high stability. Further areas of application are the production of cement-bound pipe coatings, fiber plasters, floor coverings, etc. Finally, building renovation offers a variety of possible uses.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP86111814A 1985-09-13 1986-08-26 Dispositif et procédé pour la fabrication continue d'une masse à prise hydraulique Expired - Lifetime EP0218864B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111814T ATE54597T1 (de) 1985-09-13 1986-08-26 Vorrichtung und verfahren zur kontinuierlichen bereitstellung von hydraulisch abbindender masse.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3532722 1985-09-13
DE19853546501 DE3546501A1 (de) 1985-09-13 1985-09-13 Vorrichtung zur kontinuierlichen bereitstellung von hydraulisch abbindender masse
DE19853532722 DE3532722A1 (de) 1985-09-13 1985-09-13 Vorrichtung und verfahren zur kontinuierlichen bereitstellung von hydraulisch abbindender masse

Publications (3)

Publication Number Publication Date
EP0218864A2 true EP0218864A2 (fr) 1987-04-22
EP0218864A3 EP0218864A3 (en) 1987-08-05
EP0218864B1 EP0218864B1 (fr) 1990-07-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111814A Expired - Lifetime EP0218864B1 (fr) 1985-09-13 1986-08-26 Dispositif et procédé pour la fabrication continue d'une masse à prise hydraulique

Country Status (6)

Country Link
US (1) US4778276A (fr)
EP (1) EP0218864B1 (fr)
JP (1) JPS6262709A (fr)
CA (1) CA1278567C (fr)
DE (2) DE3532722A1 (fr)
ZA (1) ZA866723B (fr)

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EP0584573A1 (fr) * 1992-08-27 1994-03-02 BUG BETRIEBSANLAGEN UND GRUNDBESITZ GmbH Dispositif pour la fabrication de mortier apte à être pompé sur le chantier
BE1009507A3 (nl) * 1995-07-18 1997-04-01 Lomar Nv Werkwijze en inrichting voor het toevoegen van bewapeningsvezels aan hardbare bouwspecies, en produkten hiertoe aangewend.
DE19719812A1 (de) * 1997-05-13 1998-11-19 Wolfgang Rath Verfahren und Vorrichtung zum Aufbereiten von plastischem Mörtel bzw. Beton
DE19911368A1 (de) * 1999-03-15 2000-09-21 Inotec Gmbh Verfahren und Vorrichtung zum Herstellen von Spritzmörtel zur Verwendung im Naßspritzverfahren
DE19542663C2 (de) * 1995-11-16 2003-05-15 Wagner Gmbh J Mischvorrichtung
US10388088B2 (en) * 2016-12-16 2019-08-20 Hyundai Motor Company Roll and brake test system and method of controlling the same

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DE3905535C1 (fr) * 1989-02-23 1990-03-15 Signode System Gmbh, 4220 Dinslaken, De
US5031546A (en) * 1989-02-28 1991-07-16 The Dow Chemical Company Hopper car discharge system
JPH0497804A (ja) * 1990-08-15 1992-03-30 Kato Kensetsu:Kk 固定翼を有するバトルミキサ
FR2671754B1 (fr) * 1991-01-22 1997-07-25 Omniplastic Sa Procede et dispositif de preparation, de transfert et d'application en continu d'une suspension minerale aqueuse fluide de ragreage.
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DE3532722C2 (fr) 1989-09-28
DE3532722A1 (de) 1987-03-26
JPS6262709A (ja) 1987-03-19
ZA866723B (en) 1987-05-27
EP0218864A3 (en) 1987-08-05
EP0218864B1 (fr) 1990-07-18
CA1278567C (fr) 1991-01-02
US4778276A (en) 1988-10-18
DE3546501A1 (de) 1987-04-23
DE3546501C2 (fr) 1988-04-28

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