EP3788015A1 - Dispositif pour la production d'un granulat minéral soufflé - Google Patents

Dispositif pour la production d'un granulat minéral soufflé

Info

Publication number
EP3788015A1
EP3788015A1 EP19724333.0A EP19724333A EP3788015A1 EP 3788015 A1 EP3788015 A1 EP 3788015A1 EP 19724333 A EP19724333 A EP 19724333A EP 3788015 A1 EP3788015 A1 EP 3788015A1
Authority
EP
European Patent Office
Prior art keywords
processing channel
channel
laminar flow
flow
section
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
EP19724333.0A
Other languages
German (de)
English (en)
Inventor
Johannes POHL
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3788015A1 publication Critical patent/EP3788015A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/109—Glass-melting furnaces specially adapted for making beads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/10—Clay
    • C04B14/12—Expanded clay
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/04—Heat treatment
    • C04B20/06—Expanding clay, perlite, vermiculite or like granular materials
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/04—Heat treatment
    • C04B20/06—Expanding clay, perlite, vermiculite or like granular materials
    • C04B20/066—Expanding clay, perlite, vermiculite or like granular materials in shaft or vertical furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D2001/0046—Means to facilitate repair or replacement or prevent quick wearing
    • F27D2001/005—Removable part or structure with replaceable elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0001—Positioning the charge
    • F27D2003/0006—Particulate materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • F27D2003/185—Conveying particles in a conduct using a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens or the like for the charge within the furnace
    • F27D2005/0081—Details
    • F27D2005/0087—Means to prevent the adherence of the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2001/00—Composition, conformation or state of the charge
    • F27M2001/03—Charges containing minerals

Definitions

  • the invention relates to an apparatus for producing a distended mineral granules with a heated processing channel for the one
  • Processing channel heated to a critical temperature and thus expanded, after which the blown granules by the delivery flow from the
  • Processing channel is conveyed away.
  • a disadvantage is that the heated material has a softened and adhesive surface and therefore can adhere to the inner wall of the processing channel.
  • the manufacturing process has to be interrupted on a regular basis in order to be able to carry out maintenance and cleaning work on the processing channel inner wall, since otherwise the effective heating power of the device would be subject to permanent fluctuation due to the adhesive layer forming and acting as an insulator. This effect is due to flow turbulence in the
  • Processing channel such as those caused by internals, reinforced and can lead to a complete closure of the processing channel.
  • the invention is therefore based on the object, a device of the type described in such a way that thus a continuous, qualitatively controllable manufacturing process is achieved.
  • the invention achieves the stated object by providing an inflow opening in the processing channel for forming a granulate-free laminar flow running along the processing channel inner wall.
  • the process medium which is introduced into the processing channel to form the laminar flow, can in principle have different gas compositions, with air being selected as the process medium in the simplest case.
  • the inflow opening can be formed in a variety of ways. For example, it can be provided that a supply line leading the process medium opens into the processing channel in such a way that the opening inflow opening axis runs parallel to the conveying flow direction, wherein in principle several inflow openings can also be provided. Especially cheap
  • Inlet opening is provided.
  • the inflow opening basically constitutes a disruptive interruption of the processing channel, any flow turbulences caused by the process medium entry according to the invention can be reduced to a negligible level via the inflow opening.
  • the device according to the invention can be used with regard to the flow directions of laminar flow and delivery flow both in countercurrent and in flow
  • Cross-sectional geometry of the processing channel can be chosen freely, favorable process conditions arise in a circular elected
  • Processing channel protrude, but may, for example, in a region radially outside the preceding channel in the conveying direction channel section in the processing channel.
  • the processing channel can be interchangeable arranged in a furnace shaft. According to these measures, the processing channel can be removed for cleaning purposes from the furnace shaft and then reused or replaced if damaged or after reaching the service life. In addition, this allows a modular construction of the device, so that over only minor modifications to the device itself, either an operation in both the countercurrent process as well as in the
  • the processing channel comprises two channel sections with diverging cross-sections, wherein the channel section with a smaller cross-section protrudes to form the inflow opening into the channel section with a larger cross-section.
  • the channel sections may each be aligned with respect to their longitudinal axis coaxially to each other and parallel to the flow direction, wherein the channel section may be enclosed with a smaller cross-section of the channel section with a larger cross section, that is a completely around the protruding portion of the smaller channel section inlet opening without additional required
  • Channel section protrudes with a smaller cross-section in the channel section with a larger cross-section. As a result, the formation of the laminar flow is further promoted. To an adhesion of the mineral granules through which to the
  • the process medium of the laminar flow can from the
  • Process medium of the delivery flow have different viscosity. Characterized in that the laminar flow and the delivery flow a different
  • the viscosity can be over
  • Process parameters such as temperature or flow rate of the process media of laminar or delivery flow can be adjusted.
  • the viscosity of the process medium of the laminar flow can be set in a favorable manner if heating elements for the processing channel are arranged in a feed line region surrounding the processing channel for the laminar flow.
  • the process fluid forming the laminar flow is passed through the supply area before being directed via the inflow opening into the processing channel.
  • the heat input via the heating elements can be adjusted into the process medium and consequently its viscosity.
  • a particular advantage lies in the fact that the heating elements only need to provide a temperature profile required for the isenthalpic expansion process of the mineral granules and thus the process medium for the laminar flow does not require a separate heating device or a separate temperature profile in order to adjust the viscosity of the process medium.
  • FIG. 1 is a schematic section of a device according to the invention with head-side material entry and fuß concentrated material discharge at
  • Fig. 2 is a representation corresponding to FIG. 1 of an inventive
  • a device according to the invention has a processing channel 1.
  • the processing channel 1 is in a heat insulation jacket. 2
  • Processing channel inner wall extending, granular laminar flow 5 is provided.
  • volcanic glass is based on a supply device 6, which is assigned in the embodiment of Fig. 1 adjoining the processing channel 1 head part 7.
  • the discharge of the mineral granulate takes place via a deduction area 9 assigned to a foot part 8, wherein the withdrawal can be assisted by the supply of additional cooling air 10.
  • the laminar flow 5 is supplied via provided in the furnace shaft 3 feed ports 1 1 the processing channel 1, wherein the head part 7 also has a
  • the laminar flow 5 forms a type of air curtain, which does not mix with the granulate-conveying flow 13 and thereby adhesions of the softened granules to the
  • Processing channel inner wall are largely avoided.
  • Laminar flow 5 can also be preheated, so that adjusts an additional-acting chimney effect, the rising and applying the
  • Laminar flow 5 to the processing channel inner wall favors further.
  • the embodiment of a device according to the invention shown in FIG. 1 is particularly suitable for particle sizes above 100 gm, especially as in this case results in a promotion of the granular particles through the processing channel 1 by gravity.
  • the laminar flow 5 and the granulate-conveying flow 13 extend in the processing channel 1 in opposite directions of flow.
  • the residence time of the particles in the processing channel 1 can be adjusted, for example, via the inflow velocity of the laminar flow 5 or an additionally provided suction in the take-off region 12.
  • Fig. 2 is particularly suitable for
  • the laminar flow 5 and the granulate-conveying flow 8 have the same flow direction in the processing channel 1.
  • the granulate particles are introduced into the processing channel 1 via a feed device 6 assigned to the foot part 8 by means of injected process air 14 as process medium.
  • the residence time of the particles in the processing channel 1 can in turn on the
  • Discharge region 12 provided suction can be adjusted.
  • additional cooling air 15 can be entered into the head part 7.
  • deviating cross-section comprises, wherein the channel portion 16 projects with a smaller cross section to form the inflow opening 4 in the channel section 17 with a larger cross-section.
  • the channel sections 16 and 17 may each have a circular cross-section and be aligned coaxially relative to each other with respect to their longitudinal axis, wherein the channel section 16 is partially pushed into the channel section 17.
  • Processing channel 1 or the channel sections 16 and 17 can be chosen freely, with particularly favorable process conditions set circular cross-section. It may also be provided according to an embodiment that the processing channel 1 or the channel sections 16 and 17 are formed by a suitable, heat-resistant film.
  • Heat exchanger is supplied, so that the process heat in turn to a laminar flow 5 forming, newly supplied process air 18 can be dispensed.
  • the processing channel 1 can be interchangeably arranged in the furnace shaft 3, so that, for example, the channel sections 16 and 17 can be removed individually or jointly from the furnace shaft 3 to perform possibly necessary maintenance easier or the
  • Processing channel 1 and the channel sections 16 and 17 to be able to exchange.
  • the head part 7 and the foot part 8 can be replaceably attached to the processing channel 1 and / or the furnace shaft 3, so that a modular structure of the device is made possible, depending on
  • Application can be customized. As a result, over only minor remodeling or by simply replacing the head part 7 with the foot part 8, for example between a countercurrent process according to FIG. 1 and a DC process according to FIG. 2 or between a process with
  • the device may surround a processing channel 1
  • Supply line 19 for the laminar flow 5 have. In the supply line 19 while heating elements 20 may be arranged for the processing channel 1, which then simultaneously serve to heat the laminar flow 5.
  • Inflow velocity of the laminar flow 5 forming process air 18 are set in the supply line 19.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

L'invention concerne un dispositif pour la production d'un granulat minéral soufflé avec un canal de traitement chauffé (1) pour le granulat minéral amené à un flux de transport (13). Afin de concevoir un dispositif du type décrit ci-dessus de manière à obtenir un processus de production continu et qualitativement contrôlable, selon l'invention, une ouverture d'entrée (4) est prévue dans le canal de traitement (1) pour former un flux laminaire sans granulat (5) le long de la paroi interne du canal de traitement.
EP19724333.0A 2018-05-02 2019-04-29 Dispositif pour la production d'un granulat minéral soufflé Pending EP3788015A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50367/2018A AT521346B1 (de) 2018-05-02 2018-05-02 Vorrichtung zur Herstellung eines geblähten Mineralgranulats
PCT/AT2019/050016 WO2019210338A1 (fr) 2018-05-02 2019-04-29 Dispositif pour la production d'un granulat minéral soufflé

Publications (1)

Publication Number Publication Date
EP3788015A1 true EP3788015A1 (fr) 2021-03-10

Family

ID=66554074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19724333.0A Pending EP3788015A1 (fr) 2018-05-02 2019-04-29 Dispositif pour la production d'un granulat minéral soufflé

Country Status (4)

Country Link
US (1) US12013184B2 (fr)
EP (1) EP3788015A1 (fr)
AT (1) AT521346B1 (fr)
WO (1) WO2019210338A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL4107458T3 (pl) 2020-08-21 2024-03-25 Omya International Ag Urządzenie do wytwarzania ekspandowanego granulatu

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431884A (en) * 1943-08-31 1947-12-02 Neuschotz Robert Method of expanding pearlite
FR1420639A (fr) 1963-11-23 1965-12-10 Portland Cementfabrik Germania Procédé pour la fabrication d'un produit gonflé à base d'argile et de matières siliceuses
FR2268227A1 (en) * 1974-04-22 1975-11-14 Alary Maurice Flame stabiliser for central heating burner - has conical air inlet meshes forming laminar air flow
US4347155A (en) * 1976-12-27 1982-08-31 Manville Service Corporation Energy efficient perlite expansion process
DE3151164C2 (de) * 1981-12-23 1985-02-07 Deutsche Perlite Gmbh, 4600 Dortmund Vorrichtung zum Blähen von Perlit, Vermiculit und ähnlichem Blähgut
WO1992006051A1 (fr) * 1990-10-02 1992-04-16 Proizvodstvennoe Obiedinenie 'kovdorsljuda' Procede et dispositif de gonflement de matiere granulaire
US20070275335A1 (en) * 2006-05-25 2007-11-29 Giang Biscan Furnace for heating particles
AT12878U1 (de) 2011-10-10 2013-01-15 Binder Co Ag Verfahren zum geschlossenzelligen blähen von mineralischen material
EP2708517B1 (fr) 2012-09-13 2017-06-28 Binder + Co Aktiengesellschaft Procédé de fabrication de verre expansé
EP2876398A1 (fr) * 2013-11-25 2015-05-27 Binder + Co Aktiengesellschaft Dispositif et procédé de fabrication de granulés gonflés
AT15001U1 (de) * 2015-06-03 2016-10-15 Binder + Co Ag Verfahren und vorrichtung zur herstellung eines geblähten granulats
AT525539B1 (de) * 2022-04-19 2023-05-15 Ape Man Gmbh Verfahren zur herstellung mikroholkugel ähnlicher strukturen

Also Published As

Publication number Publication date
US20210396471A1 (en) 2021-12-23
WO2019210338A1 (fr) 2019-11-07
US12013184B2 (en) 2024-06-18
AT521346B1 (de) 2020-01-15
AT521346A4 (de) 2020-01-15

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