DE4330551A1 - Process for the environmentally tolerable disposal of mineral fibres and substances containing mineral fibres and their conversion into materials of value - Google Patents

Process for the environmentally tolerable disposal of mineral fibres and substances containing mineral fibres and their conversion into materials of value

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Publication number
DE4330551A1
DE4330551A1 DE19934330551 DE4330551A DE4330551A1 DE 4330551 A1 DE4330551 A1 DE 4330551A1 DE 19934330551 DE19934330551 DE 19934330551 DE 4330551 A DE4330551 A DE 4330551A DE 4330551 A1 DE4330551 A1 DE 4330551A1
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Prior art keywords
materials
asbestos
fibers
fibres
cement
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DE19934330551
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German (de)
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Werner Prof Dr Rammensee
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Priority to DE19934330551 priority Critical patent/DE4330551A1/en
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Classifications

    • 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
    • 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
    • B09B3/0066—Disposal of asbestos
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/16—Waste materials; Refuse from building or ceramic industry
    • C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/246—Cements from oil shales, residues or waste other than slag from waste building materials, e.g. waste asbestos-cement products, demolition 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • 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
    • Y02W30/20—Waste processing or separation
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Technical problem. The disposal of mineral fibres and substances containing mineral fibres, some of which are carcinogenic, in particular asbestos types, is still a great problem. Previous processes (dissolution in acids, fusion into glasses, burning in furnaces) are either highly energy-consuming or produce additional wastes. The end products obtained in all of these processes are in general waste materials which then must for the most part be stored in landfills. (As in, e.g.: DE 4035358 A1, DE 4027844 A1, DE3827157 A1, DE 3718000 A1; PCT/US89/00057 and 0372084, DE 4004201 A1; DE 3931686 A1, DE 4034026 A1). The aim of the invention is therefore a process which converts these mineral fibre materials into valuable materials. The process is moreover to be energy-effective and cost-effective. Solution of the problem. A process is described by which asbestos types and asbestos-containing materials (e.g. sprayed asbestos, asbestos-containing cements) and industrially produced mineral fibres (e.g. rock fibres, basalt fibres, slag fibres, ceramic fibres, glass fibres) and materials which have been produced from these, such as composite materials, felts, mats, insulating materials, can be converted by heating with additives in a tubular rotary furnace into valuable materials such as Portland cement and cement clinker. The process comprises the following part-steps: a) grinding and homogenising the materials to the particle size necessary for cement manufacture, either dry or with the addition... Original abstract incomplete.

Description

Es wird ein Verfahren beschrieben, mit dem Asbeste und asbesthaltige Stoffe (z. B. Spritzasbest, asbesthaltige Zemente) und industriell hergestellte Mineralfaserstoffe (z. B. Gesteinsfasern, Basaltfasern, Schlackenfasern, Keramikfasern, Glasfasern) und Materialien, die aus diesen hergestellt werden, wie z. B. Verbundwerkstoffe, Filze, Matten; Dämmstoffe durch Erhitzen mit Zuschlagstoffen in in einem Drehrohrofen in Wertstoffe, wie Portlandzement und Zementklinker umgewandelt werden können.A process is described using the asbestos and substances containing asbestos (e.g. spray asbestos, asbestos-containing cements) and industrially produced mineral fiber materials (e.g. rock fibers, basalt fibers, slag fibers, ceramic fibers, Glass fibers) and materials made from them, such as. B. composite materials, Felts, mats; Insulation materials by heating with aggregates in a rotary kiln in materials such as Portland cement and cement clinker can be converted.

VerfahrensschritteProcedural steps

  • a) gegebenenfalls Mahlen und Homogenisierung der Stoffe auf die für die Zementherstellung notwendige Korngröße, entweder trocken oder unter Zusatz von Wasser in staubdichten Mühlen.a) optionally grinding and homogenization of the substances on the for cement production necessary grain size, either dry or with the addition of Water in dustproof mills.
  • b) Bestimmung der chemischen Zusammensetzung des Mahlgutes, z. B. durch Röntgenfluoreszenzanalyse (on-line) oder durch ICP/AESb) determination of the chemical composition of the regrind, e.g. B. by X-ray fluorescence analysis (on-line) or by ICP / AES
  • c) Berechnung der notwendigen Zusatzstoffe, um Portlandzemente und Zementklinker herzustellen, entsprechend der erforderlichen Zusammensetzung des gewünschten Zements.c) Calculation of the necessary additives to Portland cement and cement clinker produce, according to the required composition of the desired cement.
  • d) Mischen des mineralfaserhaltigen Mahlgutes mit den Zuschlagstoffen, entsprechend der vorherigen Berechnung, in staubdichten Mühlen.d) Mixing the mineral fiber-containing regrind with the additives, accordingly the previous calculation, in dustproof mills.
  • e) Einbringen des Gemisches in einen Drehrohrofen.e) placing the mixture in a rotary kiln.
  • f) Glühen des Gemisches im Drehrohrofen bei den üblichen Temperaturen und Zeiten für die Zementherstellung.f) annealing the mixture in a rotary kiln at the usual temperatures and Times for cement production.
  • g) Nach Abkühlen des entstandenen Zements kann der erhaltene Werkstoff gemahlen, abgepackt und verkauft werden.g) After the resulting cement has cooled, the material obtained can ground, packaged and sold.

Die Erfindung betrifft die gefahrlose Beseitigung mineralischer Fasern und Faserstoffe, insbesondere von Asbest und Asbestprodukten, und deren Umwandlung in einen Wertstoff, insbesondere in Zement (Portlandzement, Zementklinker).The invention relates to the safe removal of mineral fibers and fibrous materials, especially of asbestos and asbestos products, and their conversion in a valuable substance, especially in cement (Portland cement, cement clinker).

Die Zusammensetzung von Portlandzementen und Zementklinkern ist entsprechend DIN 1164 festgelegt. Haupt- und Spurenelementzusammensetzung mineralischer Fasern und Faserstoffe und von Asbest und Asbestprodukte kann durch Analyse leicht festgelegt werden.The composition of Portland cements and cement clinkers is corresponding DIN 1164 specified. Main and trace element composition of mineral Fibers and fibrous materials and from asbestos and asbestos products can easily determined by analysis.

So bestehen z. B. Serpentinasbeste (Krokydolith, Blauasbest aus wasserhaltigen Mg-Silicaten und Amphibolasbeste (Chrysotil, Weißasbeste) - vereinfacht - aus Ca-, Na-, Fe-, Mg-Silikaten. Glasfasern und Gesteinsfasern bestehen zum großen Teil aus verschiedenen zuammengesetzten Silikatgläsern. Da Zement bzw. Zementklinker aus Mg-, Fe-, Na-haltigen Calcium-Aluminiumsilikaten besteht, sind dessen chemische Bestandteile in den Mineralfasern, zumindest teilweise, schon enthalten.So z. B. Serpentinasbeste (crocidolite, blue asbestos from water-containing Mg silicates and best amphibole (chrysotile, white asbestos) - simplified - from Ca, Na, Fe, Mg silicates. Glass fibers and rock fibers exist for large part of different composite silicate glasses. Because cement or cement clinker consists of calcium, aluminum, magnesium, Fe and Na silicates, are its chemical components in the mineral fibers, at least partially, already included.

Durch geeignetes Mischen der feingemahlenen Faserstoffe mit Rohstoffen, wie sie bei der Zementproduktion verwendet werden, (das sind z. B. Kalkstein, Kreise, Tone und Kalksteinmerkel, Gipsstein oder Anhydrid, Hüttensand oder Traß) kann die Gesamtzusammensetzung des Materials so eingestellt werden, daß es der Zusammensetzung von Zementen nach DIN, oder auch anderen zementähnlichen Wertstoffen entspricht.By appropriately mixing the finely ground fibers with raw materials such as they are used in cement production (e.g. limestone, Circles, clays and limestone markers, gypsum stone or anhydride, slag sand or Trass) the overall composition of the material can be adjusted that it is the composition of cements according to DIN, or other corresponds to cement-like materials.

Die Reaktion lautet dann:
Mineralfasern + Zuschläge - (bei 1250-1450°C) → Portlandzement + WasserThe reaction is then:
Mineral fibers + aggregates - (at 1250-1450 ° C) → Portland cement + water

Die Berechnung der gewünschten chemischen Zusammensetzung kann mit einem Rechnerprogramm erfolgen, das zusätzlich den Kalkstandard (KSt) den Tonerdemodul TM, den Silicatmodul (SM) und den Kalksättigungsgrad (KSG) einbezieht, um die Toleranzen der DIN-Norm für die Portlandzementzusammensetzung einzuhalten.The chemical composition can be calculated using a Computer program take place that additionally the lime standard (KSt) Alumina module TM, the silicate module (SM) and the degree of lime saturation (KSG) includes the tolerances of the DIN standard for Portland cement composition to adhere to.

In zahlreichen Versuchen wurde dies an mehreren mineralischen Faserstoffen, insbesondere Asbestprodukten im Labormaßstab erprobt. (siehe Diplomarbeit unter meiner Anleitung an der Universität zu Köln, Köln 1992).In numerous experiments, this was done on several mineral fibers, especially tested asbestos products on a laboratory scale. (see diploma thesis under my guidance at the University of Cologne, Cologne 1992).

Die Mischung wird gemahlen, homogenisiert und anschließend in einen Drehrohrofen bei Temperaturen zwischen 1250°C und 1450°C gebrannt, wie mit dem Rasterelektronenmikroskop und röntgendiffraktometrisch nachgewiesen werden konnte. Das gebrannte Produkt besteht ausschließlich aus Zementphasen (Alit, Belit, C₃A, C₄AF und Matrix).The mixture is ground, homogenized and then in a rotary kiln fired at temperatures between 1250 ° C and 1450 ° C, as with using a scanning electron microscope and X-ray diffraction could be. The burned product consists exclusively of Cement phases (alite, belite, C₃A, C₄AF and matrix).

Die Versuche haben ergeben, daß nach einer Brennzeit von ca. 30 Min. bei Temperaturen von größer 1250°C mit dem Rasterelektronenmikroskop keine Fasern mehr nachweisbar sind. Dies ist auch aufgrund der Phasengleichgewichte in diesen Systemen anzunehmen, da sowohl Asbeste als auch Glasfasern und anderes Fasermaterial bei diesem Temperaturen nicht mehr thermodynamisch stabil sind, deshalb zersetzt werden oder schmelzen.The tests have shown that after a burning time of approx. 30 min Temperatures of more than 1250 ° C with the scanning electron microscope none Fibers are more detectable. This is also due to the phase equilibria  to be assumed in these systems since both asbestos and glass fibers and other fiber material no longer at this temperature are thermodynamically stable, therefore they decompose or melt.

Untersuchungen der pohysikalischen Eigenschaften der erhaltenen Zemente haben gezeigt, daß diese innerhalb der für Zemente geforderten DIN-Werte liegen.Investigation of the physical properties of the cements obtained have shown that these are within the DIN values required for cements.

Die erhaltenen Zemente können gemahlen und als normale Zemente (z. B. PZ 35, PZ45) in den Handel gebracht werden.The cements obtained can be ground and used as normal cements (e.g. PZ 35, PZ45).

Claims (13)

1. Verfahren zur umweltschonenden Entsorgung von Mineralfasern und mineralfaserhaltigen Stoffen und deren Überführung in Wertstoffe.
Eingeschlossen sind dabei:
  • a) Asbeste und asbesthaltige Stoffe (z. B. Spritzasbest, asbesthaltige Zemente),
  • b) industriell hergestellte Mineralfaserstoffe (z. B. Gesteinsfasern, Basaltfasern, Schlackenfasern, Keramikfasern, Glasfasern) und
  • c) Materialien, die aus den unter a) und b) bezeichneten hergestellt werden können, wie z. B. Verbundwerkstoffe, Filze, Matten, Dämmmaterialien.
1. Process for the environmentally friendly disposal of mineral fibers and substances containing mineral fibers and their conversion into valuable materials.
This includes:
  • a) Asbestos and asbestos-containing substances (e.g. spray asbestos, asbestos-containing cements),
  • (b) industrially produced mineral fibers (e.g. rock fibers, basalt fibers, slag fibers, ceramic fibers, glass fibers) and
  • c) Materials that can be made from those referred to under a) and b), such as. B. composites, felts, mats, insulation materials.
2. Verfahren, nach dem die unter Anspruch 1a) bis c) genannten Materialien einzeln oder gemischt, naß oder trocken in staubdichten Mühlen gemahlen und zur Homogenisierung gemischt werden.2. The method by which the materials mentioned in claim 1a) to c) individually or mixed, wet or dry ground in dustproof mills and mixed for homogenization. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß das homogenisierte Material mit Hilfe der Röntgenfluoreszenzanalyse (oder ICP/OES, oder naßtechnisch) auf seine chemische Zusammensetzung analysiert wird.3. The method according to claim 2, characterized in that the homogenized Material using X-ray fluorescence analysis (or ICP / OES, or wet chemical) is analyzed for its chemical composition. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß aus der chemischen Zusammensetzung dieses Materials die notwendige Zuschlagstoffe für die Wertstoffherstellung, wie z. B. Zementklinker und Portlandzement, rechnerisch bestimmt werden.4. The method according to claim 3, characterized in that from the chemical Composition of this material the necessary aggregates for the production of recyclables, such as. B. cement clinker and Portland cement, can be determined by calculation. 5. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Menge und Art der erforderlichen Zuschlagstoffe für die Herstellung von Wertstoffen, wie Zementklinker bzw. Portlandzement (nach DIN), Dämmmatten, mit einem Computerprogramm automatisch berechnet werden und zwar so, daß die Hauptelementzusammensetzung des Materials innerhalb der Vorschriften (DIN 1 164) für Zementklinker oder Portlandzement liegt.5. The method according to claim 3 or 4, characterized in that the amount and type of aggregates required for the production of valuable materials, such as cement clinker or Portland cement (according to DIN), insulation mats, with a computer program are automatically calculated so that the main elemental composition of the material within the Regulations (DIN 1 164) for cement clinker or Portland cement. 6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß Menge und Art der erforderlichen Zuschlagstoffe entsprechend der Berechnung nach Anspruch 4 oder 5, gegebenenfalls automatisch, zudosiert werden.6. The method according to claim 4 or 5, characterized in that the amount and type of aggregates required according to the calculation according to claim 4 or 5, optionally automatically, are added. 7. Verfahren nach Anspruch 3 bis 6, dadurch gekennzeichnet, daß die Zuschlagstoffe aus Kalkstein, Kreide, Tonen und Kalksteinmerkel, Gipsstein oder Anhydrid, Hüttensand oder Traß bestehen.7. The method according to claim 3 to 6, characterized in that the additives made of limestone, chalk, clay and limestone limestone, gypsum stone or anhydride, slag sand or tress. 8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Zuschlagstoffe mindestens aus einem der in Anspruch 7 genannten Stoffe bestehen. 8. The method according to claim 7, characterized in that the additives consist of at least one of the substances mentioned in claim 7.   9. Verfahren, dadurch gekennzeichnet, daß das in Anspruch 6 erhaltene Gemisch in einen Drehrohrofen eingebracht und bei Temperaturen von 1250°C bis 1450°C gebrannt wird.9. The method, characterized in that the mixture obtained in claim 6 placed in a rotary kiln and at temperatures of 1250 ° C is burned up to 1450 ° C. 10. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Mischung und Homogenisierung und das Brennen im Drehrohrofen von Mineralfasern und mineralfaserhaltigen Stoffe und deren Mischung mit den Zuschlagstoffen bei einem Druck von 0,5 bis 1 bar durchgeführt wird.10. The method according to any one of the preceding claims, characterized in that mixing and homogenization and burning in a rotary kiln of mineral fibers and substances containing mineral fibers and their mixture carried out with the additives at a pressure of 0.5 to 1 bar becomes. 11. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß der nach dem Brennen erhaltene Wertstoff nach dem Erkalten mit Röntgendiffraktometrie oder Rasterelektronenmikroskopie auf Faserfreiheit untersucht wird.11. The method according to claim 9, characterized in that the after Burn obtained material after cooling with X-ray diffractometry or scanning electron microscopy for fiber freedom. 12. Verfahren dadurch gekennzeichnet, daß die nach den vorhergehenden Ansprüchen erhaltenen Produkte nach DIN 4 188 gemahlen werden.12. The method characterized in that according to the preceding claims products obtained are ground according to DIN 4 188. 13. Verfahren dadurch gekennzeichnet, daß die nach den vorhergehenden Ansprüche erhaltenen Wertstoffe zu anderen Werkstoffen, wie Fasern, Dämmmatten, usw. weiterverarbeitet werden.13. The method characterized in that according to the preceding claims obtained valuable materials to other materials, such as fibers, Insulation mats, etc. are processed further.
DE19934330551 1993-09-09 1993-09-09 Process for the environmentally tolerable disposal of mineral fibres and substances containing mineral fibres and their conversion into materials of value Withdrawn DE4330551A1 (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688742A1 (en) * 1994-06-25 1995-12-27 Institut für Baustoff- und Umweltschutz-Technologie IBU-tec Method for treatment of asbestos-cement products and environmentally friendly use thereof
DE19538728C1 (en) * 1995-10-18 1996-09-05 Reinhard Koch Processing hydro-oxidised natural and technically mfd. materials
WO1998002392A1 (en) * 1996-07-15 1998-01-22 Eternit Ag Method for disposing of fibre cement waste products
DE19641583A1 (en) * 1996-09-30 1998-04-09 Rene Kokoschko Hydraulically active mineral phase recovery
WO2005061407A1 (en) * 2003-12-18 2005-07-07 Bernard Blum Method and apparatus for control of kiln feed chemistry in cement clinker production
EP2192095A1 (en) * 2008-12-01 2010-06-02 Eberhard Recycling AG Hydraulically binding mixture and process of manufacture
WO2013055242A3 (en) * 2012-02-06 2013-06-13 Pawlikowski Maciej Method of utilization of asbestos and/or asbestos-containing products
WO2013110810A1 (en) * 2012-01-27 2013-08-01 Cimenteries Cbr Use of organic fibre cement as a raw material in the production of cement clinker
CN105906224A (en) * 2015-02-24 2016-08-31 生态服务环境有限责任公司 Process for inerting residual materials containing asbestos
CN106145883A (en) * 2016-08-10 2016-11-23 卓达新材料科技集团威海股份有限公司 A kind of slag building waste is non-burning brick and preparation method thereof
CZ306605B6 (en) * 2016-01-22 2017-03-22 Výzkumný ústav stavebních hmot, a.s. A method of utilizing asbestos-cement waste

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DE3728787A1 (en) * 1987-08-28 1989-03-09 Heribert Hiendl Process for the disposal of residues formed in asbestos production
DE3914553A1 (en) * 1989-05-03 1990-11-08 Hoelter Heinz Thermal and mechanical treatment of asbestos materials - to avoid health risks
WO1991000123A1 (en) * 1989-06-29 1991-01-10 Ek Roger B Mineralogical conversion of asbestos waste
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DE4035358A1 (en) * 1990-11-07 1992-05-21 Johannes Dieter Disposal of asbestos containing material is removed from its supporting substrate by high pressure water jets and put in receptacle, together with water and heated furnace for converting into harmless form
DE4124620A1 (en) * 1991-07-25 1993-01-28 Intec Gmbh Oschersleben Projek Disposal of hazardous waste e.g. asbestos - includes forming waste into concrete blocks opt. with colourants, water-glass or molasses
EP0545850A1 (en) * 1991-12-04 1993-06-09 SOLVAY UMWELTCHEMIE GmbH Use of asbestos decomposition wastes as aggregates for building materials
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* Cited by examiner, † Cited by third party
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DE3728787A1 (en) * 1987-08-28 1989-03-09 Heribert Hiendl Process for the disposal of residues formed in asbestos production
DE3914553A1 (en) * 1989-05-03 1990-11-08 Hoelter Heinz Thermal and mechanical treatment of asbestos materials - to avoid health risks
WO1991000123A1 (en) * 1989-06-29 1991-01-10 Ek Roger B Mineralogical conversion of asbestos waste
US5096692A (en) * 1989-06-29 1992-03-17 Ek Roger B Mineralogical conversion of asbestos waste
DE4004201A1 (en) * 1990-02-12 1991-08-14 Ortlepp Wolfgang Disposal of harmful matter esp. asbestos waste - by melting with coal or coke and flux giving prods. useful for making building material and in metallurgy
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US5676750A (en) * 1994-06-25 1997-10-14 Institut Fur Baustoff- Und Umweltshcutz-Technologie Ibu-Tec Process of treatment and environment-friendly utilization of asbestos-cement products
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WO1997015175A2 (en) * 1995-10-18 1997-05-01 Reinhard Koch Method of treating hydrooxidised natural and industrially produced materials
WO1997015175A3 (en) * 1995-10-18 1997-07-31 Reinhard Koch Method of treating hydrooxidised natural and industrially produced materials
WO1998002392A1 (en) * 1996-07-15 1998-01-22 Eternit Ag Method for disposing of fibre cement waste products
DE19641583A1 (en) * 1996-09-30 1998-04-09 Rene Kokoschko Hydraulically active mineral phase recovery
DE19641583C2 (en) * 1996-09-30 1999-01-14 Rene Kokoschko Process for the production of hydraulically active mineral phases from concrete waste
WO2005061407A1 (en) * 2003-12-18 2005-07-07 Bernard Blum Method and apparatus for control of kiln feed chemistry in cement clinker production
EP2192095A1 (en) * 2008-12-01 2010-06-02 Eberhard Recycling AG Hydraulically binding mixture and process of manufacture
WO2013110810A1 (en) * 2012-01-27 2013-08-01 Cimenteries Cbr Use of organic fibre cement as a raw material in the production of cement clinker
EA025760B1 (en) * 2012-01-27 2017-01-30 Симентери Сбр Use of organic fibre cement as a raw material in the production of cement clinker
US9926229B2 (en) 2012-01-27 2018-03-27 Cimenteries Cbr Use of organic fibre cement as a raw material in the production of cement clinker
WO2013055242A3 (en) * 2012-02-06 2013-06-13 Pawlikowski Maciej Method of utilization of asbestos and/or asbestos-containing products
CN105906224A (en) * 2015-02-24 2016-08-31 生态服务环境有限责任公司 Process for inerting residual materials containing asbestos
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EP3196178A1 (en) 2016-01-22 2017-07-26 Vykumny ustav stavebrich hmot, a.s. Method for exploiting asbestos cement waste
CN106145883A (en) * 2016-08-10 2016-11-23 卓达新材料科技集团威海股份有限公司 A kind of slag building waste is non-burning brick and preparation method thereof

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