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DE4233600C1 - Treatment of plastic wastes contg. metallic or organic impurities - involves washing with aq. alkaline medium to provide material useful as additive for building materials - Google Patents

Treatment of plastic wastes contg. metallic or organic impurities - involves washing with aq. alkaline medium to provide material useful as additive for building materials

Info

Publication number
DE4233600C1
DE4233600C1 DE19924233600 DE4233600A DE4233600C1 DE 4233600 C1 DE4233600 C1 DE 4233600C1 DE 19924233600 DE19924233600 DE 19924233600 DE 4233600 A DE4233600 A DE 4233600A DE 4233600 C1 DE4233600 C1 DE 4233600C1
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DE
Germany
Prior art keywords
metallic
plastic
additive
building materials
treatment
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.)
Expired - Fee Related
Application number
DE19924233600
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German (de)
Inventor
Heinz Dr Ing Hoelter
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19924233600 priority Critical patent/DE4233600C1/en
Priority to DE19934323865 priority patent/DE4323865C2/en
Priority to DE19934325595 priority patent/DE4325595C2/en
Priority to EP19930116006 priority patent/EP0591895A3/en
Application granted granted Critical
Publication of DE4233600C1 publication Critical patent/DE4233600C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • 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
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/20—Waste materials; Refuse organic from macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other 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
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/02—Lime
    • C04B2/04—Slaking
    • C04B2/06—Slaking with addition of substances, e.g. hydrophobic agents ; Slaking in the presence of other compounds
    • C04B2/063—Slaking of impure quick lime, e.g. contained in fly ash
    • 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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • 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
    • C04B28/14—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 calcium sulfate cements
    • C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • 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
    • C04B28/30—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 magnesium cements or similar cements
    • 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
    • C04B30/00—Compositions for artificial stone, not containing binders
    • 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
    • C04B32/00—Artificial stone not provided for in other groups of this subclass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0286—Cleaning means used for separation
    • B29B2017/0289—Washing the materials in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0293—Dissolving the materials in gases or liquids
    • B29B2017/0296—Dissolving the materials in aqueous alkaline solutions, e.g. NaOH or KOH
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/02—Aluminium
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • 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
    • Y02W30/62—Plastics recycling; Rubber recycling
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Plastic wastes contg. metallic or organic impurities are washed with an aq. alkaline medium, pref. a dil. soln. of NaOH or an aq. suspension of Ca(OH)2, having a pH above 12 to remove metallic impurities with formation of H2. The plastic waste is pref. e.g. sprayed with the wash medium while being transported on a perforated conveyor. The wash liquid is recirculated. USE/ADVANTAGE - To prepare waste from household or industrial refuse for use as additive to building materials. Formation of gases, undesirable odours and health hazards during intermediate storage and processing is effectively prevented.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Be­ handlung von Kunststoff-Restmaterial.The invention relates to a method for loading act of residual plastic material.

Es ist bekannt, daß Reststoffe, wie beispielsweise aus Siedlungs- oder Industriemüll aussortierte Kunststoffe, die für eine Wiederverarbeitung zu Gebrauchsartikeln nicht mehr verwendbar sind, als Zuschlag für Baustoffe verarbeitet werden können; derartige Verfahren sind z. B. in der DE 40 00 183 A1 und der DE 42 09 987 A1 be­ schrieben.It is known that residues, such as from Plastics sorted out from municipal or industrial waste, for reprocessing into consumer goods are no longer usable as a surcharge for building materials can be processed; are such procedures e.g. B. in DE 40 00 183 A1 and DE 42 09 987 A1 be wrote.

Derartige Reststoffe haben oft den Nachteil, daß sie herkunftsbedingt metallische Verunreinigungen enthalten. Soweit es sich um magnetisch abscheidbare Metalle wie Eisen, Nickel und Kobalt handelt, sind diese, insbesondere in zerkleinerter Form, leicht durch starke Magnetab­ scheider abtrennbar. Andere metallische Bestandteile, wie beispielsweise Kupfer, Aluminium, Zink usw., können dagegen nur in aufwendigen und recht teuren Verfahren mit Wirbelstrom­ magneten entfernt werden. Der Nachteil einiger metallischer Verunreinigungen besteht nun darin, daß sie, sofern es sich um amphoter reagierende Metalle wie Zink und Aluminium handelt, in basisch angemachten Baustoffen unter Freisetzung von Wasserstoff reagieren und aufgelöst werden. Ein weiterer Nachteil bei der Verarbeitung der eingangs erwähnten Rest­ stoffe besteht darin, daß sie organische Verunreinigungen enthalten, die über mikrobielle Zersetzungs- und Gärungs­ vorgänge zu Fäulnis führen, was bei der Lagerung und Ver­ arbeitung zu Geruchsbelästigung und Gesundheitsschädigung des Arbeitspersonals führen kann.Such residues often have the disadvantage that they due to origin contain metallic impurities. So far as it is about magnetically separable metals like Iron, nickel and cobalt, these are, in particular in shredded form, easily by strong magnet separable separator. Other metallic components, such as for example copper, aluminum, zinc etc., on the other hand, can only in complex and quite expensive processes with eddy current magnets can be removed. The disadvantage of some metallic Contamination now consists in the fact that, if it is are amphoteric reacting metals like zinc and aluminum acts, in basic made building materials with release react from hydrogen and be dissolved. Another  Disadvantage in the processing of the rest mentioned above substances is that they are organic contaminants included that have microbial decomposition and fermentation processes lead to putrefaction, which in storage and ver work on odor nuisance and damage to health of the Can lead workers.

Aus der DE 41 05 368 C1 ist ein Verfahren bekannt, bei dem mit Hilfe einer starken Base eine Zellstoffschicht von einer Kunststoffschicht abgelöst wird.From DE 41 05 368 C1 a method is known in which with the help of a strong base a plastic layer is removed.

Die DE 40 23 907 A1 zeigt ein Verfahren, bei dem ein mit biologischem Material verunreinigtes Polymer in einem alkalischen Medium aufgelöst wird.DE 40 23 907 A1 shows a method in which a biologically contaminated polymer in one alkaline medium is dissolved.

Aus der EP 03 59 106 A2 ist es bekannt, verschmutzte Kunststoffprodukte zum Durchführen eines Waschvorgangs kontinuierlich auf der einen Seite eines eine Waschlösung enthaltenden Gefäßes zuzuführen und auf der gegenüber­ liegenden Seite auszutragen sowie die Waschflüssigkeit im Umlauf zu führen.From EP 03 59 106 A2 it is known to be soiled Plastic products for washing continuously on one side of a wash solution containing the vessel and on the opposite discharge side and the washing liquid to circulate.

Ausgehend von dem vorstehend geschilderten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Ver­ fahren zur Behandlung von metallische und organische Ver­ unreinigungen enthaltendem Kunststoff-Restmaterial zur Verfügung zu stellen, bei dem sowohl die bei der end­ gültigen Verarbeitung entstehende Gasentwicklung als auch die bei der Zwischenlagerung und Verarbeitung auftretende Geruchsbelästigung und Gesundheitsgefährdung durch die vorstehend geschilderten Fäulnisvorgänge reduziert bzw. behoben sind.Based on the status of Technology, the invention has for its object a Ver drive to treat metallic and organic ver plastic residues containing impurities To make available both those at the end gas processing as well as valid processing  the one that occurs during intermediate storage and processing Odor nuisance and health hazard from the decay processes described above are reduced or are fixed.

Diese Aufgabe wird erfindungsgemäß gelöst, indem das Kunststoff-Restmaterial in einer wäßrigen, alkalischen Lösung, deren pH-Wert größer 12 beträgt, gewaschen wird, wobei die metallischen Verunreinigungen unter Wasser­ stoffbildung aufgelöst werden. Das Kunststoff-Restmaterial wird während des ohnehin nach der Sortierung notwendigen Waschvorgangs mit der wäßrigen, alkalischen Lösung behandelt, welche sowohl die metallische Auflösung und die damit ver­ bundene Wasserstoffentwicklung wie auch die mikrobiell be­ dingten Fäulnisvorgänge derart günstig beeinflußt, daß die zur Wasserstoffbildung führenden Metalle aufgelöst und die die Fäulnis bedingenden Mikroorganismen abgetötet werden. Wesentlich hierfür ist, daß die wäßrige, alkalische Lösung einen pH-Wert hat, der größer als 12 ist. Hierdurch wird einerseits die Wasserstoffentwicklung vorweggenommen und andererseits die Fäulnisbildung durch Abtötung der Mikro­ organismen vermieden.This object is achieved by the Plastic residual material in an aqueous, alkaline Solution whose pH is greater than 12 is washed, taking the metallic contaminants under water substance formation can be resolved. The plastic residual material will be necessary during the sorting anyway Treated with the aqueous alkaline solution, which both the metallic resolution and the ver bound hydrogen development as well as microbially related rotting processes so favorably influenced that the Dissolving metals leading to hydrogen formation the microorganisms causing the putrefaction are killed. It is essential that the aqueous, alkaline solution has a pH greater than 12. This will on the one hand anticipated the development of hydrogen and on the other hand, putrefaction by killing the micro organisms avoided.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention result from the subclaims.

Claims (5)

1. Verfahren zur Behandlung von Kunststoff-Restmaterial, das metallische und organische Verunreinigungen enthält, bei dem das Kunststoff-Restmaterial in einer wäßrigen, alkalischen Lösung, deren pH-Wert größer 12 beträgt, ge­ waschen wird, wobei die metallischen Verunreinigungen unter Wasserstoffbildung aufgelöst werden.1. Process for the treatment of residual plastic material, that contains metallic and organic contaminants, in which the plastic residual material in an aqueous, alkaline solution, the pH of which is greater than 12, ge will wash, leaving the metallic impurities be dissolved with the formation of hydrogen. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet daß die Waschflüssigkeit verdünnte Natronlauge ist.2. The method according to claim 1, characterized in that the washing liquid is dilute sodium hydroxide solution. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Waschflüssigkeit eine wäßrige Suspension aus Calcium­ hydroxid ist.3. The method according to claim 1, characterized in that the washing liquid is an aqueous suspension of calcium is hydroxide. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Waschvorgang in einem oben offenen Gefäß vorgenommen wird, in das der Kunststoff auf der einen Seite eingebracht und aus dem er kontinuierlich nach einer dem Verfahren angemessenen Verweilzeit auf der gegenüber­ liegenden Seite ausgetragen wird.4. The method according to any one of claims 1 to 3, characterized characterized in that the washing process in an open top Vessel is made in which the plastic on one Introduced and from which he continuously after a appropriate residence time on the other side of the procedure lying side is discharged. 5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet daß der Reststoff kontinuierlich über ein Siebband gefördert und dabei durch Berieselung mit der Waschflüssigkeit gereinigt wird, wobei die Waschflüssig­ keit vorzugsweise im Umlauf wiederverwendbar ist.5. The method according to any one of claims 1 to 3, characterized characterized in that the residue continuously over conveyed a sieve belt and by sprinkling with the Washing liquid is cleaned, the washing liquid  speed is preferably reusable in circulation.
DE19924233600 1992-10-05 1992-10-06 Treatment of plastic wastes contg. metallic or organic impurities - involves washing with aq. alkaline medium to provide material useful as additive for building materials Expired - Fee Related DE4233600C1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19924233600 DE4233600C1 (en) 1992-10-06 1992-10-06 Treatment of plastic wastes contg. metallic or organic impurities - involves washing with aq. alkaline medium to provide material useful as additive for building materials
DE19934323865 DE4323865C2 (en) 1992-10-06 1993-07-16 Process for the treatment of plastic residues
DE19934325595 DE4325595C2 (en) 1992-10-06 1993-07-30 Process for the treatment of plastic residues containing metallic and organic contaminants
EP19930116006 EP0591895A3 (en) 1992-10-05 1993-10-04 Building, stowing, or filling material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924233600 DE4233600C1 (en) 1992-10-06 1992-10-06 Treatment of plastic wastes contg. metallic or organic impurities - involves washing with aq. alkaline medium to provide material useful as additive for building materials

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DE4233600C1 true DE4233600C1 (en) 1994-03-03

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325595A1 (en) * 1992-10-06 1995-02-02 Hoelter Heinz Building material with deformable properties for underground mining
EP0710632A1 (en) * 1994-06-14 1996-05-08 Haden Schweitzer Corporation Process for producing building materials from paint sludge
DE10102554A1 (en) * 2001-01-19 2002-07-25 Heinrich Rott Separating aluminum-containing composites, e.g. for recycling packaging materials, involves treatment with alkali solution to dissolve aluminum and precipitate other materials
WO2004022503A1 (en) * 2002-09-04 2004-03-18 Purcrete Limited Polyurethane-containing building materials
WO2006079911A1 (en) * 2005-01-26 2006-08-03 Omya Development Ag Method for controlling microbial contamination, mineral suspensions obtained and uses thereof
WO2009087079A2 (en) 2008-01-04 2009-07-16 Weingart Und Kubrat Gmbh Process for utilizing aluminium in waste materials, in particular in combination with other substances

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0359106A2 (en) * 1988-09-12 1990-03-21 HERBOLD GMBH Maschinenfabrik Method of recovering and recycling polluted plastics
DE4023907A1 (en) * 1990-07-27 1992-01-30 Belland Ag METHOD FOR TREATING AND CLEANING SOLUBLE SOLVABLE IN ALKALINE MEDIUM, WITH BIOLOGICAL MATERIAL AND POTENTIAL. OTHER SUBSTANCES POLYSED
DE4105368C1 (en) * 1991-02-21 1992-05-07 Papierfabrik Schoellershammer Heinr. Aug. Schoeller Soehne Gmbh & Co Kg, 5160 Dueren, De Handling photographic paper having plastic coating - includes dissolving cellular material from plastic using strong base
DE4209987A1 (en) * 1992-03-27 1993-09-30 Hoelter Heinz Process for the disposal and economic use of solids from industrial recycling processes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0359106A2 (en) * 1988-09-12 1990-03-21 HERBOLD GMBH Maschinenfabrik Method of recovering and recycling polluted plastics
DE4023907A1 (en) * 1990-07-27 1992-01-30 Belland Ag METHOD FOR TREATING AND CLEANING SOLUBLE SOLVABLE IN ALKALINE MEDIUM, WITH BIOLOGICAL MATERIAL AND POTENTIAL. OTHER SUBSTANCES POLYSED
DE4105368C1 (en) * 1991-02-21 1992-05-07 Papierfabrik Schoellershammer Heinr. Aug. Schoeller Soehne Gmbh & Co Kg, 5160 Dueren, De Handling photographic paper having plastic coating - includes dissolving cellular material from plastic using strong base
DE4209987A1 (en) * 1992-03-27 1993-09-30 Hoelter Heinz Process for the disposal and economic use of solids from industrial recycling processes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325595A1 (en) * 1992-10-06 1995-02-02 Hoelter Heinz Building material with deformable properties for underground mining
EP0710632A1 (en) * 1994-06-14 1996-05-08 Haden Schweitzer Corporation Process for producing building materials from paint sludge
DE10102554A1 (en) * 2001-01-19 2002-07-25 Heinrich Rott Separating aluminum-containing composites, e.g. for recycling packaging materials, involves treatment with alkali solution to dissolve aluminum and precipitate other materials
WO2004022503A1 (en) * 2002-09-04 2004-03-18 Purcrete Limited Polyurethane-containing building materials
WO2006079911A1 (en) * 2005-01-26 2006-08-03 Omya Development Ag Method for controlling microbial contamination, mineral suspensions obtained and uses thereof
US8877127B2 (en) 2005-01-26 2014-11-04 Omya International Ag Process for control of microbial contamination, mineral suspensions obtained and their uses
US8889068B2 (en) 2005-01-26 2014-11-18 Omya International Ag Method for controlling microbial contamination, mineral suspensions obtained and uses thereof
WO2009087079A2 (en) 2008-01-04 2009-07-16 Weingart Und Kubrat Gmbh Process for utilizing aluminium in waste materials, in particular in combination with other substances
WO2009087079A3 (en) * 2008-01-04 2010-03-04 Weingart Und Kubrat Gmbh Process for utilizing aluminium in waste materials, in particular in combination with other substances

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