WO1995005488A1 - Procede pour le retraitement de substrats plats recouverts d'aluminium - Google Patents

Procede pour le retraitement de substrats plats recouverts d'aluminium Download PDF

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Publication number
WO1995005488A1
WO1995005488A1 PCT/DE1994/000946 DE9400946W WO9505488A1 WO 1995005488 A1 WO1995005488 A1 WO 1995005488A1 DE 9400946 W DE9400946 W DE 9400946W WO 9505488 A1 WO9505488 A1 WO 9505488A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum
shredded
substrate
metal
coated
Prior art date
Application number
PCT/DE1994/000946
Other languages
German (de)
English (en)
Inventor
Edmund Sorg
Original Assignee
Edmund Sorg
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
Priority claimed from DE4329773A external-priority patent/DE4329773C1/de
Application filed by Edmund Sorg filed Critical Edmund Sorg
Priority to AU74559/94A priority Critical patent/AU7455994A/en
Publication of WO1995005488A1 publication Critical patent/WO1995005488A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/62—Metallic pigments or fillers
    • C09C1/64—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/62—Metallic pigments or fillers
    • C09C1/64—Aluminium
    • C09C1/644—Aluminium treated with organic compounds, e.g. polymers
    • C09C1/646—Aluminium treated with organic compounds, e.g. polymers concomitant with mechanical comminution, shaping or abrasion of the particles

Definitions

  • the invention relates to a process for the reprocessing of aluminum-coated flat substrates, in particular foils, sheets, strips, in one
  • Aluminum granules and a fibrous substrate felt Aluminum granules and a fibrous substrate felt.
  • the said flat substrates are, for example, paper or plastic-laminated or printed or colored aluminum foil waste.
  • Foil waste received treatment may contain dioxin, or in any case pose an environmental hazard. For this reason there are washing systems in the known processes for the exhaust gases required, which are very complex both in terms of acquisition and operation. In addition, their operational reliability can leave nothing to be desired. Another deficiency of these known methods is that the resulting aluminum granules contain combustion products, in particular carbon resulting from the burned or thermally treated substrate, which must be removed from the aluminum granules in a separate device. This also has a disadvantageous effect on the production costs of the aluminum granulate. Another shortcoming of such combustion processes or thermal processes is their energy consumption.
  • the invention has for its object to provide a method of the type mentioned that does not have the above-mentioned shortcomings, i.e. the environmentally friendly and with low energy consumption an optimal separation of the
  • the flat substrates coated with aluminum are therefore in a first
  • the substrates coated with aluminum are chopped into a starting material with dimensions between 1 and 50 mm, preferably between 5 mm and 20 mm.
  • the shredded primary material consists of a mixture of paper-laminated aluminum foil waste, plastic-coated aluminum foil waste and printed or colored aluminum foil waste.
  • 50% by weight of paper-clad aluminum foil wastes with 35% by weight of plastic-clad aluminum foil wastes and 15% by weight of printing or colored aluminum foil wastes can be mixed. Any other mixing ratios are of course also possible.
  • the very special grinding of the shredded primary material by means of the interlocking mechanical systems, which rotate at high speeds, results in a mechanical separation the aluminum coating from the substrate and rolling up the aluminum to the corresponding granulate.
  • the shredded primary material is preferably mechanically ground in such a way that aluminum granules with a grain size of between 20 and 100 ⁇ m, preferably of approximately 400 ⁇ m, and a long-fiber substrate felt result.
  • the long-fiber substrate felt can then advantageously be reused, for example in paper production. That with the inventive
  • Processed aluminum granulate can be mechanically subjected to a fractionation into defined grain fractions and can be reused, for example, as aluminum pigment in the paint industry or the like.
  • pigments can be produced from the aluminum granulate using a grinding device.
  • the said grinding device can e.g. a known ball mill or the like. act.
  • the aluminum granules can be ground to aluminum pigments in a wet medium. Hydrocarbons can be used as the wet medium. It is also possible to grind the aluminum granulate dry. This can e.g. happen in a nitrogen atmosphere.
  • the aluminum granulate is preferably added
  • Aluminum pigments with a size of about 2 to 100 microns, preferably from 2 to 20 microns ground.
  • the thickness of the individual aluminum pigments is on the order of 4 ⁇ m.
  • an aluminum lacquer is obtained which, in a particularly advantageous manner, has a bright metallic finish has a silver-like surface.
  • commercially available aluminum paints only have a comparatively dark aluminum-like surface, ie they show no silver effect.
  • the process according to the invention is thus distinguished by the fact that exhaust gases which are hazardous or harmful to the environment are avoided, that washing plants are not required to remove such exhaust gases, that the energy requirement is comparatively low, that a liquid requirement, as is required in the liquid processes mentioned at the outset, it is not the case that not only the recovered aluminum granulate but also the substrate material in the form of the long-fiber substrate felt produced according to the invention
  • the method according to the invention is briefly explained again below using the block diagram shown in the drawing.
  • the drawing figure clarifies the starting material through block 10.
  • the said starting material is flat substrates coated with aluminum, such as paper or plastic-laminated aluminum foil waste, or printed or colored aluminum foil waste.
  • the starting material 10 is mechanically shredded, which is indicated by the block 12.
  • the primary material resulting from the mechanical shredding has dimensions between 1 and 50 mm, preferably between 5 and 20 mm.
  • the shredded primary material is then mechanically ground by means of interlocking mechanical systems, which is indicated by block 14. During mechanical grinding, the corresponding aluminum granulate is formed, which is indicated by block 16, and at the same time a substrate felt 18, which is illustrated by block 18.
  • the aluminum granulate 16 has a grain size between 20 and 1000 ⁇ m, preferably of approximately 400 ⁇ m.
  • the substrate felt 18 is advantageously relatively long-fiber, so that it is suitable for reuse, for example in paper manufacture, which is indicated by the block 20. Of course, the substrate felt can also be sent to another suitable reuse.
  • the aluminum granulate 16 can be fed to a fractionation, which is illustrated by block 22. Fractionation 22 results in a separation into different grain fractions of the aluminum granulate in a manner known per se.
  • the aluminum granulate can then be ground into pigments which, mixed with a suitable binder, can be reused in the paint industry or the like. This is indicated in the drawing by block 24.
  • Aluminum lacquers produced according to the invention advantageously result in a bright metallic, silver-like surface. Such a silver effect cannot be achieved with the known commercially available aluminum pigments.
  • the invention aluminum granules with different finenesses or grain sizes are obtained in one working process, and in particular the advantage is that the pigments produced from these granules mixed with suitable commercially available binders lead to lacquers which have a metallic bare surface silver-like effect.
  • the capacity of a plant for carrying out the method according to the invention can vary depending on the type of application

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

La présente invention décrit un procédé pour le retraitement de substrats plats recouverts de métal et, en particulier, d'aluminium, ces substrats étant des films, des feuilles, des bandes ou autres. Le métal est séparé du substrat et granulé. A cet effet, conformément à l'invention, les substrats plats recouverts de métal sont mécaniquement découpés pour donner une matière brute découpée qui est ensuite broyée mécaniquement de sorte que le métal se détache du substrat et que se forme un granulé à partir du métal et un feutre fibreux à partir du substrat. Un pigment est ensuite produit à partir du granulé de métal, en particulier d'aluminium. Mélangé avec un liant du commerce, le pigment d'aluminium donne une surface métallique brillante argentée.
PCT/DE1994/000946 1993-08-14 1994-08-13 Procede pour le retraitement de substrats plats recouverts d'aluminium WO1995005488A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74559/94A AU7455994A (en) 1993-08-14 1994-08-13 Method of reprocessing flat substrates coated with aluminium

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4327355.6 1993-08-14
DE4327355 1993-08-14
DEP4329773.0 1993-09-03
DE4329773A DE4329773C1 (de) 1993-08-14 1993-09-03 Verfahren zur Wiederaufbereitung metallbeschichteter flächiger Substrate

Publications (1)

Publication Number Publication Date
WO1995005488A1 true WO1995005488A1 (fr) 1995-02-23

Family

ID=25928630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1994/000946 WO1995005488A1 (fr) 1993-08-14 1994-08-13 Procede pour le retraitement de substrats plats recouverts d'aluminium

Country Status (2)

Country Link
AU (1) AU7455994A (fr)
WO (1) WO1995005488A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998049238A1 (fr) * 1997-04-28 1998-11-05 Basf Aktiengesellschaft Utilisation de produits recycles de cd comme materiau pour impression par coloration a paillettes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE146509T1 (de) * 1992-07-23 1997-01-15 Silberline Ltd Metallpulverpigment

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2035854A (en) * 1978-11-29 1980-06-25 Alcan Res & Dev Aluminium powder blasting slurry sensitizer
FR2510428A1 (fr) * 1981-07-31 1983-02-04 Scal Gp Condit Aluminium Procede de recuperation des elements de dechets composes d'aluminium et de papier et/ou de matieres plastiques
DE3313872C1 (de) * 1983-04-16 1984-07-26 Metac Metallaufbereitung GmbH, 4432 Gronau Verfahren und Anlage zur Aufbereitung von mit einer Oberflaechenbeschichtung versehenen Metallteilen
AT378336B (de) * 1983-11-07 1985-07-25 Chemie Linz Ag Verfahren zur trennung von metall und kunststoff eines plattenartigen metall/kunststoffverbundmaterials
JPS61238929A (ja) * 1985-04-16 1986-10-24 Bunka Nenryo Kk アルミニウム回収方法
JPS61238928A (ja) * 1985-04-16 1986-10-24 Bunka Nenryo Kk アルミニウム回収方法
EP0441739A1 (fr) * 1990-02-08 1991-08-14 Alusuisse-Lonza Services Ag Procédé pour le recyclage de déchets métalliques revêtus par déchiquetage
US5246116A (en) * 1992-09-22 1993-09-21 Reynolds Metals Company Method and apparatus for separation and recovery of the components from foil-containing laminates

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2035854A (en) * 1978-11-29 1980-06-25 Alcan Res & Dev Aluminium powder blasting slurry sensitizer
FR2510428A1 (fr) * 1981-07-31 1983-02-04 Scal Gp Condit Aluminium Procede de recuperation des elements de dechets composes d'aluminium et de papier et/ou de matieres plastiques
DE3313872C1 (de) * 1983-04-16 1984-07-26 Metac Metallaufbereitung GmbH, 4432 Gronau Verfahren und Anlage zur Aufbereitung von mit einer Oberflaechenbeschichtung versehenen Metallteilen
AT378336B (de) * 1983-11-07 1985-07-25 Chemie Linz Ag Verfahren zur trennung von metall und kunststoff eines plattenartigen metall/kunststoffverbundmaterials
JPS61238929A (ja) * 1985-04-16 1986-10-24 Bunka Nenryo Kk アルミニウム回収方法
JPS61238928A (ja) * 1985-04-16 1986-10-24 Bunka Nenryo Kk アルミニウム回収方法
EP0441739A1 (fr) * 1990-02-08 1991-08-14 Alusuisse-Lonza Services Ag Procédé pour le recyclage de déchets métalliques revêtus par déchiquetage
US5246116A (en) * 1992-09-22 1993-09-21 Reynolds Metals Company Method and apparatus for separation and recovery of the components from foil-containing laminates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 085 (C - 410) 14 March 1987 (1987-03-14) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998049238A1 (fr) * 1997-04-28 1998-11-05 Basf Aktiengesellschaft Utilisation de produits recycles de cd comme materiau pour impression par coloration a paillettes

Also Published As

Publication number Publication date
AU7455994A (en) 1995-03-14

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