WO1991014019A3 - Procede et dispositif de regeneration de reactifs alcalins d'attaque micrographique de l'aluminium - Google Patents

Procede et dispositif de regeneration de reactifs alcalins d'attaque micrographique de l'aluminium Download PDF

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Publication number
WO1991014019A3
WO1991014019A3 PCT/EP1991/000491 EP9100491W WO9114019A3 WO 1991014019 A3 WO1991014019 A3 WO 1991014019A3 EP 9100491 W EP9100491 W EP 9100491W WO 9114019 A3 WO9114019 A3 WO 9114019A3
Authority
WO
WIPO (PCT)
Prior art keywords
pickling
aluminium
pickling bath
alkaline solutions
temperature
Prior art date
Application number
PCT/EP1991/000491
Other languages
German (de)
English (en)
Other versions
WO1991014019A2 (fr
Inventor
Dieter Brodalla
Roland Fransson
Herbert Breunig
Michael Ferner
Original Assignee
Gartner & Co J
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 Gartner & Co J filed Critical Gartner & Co J
Priority to JP91505740A priority Critical patent/JPH05505852A/ja
Priority to DE59103815T priority patent/DE59103815D1/de
Priority to EP91906096A priority patent/EP0519987B1/fr
Publication of WO1991014019A2 publication Critical patent/WO1991014019A2/fr
Publication of WO1991014019A3 publication Critical patent/WO1991014019A3/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/36—Regeneration of waste pickling liquors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Un procédé de régénération de réactifs alcalins d'attaque micrographique de l'aluminium permet de récupérer de l'hydroxyde d'aluminium. A cet effet, on transfère un réactif d'attaque micrographique contenant de l'hydroxyde alcalin, de l'aluminate et un complexant, ainsi que d'autres additifs, d'un bain d'attaque à une section de réaction formée d'au moins un réacteur, où l'aluminium est précipité sous forme d'hydroxyde d'aluminium. Le bain d'attaque a une température plus élevée que la section de réaction. Selon le procédé, la concentration en aluminate, en alcali et en gluconate, ainsi que le température du bain d'attaque d'une part et la chute de température entre le bain d'attaque et la section de réaction d'autre part sont ajustées de sorte que le réactif d'attaque micrographique dans le bain d'attaque soit sous-saturé ou sursaturé de manière métastable par rapport à la précipitation d'hydroxyde d'aluminium, mais soit sursaturé de manière instable dans la section de réaction. L'invention concerne également un dispositif de mise en oeuvre de ce procédé.
PCT/EP1991/000491 1990-03-15 1991-03-15 Procede et dispositif de regeneration de reactifs alcalins d'attaque micrographique de l'aluminium WO1991014019A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP91505740A JPH05505852A (ja) 1990-03-15 1991-03-15 アルミニウムをピックリングするためのアルカリ性溶液の再生法及びその装置
DE59103815T DE59103815D1 (de) 1990-03-15 1991-03-15 Verfahren und vorrichtung zum regenerieren von alkalihaltigen aluminiumbeizlösungen.
EP91906096A EP0519987B1 (fr) 1990-03-15 1991-03-15 Procede et dispositif de regeneration de reactifs alcalins d'attaque micrographique de l'aluminium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008379A DE4008379A1 (de) 1990-03-15 1990-03-15 Verfahren und anlage zum regenerieren von alkalihaltigen aluminiumbeizloesungen
DEP4008379.9 1990-03-15

Publications (2)

Publication Number Publication Date
WO1991014019A2 WO1991014019A2 (fr) 1991-09-19
WO1991014019A3 true WO1991014019A3 (fr) 1991-10-31

Family

ID=6402324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/000491 WO1991014019A2 (fr) 1990-03-15 1991-03-15 Procede et dispositif de regeneration de reactifs alcalins d'attaque micrographique de l'aluminium

Country Status (5)

Country Link
EP (1) EP0519987B1 (fr)
JP (1) JPH05505852A (fr)
AT (1) ATE115197T1 (fr)
DE (2) DE4008379A1 (fr)
WO (1) WO1991014019A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5656489A (en) * 1992-07-22 1997-08-12 E. I. Du Pont De Nemours And Company Method for the remediation of organoleads especially tetraethyllead (TEL) in contaminated natural media
DE102008001577A1 (de) * 2008-05-06 2009-11-12 Wacker Chemie Ag Verfahren zur Hydrolyse von festen Metallsalzen mit wässrigen Salzlösungen
EP2352859B1 (fr) * 2008-11-03 2018-06-27 Thomas König Procédé et installation de décapage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975041A (en) * 1956-08-06 1961-03-14 Purex Corp Ltd Method for etching aluminum and aluminum alloy bodies
FR2167243A1 (en) * 1972-01-11 1973-08-24 Maltret Georges Regenerating etch bath - for etching aluminium prior to anodising
US3909405A (en) * 1972-04-07 1975-09-30 Dai Doh Plant Engineering Corp Method for treating alkaline waste streams containing aluminum dissolved therein
US4136026A (en) * 1977-11-23 1979-01-23 Aluminum Company Of America Caustic solution having controlled dissolved aluminum content
US4826605A (en) * 1986-11-03 1989-05-02 Caspian International, Inc. Process for depleted chemical milling solutions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE43977C (de) * 1892-01-31 1888-08-03 Dr. K. J. BAYER in Dorf Tentelewa bei St. Petersburg Verfahren zur darstellung von thonerdehydrat und alkalialuminat
DE2433141A1 (de) * 1974-07-10 1976-01-29 Kannegiesser H Kg Rotationskoerper zur herstellung und/ oder behandlung von bahnen, stuecken, folien und verbundmaterialien
JPS5810895B2 (ja) * 1979-07-16 1983-02-28 東京計装株式会社 デ−タ収集回路
EP0157190B1 (fr) * 1984-03-16 1990-07-18 Prof. Dr. E. Plattner Procédé de décapage d'aluminium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975041A (en) * 1956-08-06 1961-03-14 Purex Corp Ltd Method for etching aluminum and aluminum alloy bodies
FR2167243A1 (en) * 1972-01-11 1973-08-24 Maltret Georges Regenerating etch bath - for etching aluminium prior to anodising
US3909405A (en) * 1972-04-07 1975-09-30 Dai Doh Plant Engineering Corp Method for treating alkaline waste streams containing aluminum dissolved therein
US4136026A (en) * 1977-11-23 1979-01-23 Aluminum Company Of America Caustic solution having controlled dissolved aluminum content
US4826605A (en) * 1986-11-03 1989-05-02 Caspian International, Inc. Process for depleted chemical milling solutions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chemical Abstracts, Band 84, 1979, (Columbus, Ohio, US), siehe Seite 301 *

Also Published As

Publication number Publication date
EP0519987B1 (fr) 1994-12-07
DE4008379A1 (de) 1991-09-19
ATE115197T1 (de) 1994-12-15
DE59103815D1 (de) 1995-01-19
EP0519987A1 (fr) 1992-12-30
WO1991014019A2 (fr) 1991-09-19
JPH05505852A (ja) 1993-08-26
DE4008379C2 (fr) 1992-01-16

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