ATE110123T1 - RECOVERY OF SODIUM HYDROXIDE AND ALUMINUM HYDROXIDE FROM CAUSTIC WASTE. - Google Patents

RECOVERY OF SODIUM HYDROXIDE AND ALUMINUM HYDROXIDE FROM CAUSTIC WASTE.

Info

Publication number
ATE110123T1
ATE110123T1 AT91109027T AT91109027T ATE110123T1 AT E110123 T1 ATE110123 T1 AT E110123T1 AT 91109027 T AT91109027 T AT 91109027T AT 91109027 T AT91109027 T AT 91109027T AT E110123 T1 ATE110123 T1 AT E110123T1
Authority
AT
Austria
Prior art keywords
recovery
sodium hydroxide
hydroxide
aluminum
aluminum hydroxide
Prior art date
Application number
AT91109027T
Other languages
German (de)
Inventor
Thomas A Davis
Original Assignee
Graver Co
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 Graver Co filed Critical Graver Co
Application granted granted Critical
Publication of ATE110123T1 publication Critical patent/ATE110123T1/en

Links

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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/46—Regeneration of etching compositions

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)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • ing And Chemical Polishing (AREA)
  • Removal Of Specific Substances (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Physical Water Treatments (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

A method for the recovery and recycling of sodium hydroxide from the waste solution of aluminum etching operations. The method utilizes a dialysis membrane column or stack to initially remove sodium hydroxide from the waste solution and return it to the etch tank base solution sufficiently concentrated to carry on the basic etching operation. The method permits the recovery of salable quantities of aluminum hydroxide.
AT91109027T 1990-07-06 1991-06-03 RECOVERY OF SODIUM HYDROXIDE AND ALUMINUM HYDROXIDE FROM CAUSTIC WASTE. ATE110123T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54939690A 1990-07-06 1990-07-06

Publications (1)

Publication Number Publication Date
ATE110123T1 true ATE110123T1 (en) 1994-09-15

Family

ID=24192856

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91109027T ATE110123T1 (en) 1990-07-06 1991-06-03 RECOVERY OF SODIUM HYDROXIDE AND ALUMINUM HYDROXIDE FROM CAUSTIC WASTE.

Country Status (8)

Country Link
EP (1) EP0465822B1 (en)
JP (1) JPH05115871A (en)
AT (1) ATE110123T1 (en)
AU (1) AU634661B2 (en)
CA (1) CA2043717A1 (en)
DE (1) DE69103486T2 (en)
ES (1) ES2057668T3 (en)
MX (1) MX9100096A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710563C2 (en) * 1997-03-14 2003-10-02 Daimler Chrysler Ag Method and device for operating aluminum milling baths
CN1298637C (en) * 2005-08-08 2007-02-07 南京工业大学 Method for recovering sodium hydroxide from pigment-containing waste alkali liquor
JP5016973B2 (en) * 2007-05-21 2012-09-05 株式会社野坂電機 Method and apparatus for alkali recovery of alkali etchant
DE112009003274A5 (en) * 2008-11-03 2012-09-20 Thomas König Baking method and dressing
CN101928948A (en) * 2010-09-02 2010-12-29 吉林麦达斯铝业有限公司 Recovery process of alkaline washing residual liquid for aluminum profile extrusion die
DE102013105177A1 (en) * 2013-05-21 2014-11-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process for obtaining metallic fractions and metal-depleted material from metal-containing materials
CN104626453A (en) * 2014-12-05 2015-05-20 博罗县东明化工有限公司 Preparation method of aluminum alloy resin composite body and aluminum alloy resin composite body
US11545307B2 (en) * 2019-02-11 2023-01-03 Pacesetter, Inc. Fabrication of capacitors and recovery of capacitor fabrication matertials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607482A (en) * 1969-08-11 1971-09-21 Wilson & Co Process of regeneration of metal treating solutions
US4136026A (en) * 1977-11-23 1979-01-23 Aluminum Company Of America Caustic solution having controlled dissolved aluminum content
JPS5827984A (en) * 1981-08-10 1983-02-18 Kurisutaru Eng Kk Regenerating method for alkali etching solution of aluminum and alloy thereof
GB8612627D0 (en) * 1986-05-23 1986-07-02 Ici Plc Dechlorination of aqueous alkali metal chloride solution
US4826605A (en) * 1986-11-03 1989-05-02 Caspian International, Inc. Process for depleted chemical milling solutions

Also Published As

Publication number Publication date
DE69103486D1 (en) 1994-09-22
EP0465822B1 (en) 1994-08-17
AU634661B2 (en) 1993-02-25
ES2057668T3 (en) 1994-10-16
AU7948091A (en) 1992-01-09
JPH05115871A (en) 1993-05-14
DE69103486T2 (en) 1994-12-08
MX9100096A (en) 1992-02-28
CA2043717A1 (en) 1992-01-07
EP0465822A1 (en) 1992-01-15

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee