FR2167243A1 - Regenerating etch bath - for etching aluminium prior to anodising - Google Patents

Regenerating etch bath - for etching aluminium prior to anodising

Info

Publication number
FR2167243A1
FR2167243A1 FR7200741A FR7200741A FR2167243A1 FR 2167243 A1 FR2167243 A1 FR 2167243A1 FR 7200741 A FR7200741 A FR 7200741A FR 7200741 A FR7200741 A FR 7200741A FR 2167243 A1 FR2167243 A1 FR 2167243A1
Authority
FR
France
Prior art keywords
bath
anodising
regenerating
etch bath
etching aluminium
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.)
Granted
Application number
FR7200741A
Other languages
French (fr)
Other versions
FR2167243B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MALTRET GEORGES
Original Assignee
MALTRET GEORGES
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 MALTRET GEORGES filed Critical MALTRET GEORGES
Priority to FR7200741A priority Critical patent/FR2167243A1/en
Publication of FR2167243A1 publication Critical patent/FR2167243A1/en
Application granted granted Critical
Publication of FR2167243B1 publication Critical patent/FR2167243B1/fr
Granted legal-status Critical Current

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/28—Purification; Separation
    • C01D1/30—Purification; Separation by crystallisation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/16—Regeneration of process solutions
    • C25D21/18—Regeneration of process solutions of electrolytes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Cau stic soda contg. aluminate ions is continuously removed from the etch bath at 60 degrees C cooled to 30 degrees C to ppte out Al(OH)3 and recycled to the bath. Process prevents the Al(OH)3 from depositing in the bath and clogging the operation. The NaOH soln. is then enriched and circulated around the output soln. to cool it, while gaining heat prior to reentering the etch bath.
FR7200741A 1972-01-11 1972-01-11 Regenerating etch bath - for etching aluminium prior to anodising Granted FR2167243A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7200741A FR2167243A1 (en) 1972-01-11 1972-01-11 Regenerating etch bath - for etching aluminium prior to anodising

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7200741A FR2167243A1 (en) 1972-01-11 1972-01-11 Regenerating etch bath - for etching aluminium prior to anodising

Publications (2)

Publication Number Publication Date
FR2167243A1 true FR2167243A1 (en) 1973-08-24
FR2167243B1 FR2167243B1 (en) 1975-10-24

Family

ID=9091697

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7200741A Granted FR2167243A1 (en) 1972-01-11 1972-01-11 Regenerating etch bath - for etching aluminium prior to anodising

Country Status (1)

Country Link
FR (1) FR2167243A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004841A2 (en) * 1978-04-05 1979-10-17 EXERGIE Société de Personnes à Responsabilité Limitée Integrated process for treating waste water from anodisation plants
WO1991014019A3 (en) * 1990-03-15 1991-10-31 Gartner & Co J Process and device for regenerating alkaline solutions for pickling aluminium
US5512129A (en) * 1990-03-15 1996-04-30 Josef Gartner & Co. Method for regenerating alkaline solutions for pickling aluminum
ES2168073A1 (en) * 2000-07-25 2002-05-16 Moltta Consultadoria E Marketi Recovery of coating removal material involves filtration of material and separation of inert slurry, compaction of slurry by pressing and formation from filtered solution

Citations (1)

* 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

Patent Citations (1)

* 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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004841A2 (en) * 1978-04-05 1979-10-17 EXERGIE Société de Personnes à Responsabilité Limitée Integrated process for treating waste water from anodisation plants
FR2421849A1 (en) * 1978-04-05 1979-11-02 Wajc Samuel INTEGRATED PROCESS FOR THE TREATMENT OF RESIDUAL WATER FROM ANODIZATION WORKSHOPS AND INSTALLATION USED FOR THIS PROCESS
EP0004841A3 (en) * 1978-04-05 1979-11-14 Exergie Societe De Personnes A Responsabilite Limitee Integrated process and installation for treating waste water from anodisation plants
WO1991014019A3 (en) * 1990-03-15 1991-10-31 Gartner & Co J Process and device for regenerating alkaline solutions for pickling aluminium
US5512129A (en) * 1990-03-15 1996-04-30 Josef Gartner & Co. Method for regenerating alkaline solutions for pickling aluminum
ES2168073A1 (en) * 2000-07-25 2002-05-16 Moltta Consultadoria E Marketi Recovery of coating removal material involves filtration of material and separation of inert slurry, compaction of slurry by pressing and formation from filtered solution

Also Published As

Publication number Publication date
FR2167243B1 (en) 1975-10-24

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Legal Events

Date Code Title Description
ST Notification of lapse