DE59203700D1 - METHOD FOR REGENERATING OLD Stains. - Google Patents

METHOD FOR REGENERATING OLD Stains.

Info

Publication number
DE59203700D1
DE59203700D1 DE59203700T DE59203700T DE59203700D1 DE 59203700 D1 DE59203700 D1 DE 59203700D1 DE 59203700 T DE59203700 T DE 59203700T DE 59203700 T DE59203700 T DE 59203700T DE 59203700 D1 DE59203700 D1 DE 59203700D1
Authority
DE
Germany
Prior art keywords
regenerating old
old stains
stains
regenerating
pickling
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
DE59203700T
Other languages
German (de)
Inventor
Volker Bruecken
Manfred Poetzschke
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.)
MG Technologies AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Application granted granted Critical
Publication of DE59203700D1 publication Critical patent/DE59203700D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

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)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

Described is a method of recycling the used pickling liquor, containing iron and/or zinc salts, which arises in the pickling of steel workpieces using mineral acids, the used pickling liquor being fed through an electrolytic bath operating with cation-exchange membranes.
DE59203700T 1991-09-24 1992-09-19 METHOD FOR REGENERATING OLD Stains. Expired - Fee Related DE59203700D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4131793A DE4131793A1 (en) 1991-09-24 1991-09-24 METHOD AND DEVICE FOR REGENERATING REMEDIES
PCT/DE1992/000808 WO1993006262A1 (en) 1991-09-24 1992-09-19 Method and device for recycling used pickling liquors

Publications (1)

Publication Number Publication Date
DE59203700D1 true DE59203700D1 (en) 1995-10-19

Family

ID=6441386

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4131793A Withdrawn DE4131793A1 (en) 1991-09-24 1991-09-24 METHOD AND DEVICE FOR REGENERATING REMEDIES
DE59203700T Expired - Fee Related DE59203700D1 (en) 1991-09-24 1992-09-19 METHOD FOR REGENERATING OLD Stains.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4131793A Withdrawn DE4131793A1 (en) 1991-09-24 1991-09-24 METHOD AND DEVICE FOR REGENERATING REMEDIES

Country Status (5)

Country Link
EP (1) EP0612359B1 (en)
AT (1) ATE127861T1 (en)
AU (1) AU2570592A (en)
DE (2) DE4131793A1 (en)
WO (1) WO1993006262A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4326854A1 (en) * 1993-08-11 1995-02-16 Heraeus Elektrochemie Process for the regeneration of an aqueous solution containing metal ions and sulfuric acid, and device
AUPM424894A0 (en) * 1994-03-04 1994-03-31 Spunboa Pty Limited Treatment of electrolyte solutions
AT400928B (en) * 1994-11-09 1996-04-25 Avr Abfallverwertungs Und Rohs Process for working up waste acids containing zinc/iron
DE19829592C1 (en) * 1998-07-02 1999-12-09 Umweltanalytisches Zentrum Gro Mineral acids containing metals from pickling plants are processed and recovered
DE19850525A1 (en) * 1998-11-03 2000-05-04 Eilenburger Elektrolyse & Umwelttechnik Gmbh Regeneration of sulfuric acid-iron(III) sulfate pickling solution, used especially for special steels, involves perdisulfuric acid production in a spent solution electrolysis cell
DE102015208690A1 (en) 2015-05-11 2016-11-17 Technische Universität Bergakademie Freiberg Electrodialytic production of phosphoric acid and device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1155610B (en) * 1961-05-18 1963-10-10 Ionics Method and cell for the electrolytic deposition of metals, in particular iron
US3072545A (en) * 1961-11-20 1963-01-08 Ionics Electroplating of metals
DE1571728A1 (en) * 1966-10-01 1970-12-17 Duerkes Dipl Chem Dr Karl Process for the regeneration and / or preparation as well as cleaning of pickling baths, washing and rinsing fluids, galvanic baths and waste water
US3801481A (en) * 1972-04-21 1974-04-02 Dean D Method for purifying the liquor of a galvanizing process plant after contamination
US4149946A (en) * 1978-03-21 1979-04-17 Davis Walker Corporation Recovery of spent pickle liquor and iron metal
US4149951A (en) * 1978-05-22 1979-04-17 Eddleman William L Frame filter press and apparatus
DE3906791A1 (en) * 1989-03-03 1990-09-06 Metallgesellschaft Ag Method of reprocessing waste pickling liquors containing metal, nitric acid and hydrofluoric acid

Also Published As

Publication number Publication date
EP0612359A1 (en) 1994-08-31
WO1993006262A1 (en) 1993-04-01
EP0612359B1 (en) 1995-09-13
DE4131793A1 (en) 1993-03-25
ATE127861T1 (en) 1995-09-15
AU2570592A (en) 1993-04-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MG TECHNOLOGIES AG, 60325 FRANKFURT, DE

8339 Ceased/non-payment of the annual fee