ATE127538T1 - USE OF EASILY REMOVABLE INHIBITORS IN STICKING ACIDS. - Google Patents

USE OF EASILY REMOVABLE INHIBITORS IN STICKING ACIDS.

Info

Publication number
ATE127538T1
ATE127538T1 AT93120411T AT93120411T ATE127538T1 AT E127538 T1 ATE127538 T1 AT E127538T1 AT 93120411 T AT93120411 T AT 93120411T AT 93120411 T AT93120411 T AT 93120411T AT E127538 T1 ATE127538 T1 AT E127538T1
Authority
AT
Austria
Prior art keywords
inhibitors
acids
sticking
easily removable
pickling acids
Prior art date
Application number
AT93120411T
Other languages
German (de)
Inventor
Guenther Dr Wasow
Lothar Klicker
Hay Fieten
Klaus Dr Tebbe
Original Assignee
Norsk Hydro Chemtech Gmbh
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 Norsk Hydro Chemtech Gmbh filed Critical Norsk Hydro Chemtech Gmbh
Application granted granted Critical
Publication of ATE127538T1 publication Critical patent/ATE127538T1/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
    • 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
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/061—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors nitrogen-containing compounds
    • 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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention relates to the use of special inhibitors in pickling acids, which can be eliminated during the reprocessing of the spent pickling acids by conventional processes, and to pickling acids which contain these inhibitors, and also to a process for cleaning spent acidic metal pickles containing these inhibitors, which is characterised in that the inhibitor/activator system present is removed before the further processing.
AT93120411T 1992-12-24 1993-12-17 USE OF EASILY REMOVABLE INHIBITORS IN STICKING ACIDS. ATE127538T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4244245A DE4244245A1 (en) 1992-12-24 1992-12-24 Use of easily removable inhibitors in pickling acids

Publications (1)

Publication Number Publication Date
ATE127538T1 true ATE127538T1 (en) 1995-09-15

Family

ID=6476650

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93120411T ATE127538T1 (en) 1992-12-24 1993-12-17 USE OF EASILY REMOVABLE INHIBITORS IN STICKING ACIDS.

Country Status (5)

Country Link
EP (1) EP0603763B1 (en)
AT (1) ATE127538T1 (en)
DE (2) DE4244245A1 (en)
DK (1) DK0603763T3 (en)
ES (1) ES2077465T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618899A1 (en) * 1996-05-10 1997-11-13 Metallgesellschaft Ag Process for removing conversion layers with a soap content from metallic workpieces
DE102023123910A1 (en) * 2023-09-05 2025-03-06 Spiraltec Gmbh Metal separation from acidic aqueous solutions
DE102023123911A1 (en) * 2023-09-05 2025-03-06 Spiraltec Gmbh Wastewater-free treatment of acidic aqueous metal salt-containing solutions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE481309A (en) * 1947-03-25
US3113113A (en) * 1958-11-07 1963-12-03 Armour & Co Corrosion inhibitor compositions
US3056746A (en) * 1959-02-24 1962-10-02 Jr Frederick C Brightly Acid pickling composition with inhibitor
FR1283323A (en) * 1960-12-23 1962-02-02 Cie D Applic Chimiques A L Ind Product inhibitor of metal attack by strong acids
GB1010753A (en) * 1963-08-22 1965-11-24 Ici Ltd Corrosion restraining compositions
JPS4989635A (en) * 1972-12-27 1974-08-27
US4381249A (en) * 1979-05-14 1983-04-26 Bouffard Joseph O Rust removing and metal surface protecting composition

Also Published As

Publication number Publication date
DE59300568D1 (en) 1995-10-12
ES2077465T3 (en) 1995-11-16
DE4244245A1 (en) 1994-06-30
EP0603763B1 (en) 1995-09-06
DK0603763T3 (en) 1995-12-04
EP0603763A1 (en) 1994-06-29

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Legal Events

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