ATA207794A - METHOD FOR PROCESSING ZINC / IRONIC OLD ACIDS - Google Patents

METHOD FOR PROCESSING ZINC / IRONIC OLD ACIDS

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Publication number
ATA207794A
ATA207794A AT207794A AT207794A ATA207794A AT A207794 A ATA207794 A AT A207794A AT 207794 A AT207794 A AT 207794A AT 207794 A AT207794 A AT 207794A AT A207794 A ATA207794 A AT A207794A
Authority
AT
Austria
Prior art keywords
extraction
acids
waste
liquid
ironic
Prior art date
Application number
AT207794A
Other languages
German (de)
Other versions
AT400928B (en
Inventor
Reinhard Dipl Ing Olbrich
Alfred Dipl Ing Dr Neugebauer
Johannes Ing Koehlein
Original Assignee
Avr Abfallverwertungs Und Rohs
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 Avr Abfallverwertungs Und Rohs filed Critical Avr Abfallverwertungs Und Rohs
Priority to AT207794A priority Critical patent/AT400928B/en
Publication of ATA207794A publication Critical patent/ATA207794A/en
Application granted granted Critical
Publication of AT400928B publication Critical patent/AT400928B/en

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  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

A process for working up waste acids (pickling liquors) from hot galvanizing plants and electroplating operations is described. These acids contain essentially Zn2+, Fe2+, Fe3+ and free hydrochloric acid. The purpose of the process is to produce the two main metal components Zn2+ as ZnCl2 or ZnSO4 and Fe2+/Fe3+ as FeCl2/FeCl3 separately in a concentration higher than the starting concentration and/or in a particular purity. The process used for this purpose is solvent extraction (liquid-liquid extraction) in a mixer-settler plant. Before the waste acid is subjected to extraction, it should be filtered through suitable adsorbents to remove surfactants and, subsequently, Fe3+ should be reduced to Fe2+. The extraction is carried out in two stages: in the first process section A (Figure 1) Zn2+ is removed from the waste acid and Fe2+ is removed in the second process section B (Figure 2). Each extraction stage is followed by a strip (reextraction). In this way, the ion exchanger is regenerated at the same time and can then be reused for the respective extraction. <IMAGE>
AT207794A 1994-11-09 1994-11-09 Process for working up waste acids containing zinc/iron AT400928B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT207794A AT400928B (en) 1994-11-09 1994-11-09 Process for working up waste acids containing zinc/iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT207794A AT400928B (en) 1994-11-09 1994-11-09 Process for working up waste acids containing zinc/iron

Publications (2)

Publication Number Publication Date
ATA207794A true ATA207794A (en) 1995-09-15
AT400928B AT400928B (en) 1996-04-25

Family

ID=3527279

Family Applications (1)

Application Number Title Priority Date Filing Date
AT207794A AT400928B (en) 1994-11-09 1994-11-09 Process for working up waste acids containing zinc/iron

Country Status (1)

Country Link
AT (1) AT400928B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1011619A3 (en) * 1997-12-16 1999-11-09 Sidmar Nv PROCESS FOR TREATING contaminated FERRUGINOUS SLIB.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338258A1 (en) * 1983-10-21 1985-05-02 Hamm Chemie GmbH, 4100 Duisburg METHOD FOR TREATING IRON AND ZINC-CONTAINING SALT ACID
US4652352A (en) * 1985-11-04 1987-03-24 Saieva Carl J Process and apparatus for recovering metals from dilute solutions
AT398986B (en) * 1989-02-06 1995-02-27 Prior Eng Ag METHOD FOR THE PROCESSING OF ACIDS, FE-CONTAINING SOLUTIONS, IN PARTICULAR WASTE STICKING SOLUTIONS
US5192418A (en) * 1991-07-08 1993-03-09 Bethlehem Steel Corporation Metal recovery method and system for electroplating wastes
DE4131793A1 (en) * 1991-09-24 1993-03-25 Metallgesellschaft Ag METHOD AND DEVICE FOR REGENERATING REMEDIES

Also Published As

Publication number Publication date
AT400928B (en) 1996-04-25

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties
ELJ Ceased due to non-payment of the annual fee