FR2156316A1 - Galvanized scrap treatment - with sulphuric acid soln contg colloid - Google Patents
Galvanized scrap treatment - with sulphuric acid soln contg colloidInfo
- Publication number
- FR2156316A1 FR2156316A1 FR7236226A FR7236226A FR2156316A1 FR 2156316 A1 FR2156316 A1 FR 2156316A1 FR 7236226 A FR7236226 A FR 7236226A FR 7236226 A FR7236226 A FR 7236226A FR 2156316 A1 FR2156316 A1 FR 2156316A1
- Authority
- FR
- France
- Prior art keywords
- colloid
- sulphuric acid
- acid soln
- contg
- galvanized scrap
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Galvanized scrap-iron is attacked with a H2SO4 soln. contg. a colloid being: gelatine, bone glue, starch, dextrin, guar gum, or polyacrylamide flocculants. The colloids inhibit dissolution of the Fe but allow dissolution of the Zn. After the attack, the soln. may be electrolyzed to yield Zn.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE773906A BE773906A (en) | 1971-10-13 | 1971-10-13 | Galvanized scrap treatment - with sulphuric acid soln contg colloid |
BE122834 | 1972-10-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2156316A1 true FR2156316A1 (en) | 1973-05-25 |
FR2156316B1 FR2156316B1 (en) | 1976-05-21 |
Family
ID=25647613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7236226A Granted FR2156316A1 (en) | 1971-10-13 | 1972-10-12 | Galvanized scrap treatment - with sulphuric acid soln contg colloid |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2156316A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993001320A1 (en) * | 1991-07-10 | 1993-01-21 | Hoefer, Dawn, Annette | Recovery of nickel |
FR2737673A1 (en) * | 1995-08-09 | 1997-02-14 | Europ De Dezingage Comp | PROCESS FOR RECOVERING WASTE, MADE OF SHEETS COVERED ON AT LEAST ONE SIDE OF A ZINC LAYER |
WO2010034465A1 (en) * | 2008-09-23 | 2010-04-01 | Drt Deutsche Rohstofftechnik Gmbh | Method for the selective acidic dezincification of steel scrap |
WO2011038746A1 (en) * | 2009-09-30 | 2011-04-07 | Drt Deutsche Rohstofftechnik Gmbh | Acidic dezincification |
-
1972
- 1972-10-12 FR FR7236226A patent/FR2156316A1/en active Granted
Non-Patent Citations (1)
Title |
---|
NEANT * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993001320A1 (en) * | 1991-07-10 | 1993-01-21 | Hoefer, Dawn, Annette | Recovery of nickel |
FR2737673A1 (en) * | 1995-08-09 | 1997-02-14 | Europ De Dezingage Comp | PROCESS FOR RECOVERING WASTE, MADE OF SHEETS COVERED ON AT LEAST ONE SIDE OF A ZINC LAYER |
WO1997006283A1 (en) * | 1995-08-09 | 1997-02-20 | Compagnie Europeenne De Dezingage | Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof |
WO2010034465A1 (en) * | 2008-09-23 | 2010-04-01 | Drt Deutsche Rohstofftechnik Gmbh | Method for the selective acidic dezincification of steel scrap |
WO2011038746A1 (en) * | 2009-09-30 | 2011-04-07 | Drt Deutsche Rohstofftechnik Gmbh | Acidic dezincification |
Also Published As
Publication number | Publication date |
---|---|
FR2156316B1 (en) | 1976-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |