BE773906A - Galvanized scrap treatment - with sulphuric acid soln contg colloid - Google Patents

Galvanized scrap treatment - with sulphuric acid soln contg colloid

Info

Publication number
BE773906A
BE773906A BE773906A BE773906A BE773906A BE 773906 A BE773906 A BE 773906A BE 773906 A BE773906 A BE 773906A BE 773906 A BE773906 A BE 773906A BE 773906 A BE773906 A BE 773906A
Authority
BE
Belgium
Prior art keywords
colloid
sulphuric acid
acid soln
contg
galvanized scrap
Prior art date
Application number
BE773906A
Other languages
French (fr)
Original Assignee
Prayon
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
Priority to BE789772D priority Critical patent/BE789772R/en
Application filed by Prayon filed Critical Prayon
Priority to BE773906A priority patent/BE773906A/en
Publication of BE773906A publication Critical patent/BE773906A/en
Priority to FR7236226A priority patent/FR2156316A1/en

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.
BE773906A 1971-10-13 1971-10-13 Galvanized scrap treatment - with sulphuric acid soln contg colloid BE773906A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE789772D BE789772R (en) 1971-10-13 Agitating galvanished iron objects - in a sulphuric acid contg bath to obtain complete zinc dissolution
BE773906A BE773906A (en) 1971-10-13 1971-10-13 Galvanized scrap treatment - with sulphuric acid soln contg colloid
FR7236226A FR2156316A1 (en) 1971-10-13 1972-10-12 Galvanized scrap treatment - with sulphuric acid soln contg colloid

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE773906A true BE773906A (en) 1972-01-31

Family

ID=3858752

Family Applications (1)

Application Number Title Priority Date Filing Date
BE773906A BE773906A (en) 1971-10-13 1971-10-13 Galvanized scrap treatment - with sulphuric acid soln contg colloid

Country Status (1)

Country Link
BE (1) BE773906A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008048493A1 (en) 2008-09-23 2010-04-08 Drt Deutsche Rohstofftechnik Gmbh Process for the selective acid dezincification of steel scrap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008048493A1 (en) 2008-09-23 2010-04-08 Drt Deutsche Rohstofftechnik Gmbh Process for the selective acid dezincification of steel scrap
DE102008048493B4 (en) * 2008-09-23 2011-04-28 Drt Deutsche Rohstofftechnik Gmbh Process for the selective acid dezincification of steel scrap

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