CA2214523A1 - Purification of metal containing solutions - Google Patents

Purification of metal containing solutions

Info

Publication number
CA2214523A1
CA2214523A1 CA002214523A CA2214523A CA2214523A1 CA 2214523 A1 CA2214523 A1 CA 2214523A1 CA 002214523 A CA002214523 A CA 002214523A CA 2214523 A CA2214523 A CA 2214523A CA 2214523 A1 CA2214523 A1 CA 2214523A1
Authority
CA
Canada
Prior art keywords
iron
ingoing
solution
zinc
iii
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
Application number
CA002214523A
Other languages
French (fr)
Other versions
CA2214523C (en
Inventor
Stefan Jafverstrom
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.)
Kemira Kemi AB
Original Assignee
Kemira Kemi Aktiebolag
Stefan Jafverstrom
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 claimed from SE9500775A external-priority patent/SE504959C2/en
Application filed by Kemira Kemi Aktiebolag, Stefan Jafverstrom filed Critical Kemira Kemi Aktiebolag
Publication of CA2214523A1 publication Critical patent/CA2214523A1/en
Application granted granted Critical
Publication of CA2214523C publication Critical patent/CA2214523C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/14—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00—Compounds of zinc
    • 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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
    • 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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • 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

Abstract

The present invention relates to a process for the purification of solutions containing metals comprising neutralization of the solution, reduction of Fe(III) present, and elimination of ingoing dissolved zinc, whereby the ingoing solution containing metals is neutralized using magnetite and/or metallic iron, that the ingoing iron(III) is reduced to iron(II) by means of an addition of metallic iron, that ingoing heavy metals are precipitated by the addition of a precipitating amount of a sulphide, whereby the metal sulphides precipitated are recovered by means of filtration, that the solution is, optionally, subjected to an ion exchange operation to transfer ingoing zinc into non-complex bound form, whereupon zinc is recovered as zinc carbonate, that iron(II) in the remaining solution is oxidized to iron(III), whereupon the solution is used as such or is further treated for increasing the metal content for the purpose intended.
CA002214523A 1995-03-03 1996-03-01 Purification of metal containing solutions Expired - Fee Related CA2214523C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9500775A SE504959C2 (en) 1995-03-03 1995-03-03 Process for the purification of metal-containing solutions containing iron and zinc salts
SE9500775-3 1995-03-03
PCT/SE1996/000264 WO1996027556A1 (en) 1995-03-03 1996-03-01 Purification of metal containing solutions

Publications (2)

Publication Number Publication Date
CA2214523A1 true CA2214523A1 (en) 1996-09-12
CA2214523C CA2214523C (en) 2006-09-19

Family

ID=37056991

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002214523A Expired - Fee Related CA2214523C (en) 1995-03-03 1996-03-01 Purification of metal containing solutions

Country Status (1)

Country Link
CA (1) CA2214523C (en)

Also Published As

Publication number Publication date
CA2214523C (en) 2006-09-19

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Legal Events

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Effective date: 20130301