GB1371302A - Removal of chloride from crude zinc sulphate solutions - Google Patents

Removal of chloride from crude zinc sulphate solutions

Info

Publication number
GB1371302A
GB1371302A GB2253273A GB2253273A GB1371302A GB 1371302 A GB1371302 A GB 1371302A GB 2253273 A GB2253273 A GB 2253273A GB 2253273 A GB2253273 A GB 2253273A GB 1371302 A GB1371302 A GB 1371302A
Authority
GB
United Kingdom
Prior art keywords
chloride
solution
zncl2
zinc
tetrahydrocarbyl
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.)
Expired
Application number
GB2253273A
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to GB2253273A priority Critical patent/GB1371302A/en
Priority to NL7406225A priority patent/NL7406225A/xx
Publication of GB1371302A publication Critical patent/GB1371302A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00—Compounds of zinc
    • C01G9/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • 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
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/34—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing sulfur, e.g. sulfonium
    • 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

1371302 Removal of ZnCl2 from solutions SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 11 May 1973 22532/73 Heading C1A ZnCl2 is removed from solutions containing Zn <++>, Cl- and SO4 = (Zn<++> : Clratio more than 0À5) by liquid-liquid extraction with an organic solvent containing a tetrahydrocarbyl ammonium thiocyanate, the extract, which may first be washed with water, being then regenerated by contact with ammonia solution giving the solvent which may be re-used and an aqueous solution. This aqueous solution which contains tetra-ammine zinc chloride may be boiled down in the presence of ammonia chloride to precipitate di-ammine zinc chloride. This may be decomposed by heat to give ZnCl2 and NH3. The tetrahydrocarbyl ammonium thiocyanate, which may have one methyl and three alkyl groups containing 8 to 10 C atoms, may be 0À3- 0À6 M in the organic solvent. Toluene is exemplified and other solvents are listed. The starting solution may be an aqueous zinc sulphate solution containing chloride ions for use in the electrolytic preparation of zine or a solution obtained by dissolving zinc waste containing Cl from fluxes in H2SO4 and the raffinate is then a chloride-free aqueous solution of zinc sulphate. The term tetrahydrocarbyl ammonium thiocyanate is defined as tetrahydrocarbyl aminonium thiocyanate whose hydrocarbyl groups may or may not be substituted.
GB2253273A 1973-05-11 1973-05-11 Removal of chloride from crude zinc sulphate solutions Expired GB1371302A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2253273A GB1371302A (en) 1973-05-11 1973-05-11 Removal of chloride from crude zinc sulphate solutions
NL7406225A NL7406225A (en) 1973-05-11 1974-05-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2253273A GB1371302A (en) 1973-05-11 1973-05-11 Removal of chloride from crude zinc sulphate solutions

Publications (1)

Publication Number Publication Date
GB1371302A true GB1371302A (en) 1974-10-23

Family

ID=10180913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2253273A Expired GB1371302A (en) 1973-05-11 1973-05-11 Removal of chloride from crude zinc sulphate solutions

Country Status (2)

Country Link
GB (1) GB1371302A (en)
NL (1) NL7406225A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156711A (en) * 1975-06-19 1979-05-29 Societe Des Mines Et Fonderies De Zinc De La Vieille Montagne, S.A. Process for the removal of impurities contained in a zinc and cadmium sulfate solution
GB2152918A (en) * 1984-01-19 1985-08-14 Cato Research Inc Ammonium chloride-ammonium hydroxide strip for the recovery of anhydrous zinc chloride
US7037482B2 (en) 2003-03-10 2006-05-02 Teck Cominco Metals Ltd. Solvent extraction of a halide from a aqueous sulphate solution

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156711A (en) * 1975-06-19 1979-05-29 Societe Des Mines Et Fonderies De Zinc De La Vieille Montagne, S.A. Process for the removal of impurities contained in a zinc and cadmium sulfate solution
GB2152918A (en) * 1984-01-19 1985-08-14 Cato Research Inc Ammonium chloride-ammonium hydroxide strip for the recovery of anhydrous zinc chloride
US7037482B2 (en) 2003-03-10 2006-05-02 Teck Cominco Metals Ltd. Solvent extraction of a halide from a aqueous sulphate solution

Also Published As

Publication number Publication date
NL7406225A (en) 1974-11-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee