METHOD FOR EXTRACTING OF METALS FROM CHLORIDE SOLUTIONS

A method for the recovery of metals, generally heavy metals or chelatable metals such as zinc or copper from chloride solutions such as acid chloride etching solutions comprises extracting the metal with a mixed extracting agent of anion exchange/chelating, solvating/cation exchange or anion exchang...

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Bibliographische Detailangaben
Hauptverfasser:	KJUCHUKOV, GEORGI D, FLETCHER, ARCHIBALD W, BOJADZHIEV, LJUBOMIR A, MIKHAJLOV, INDZHE O, ELENKOV, DIMITAR G
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	A method for the recovery of metals, generally heavy metals or chelatable metals such as zinc or copper from chloride solutions such as acid chloride etching solutions comprises extracting the metal with a mixed extracting agent of anion exchange/chelating, solvating/cation exchange or anion exchange/cation exchange character, separating the organic phase washing it with water, aqueous ammonia or aqueous ammoniacal ammonium sulphate, stripping the metal from the organic phase thereby obtained by contacting it with sulphuric acid and returning the organic phase to the extraction stage for reuse after regenerating it.