METHOD FOR RECOVERING PRECIOUS METAL

A method for recovering precious metal from an acidic aqueous solution containing dissolved precious metal and free chlorine, comprising the following successive steps:(1) combining a salt of a non-precious metal present in a low oxidation state as a solid or as an aqueous solution with the acidic a...

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Bibliographische Detailangaben
1. Verfasser:	STEMMLER, Marco
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A method for recovering precious metal from an acidic aqueous solution containing dissolved precious metal and free chlorine, comprising the following successive steps:(1) combining a salt of a non-precious metal present in a low oxidation state as a solid or as an aqueous solution with the acidic aqueous solution to consume the free chlorine and form an acidic aqueous mixture, and(2) adding non-precious metal to the acidic aqueous mixture formed in step (1) to precipitate elementary precious metal.