METHOD OF PROCESSING OF ZINC SEDIMENTS CONTAINING NOBLE METALS

FIELD: metallurgy of noble metals; processing of zinc sediments containing noble metals. SUBSTANCE: the invention is dealt with metallurgy of noble metals, in particular with a pyrometallurgical processing of the zinc sediments containing noble metals. The method of processing of a zinc sediments in...

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Bibliographische Detailangaben
Hauptverfasser:	ERSHOV V.P, KARPUKHIN A.I, MUSIN E.D
Format:	Patent
Sprache:	eng ; rus
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:	FIELD: metallurgy of noble metals; processing of zinc sediments containing noble metals. SUBSTANCE: the invention is dealt with metallurgy of noble metals, in particular with a pyrometallurgical processing of the zinc sediments containing noble metals. The method of processing of a zinc sediments includes a sintering and a smelt of the produced product. The new thing in the process is the fact, that the sintering is conducted with addition of alkali at the temperature of 500-550oC, and the produced product is smelted with addition of borax and calcium fluoride. The technical result is an increase of a degree of extraction of gold and silver in the main product and selectivity of the process due to an increase of a degree of slagging of ignoble impurities. EFFECT: increased extraction of gold and silver in the main product and selectivity of the process. 2 cl, 3 tbl, 1 ex