METHOD OF PROCESSING OF ZINC SEDIMENTS CONTAINING NOBLE METALS Russian patent published in 2004 - IPC

Abstract RU 2227168 C2

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 500-550^oC, 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

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RU 2 227 168 C2

Authors

Karpukhin A.I.

Ershov V.P.

Musin E.D.

Dates

2004-04-20—Published

2002-07-01—Filed