Method of removal of impurities from gold concentrate...

Details Method of removal of impurities from gold concentrate... Method of removal of impurities from gold concentrate...

2005-03-01

2005-03-01

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group va metal or arsenic

C423S509000, C423S510000

Reexamination Certificate

active

06861037

ABSTRACT:
The present invention focuses on the method for the removal of impurities, such as tellurium and bismuth, from gold concentrate containing sulfides. According to the present method, the impurities are leached from the gold concentrate with the aid of an acidic aqueous solution, at an elevated temperature, whereby the impurities dissolve and the gold remains in the concentrate.

REFERENCES:
patent: 589959 (1897-09-01), Crooke
patent: 2835569 (1958-05-01), Reynaud et al.
patent: 3545964 (1970-12-01), Hansen et al.
patent: 4342591 (1982-08-01), Lesoille
patent: 4615731 (1986-10-01), Thomas et al.
patent: 4786323 (1988-11-01), Gock et al.

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