C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 11/00 (2006.01) C22B 3/10 (2006.01)
Patent
CA 2381679
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.
La présente invention concerne principalement l'élimination d'impuretés telles que le tellure et le bismuth dans un concentré d'or contenant des sulfures. Selon la présente invention, on chasse les impuretés du concentré d'or par lixivation au moyen d'une solution aqueuse acide à température élevée de façon à dissoudre ces impuretés, l'or subsistant dans le concentré.
Hyvarinen Olli
Leimala Raimo
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Outokumpu Oyj
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