OXIDATION OF METAL SULFIDES USING THERMOTOLERANT BACTERIA

PCT No. PCT/AU92/00117 Sec. 371 Date Nov. 15, 1993 Sec. 102(e) Date Nov. 15, 1993 PCT Filed Mar. 20, 1992 PCT Pub. No. WO92/16667 PCT Pub. Date Oct. 1, 1992.A process for recovering precious or base metals from particulate refractory sulfide materials comprises: a) contacting the sulfide material wi...

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Bibliographic Details
Main Authors POOLE, ROBERT K, SPENCER, PETER A, BARRETT, JACK, BUDDEN, JULIA R, HUGHES, MARTIN N
Format Patent
LanguageEnglish
Published 29.11.1996
Edition6
Subjects
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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Summary:PCT No. PCT/AU92/00117 Sec. 371 Date Nov. 15, 1993 Sec. 102(e) Date Nov. 15, 1993 PCT Filed Mar. 20, 1992 PCT Pub. No. WO92/16667 PCT Pub. Date Oct. 1, 1992.A process for recovering precious or base metals from particulate refractory sulfide materials comprises: a) contacting the sulfide material with an aqueous solution containing a thermotolerant bacteria culture capable of promoting oxidation of the sulfide material at a temperature in the range from 25 DEG to 55 DEG C., b) separating the oxidized residue from the aqueous liquid, and, c) treating the oxidized residue and/or the aqueous liquid to recover metal. In this context, a thermotolerant bacterium is one which has an optimum growth temperature of 40 DEG to 45 DEG C., and an operating temperature of 25 DEG to 55 DEG C.
Bibliography:Application Number: BG19930098117