| PATENT ASSIGNEE'S COUNTRY | South Africa |
| UPDATE | 09.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
(a) Subjecting the sulphide minerals to biol. oxidation in first tank in series of tanks to produce a prodt (b) Separating the prodt into a heavy fraction which contains at least unoxidised minerals & a residual fraction which contains at least oxidised sulphide minerals & prodts of oxidation (c) Recovering said at least one element (Au, Ag & Pt) from the residual fraction (d) Subjecting heavy fraction to further biol. oxidation in the remaining tank or tanks in the series of tanks |
| PATENT PHOTOCOPY | Available on request |
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