Current Developments in the Hydrometallurgical Treatment of ...
Current Developments in the Hydrometallurgical Treatment of ...
Current Developments in the Hydrometallurgical Treatment of ...
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<strong>Current</strong> <strong>Developments</strong> <strong>in</strong> <strong>the</strong> <strong>Hydrometallurgical</strong><strong>Treatment</strong> <strong>of</strong> Copper Ores and ConcentratesAutoclave Leach<strong>in</strong>g Precious MetalsGold Oxidation/Chlorocomplex Formation:Au + 0.75O 2 + 4HCl = HAuCl 4 + 1.5H 2 OPlat<strong>in</strong>um Oxidation/ChlorocomplexFormation:Pt + O 2 + 6HCl = H 2 PtCl 6 + 2H 2 OPalladium Oxidation/ChlorocomplexFormation:Pd + 0.5O 2 + 4HCl = H 2 PdCl 4 + H 2 OTemperature <strong>of</strong> 220 to 230 C.
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