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Gold recovery from refractory carbonaceous ores by pressure oxidation, thiosulfate leaching and resin-in-pulp adsorption

  • US 5,785,736 A
  • Filed: 07/16/1996
  • Issued: 07/28/1998
  • Est. Priority Date: 02/10/1995
  • Status: Expired due to Term
First Claim
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1. A process for recovering gold from a slurry comprising a solid ore residue and a gold-bearing thiosulfate lixiviant comprising:

  • contacting the slurry with an ion exchange resin having affinity for gold to adsorb gold from the gold-bearing thiosulfate lixiviant onto said resin;

    eluting gold from said resin to produce a gold-bearing eluate; and

    recovering gold from the gold-bearing eluate.

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