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J4 ›› 2004, Vol. 12 ›› Issue (2): 35-40.

• article • Previous Articles     Next Articles

Gold Extraction From a Refractory Concentrate Containing High As

FANG Zhaoheng,XIA Guanxiang   

  1. Institute of process engineering,Chinese Academy of Science,Beijing,100080
  • Received:2003-11-27 Revised:2003-12-01 Online:2004-04-28 Published:2011-09-15

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Abstract:

An invented process for gold extraction from an arsenic refractory concentrate was proposed and investigated.The concentrate contained high arsenic as 22%.This concentrate was pre-treated under oxygen pressures with HNO3 as catalyzer in HSO4 solutions.The factors that affected on the pre-treating process were tested,and the optimum technologic conditions were determined.A gold extractive technology was proposed to deal this concentrate. 94%～96% extraction was achieved under optimized conditions in laboratory tests.

Key words: a refractory concentrate containing high As, pre-treated under oxygen pressures

CLC Number: 

  • TF831

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