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Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (4): 135-138.doi: 10.11872/j.issn.1005-2518.2014.04.135

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Research on Acid Hot-pressure Preoxidation-Cyanidate Process for Refractory Gold Ore

XU Xiaoyang，CAI Chuangkai，DING Wentao   

  1. Xiamen Zijin Mining and Metallurgy Technology Co.，Ltd.，Xiamen    361101，Fujian，China
  • Received:2014-06-15 Revised:2014-07-11 Online:2014-08-28 Published:2014-12-24

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Abstract:

The samples used is a typical refractory gold ore，which containing 14.80×10-6 Au and 0.47% organic carbon，and over 95% gold is of sulfide-inclusion type，and traditional cyanidation leaching rate of gold is only 21.89%.With acid hot-pressure oxidation pretreatment，the influence of pulp density，time，temperature，oxygen partial pressure，rotational speed on cyanidation extraction rate of Au was researched.The results showed that sulfur oxidation rate was more than 98% and the leaching rate of gold was more than 97%.

Key words: refractory gold ore, acid hot-pressure, cyanidate leaching gold

CLC Number: 

  • TF831

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