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Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (4): 124-128.doi: 10.11872/j.issn.1005-2518.2014.04.124

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Research on Technology of Recovering Gold from Carbonaceous Arsenic-bearing Gold Ores in Southwestern Guizhou

CAI Chuangkai   

  1. Xiamen Zijin Mining & Metallurgy Technology Co.，Ltd.，Xiamen   361101，Fujian，China
  • Received:2014-05-15 Revised:2014-06-20 Online:2014-08-28 Published:2014-12-24

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Abstract:

The samples were collected from a gold mine in southwest of Guizhou Province，which are all of the typical of low-grade refractory gold ore containing 1.97×10-6 Au，1.27%As and 1.62% organic carbon.The leaching rate of gold by cyanidation is lower than 3%.Reseasch on CIL，kerosene masking，hypochlorite pretreatment，microwave pretreatment was carried out to study the effect of leaching gold.The leaching rate of gold by CIL is 17.26%.By adding kerosene to grinding，cyanidation leaching rate of gold can be increased to 41%~42%.And the results of hypochlorite leaching are not good.The third process，microwave pretreatment achieve better results.After microwave pretreatment，the leaching rate of gold by cyanidation can be increased to over 82%，but need to add some special agents to the ore.

Key words: carbonaceous gold ore, microwave roasting method, kerosene masking gold extraction process, pretreatment

CLC Number: 

  • TF831

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