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Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (1): 87-91.doi: 10.3969/j.issn.1005-2518.2014.01.087

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Comprehensive Recovery Experiments on the Valuable Mineral from Low Grade Gold Ore in Gansu Province

ZHANG Zhilei1，LI Yong2，YANG Yongwen1   

  1. 1.Jinchiling Gold Mine，Shandong Zhaojin Mining Industry Co.，Ltd.，Zhaoyuan   265400，Shandong，China；
    2.Qinghai Institute of Salt Lakes，Chinese Academy of Sciences，Xining   810000，Qinghai，China
  • Received:2013-08-27 Revised:2013-10-14 Online:2014-02-28 Published:2014-06-25

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Abstract:

In order to improve the mineral recovery rate of a gold mine in Gansu Province，two technology schemes were applied to processing ores which include the flotation-concentrate cyaniding and the all slime cyaniding.By comparing the overall metallurgical recoveries of them，the technology schemes of flotation and concentrate was ultimately determined，which have been considered from the aspects of technical and economic.The tests show that under the premise of ensuring the total flotation time in 20 minutes，the slurry concentration of 33% and the grinding fineness -200 above 55% were set at the production site.The pharmacy conditions also was butyl xanthate 100 g/t and butyl aerofloat 80 g/t.And the concentrate cyaniding conditions should be kept at the mesh fineness -400 above 90%，the cyanide concentration of 65‰，the cyanide leaching time of 36 hours，and the slurry concentration of 30% to 35%.Finally，it can obtain good indicators of the cyanide overall recovery of 95.43%.

Key words: low grade gold ore, all slime cyaniding, flotation and concentrate cyaniding, Gansu Province

CLC Number: 

  • TD953

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