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Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (6): 55-59.doi: 10.11872/j.issn.1005-2518.2014.06.055

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The Practice of Improving the Gold Concentrate Grade by Middling Regrinding and Process Reformation

WANG Hu，LIU Yang，QIN Xiangwei，QI Chuanduo   

  1. Sanshandao Gold Mine，Shandong Gold Mining （Laizhou） Co.，Ltd.，Laizhou   261400，Shandong，China
  • Received:2014-08-27 Revised:2014-10-02 Online:2014-12-28 Published:2015-01-14

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Abstract:

The premise of beneficiation is to completely separate target minerals from gangue minerals，so the proportion of intergrowth minerals has an important influence on the beneficiation indexes.Without increasing investment，it can reach the goals of fully disintegrating，lowing the level of intergrowth and improving the floatability of target minerals by reforming process and regrinding middling（roughing and scavenging concentrates）during the full process.Field practice showed that after  process Reformation，the concentrate grade had increased from 37×10-6 to 45×10-6，the god recovery rate was risen by 0.6%，and economic benefits amounted to 11 974 thousand Yuan per year.

Key words: process Reformation, middling Regrinding, recovery rate, intergrowth, economic benefits

CLC Number: 

  • TD952

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