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黄金科学技术 ›› 2012, Vol. 20 ›› Issue (5): 71-73.

• 技术前沿 • 上一篇    下一篇

磨矿细度和二浸二洗对氰化浸出率影响的试验研究

拜鹏程1,何烨1,陈芳芳2,李科科2   

  1. 1.湖南中南黄金冶炼有限公司,湖南  平江   414507;
    2.中国科学院过程工程研究所,绿色过程与工程重点实验室,湿法冶金清洁生产技术国家工程实验室,北京   100190
  • 收稿日期:2012-04-25 修回日期:2012-07-26 出版日期:2012-10-29 发布日期:2013-04-03
  • 作者简介:拜鹏程(1968-),男,陕西潼关人,工程师,从事有色金属冶炼研究工作.bpc226@163.com
  • 基金资助:

    国家环境保护部重大专项项目“水体污染控制与治理技术评估体系研究”(编号:2009ZX07529-005)资助.

Experimental Study on Cyanide Leaching Efficiency Influenced by Fineness of Grinding and Secondary Grinding and Leaching

BAI Pengcheng1,HE Ye1,CHEN Fangfang2,LI Keke2   

  1. 1.Hunan Central South Gold Smelting Limited Company,Pingjiang   414507,Hunan,China;
    2.Key Laboratory Green Process and Engineering,National Engineering Laboratory for Hydrometallurgical Cleaner ProductionTechnology,Institute of Process and Engineering,Chinese Academy of Sciences,Beijing,   100190,China
  • Received:2012-04-25 Revised:2012-07-26 Online:2012-10-29 Published:2013-04-03

摘要:

以某黄金冶炼企业的酸洗渣为原料,针对磨矿细度和二浸二洗对该酸洗渣氰化浸出率的影响进行了试验研究,以确定该酸洗渣的最佳氰化浸出流程及浸出条件。本次研究共进行了5组平行试验,结果表明,磨矿细度达到-325目且>90%时,浸出效果最好,一浸一洗即可达良好的浸出效果,金浸出率可达72%以上,二浸二洗对浸出率的提高无明显效果。试验结果发现,在浸出过程中,采取磨矿细度-325目且>90%,一浸一洗的浸出流程即可达到最佳效果。

关键词: 磨矿细度, 二浸二洗, 金浸出率

Abstract:

Using a kind of acid slag from a gold smelting industry as raw material,cyanide leaching efficiency influenced by fineness of grinding and secondary grinding and leaching was investigated in order to get the optimum cyanide leaching process and leaching conditions.Five parallel trials were conducted.The results showed that the best leaching efficiency would be obtained under grinding fineness of -0.0450 mm above 90%.Good leaching efficiency could be over 72% under primary grinding and leaching,and it would not be obviously improved under secondary grinding and leaching.In summary,optimum leaching effect could be obtained under grinding fineness of -0.0450 mm above 90% and primary grinding and leaching in the process of leaching.

Key words: Grinding fineness, Secondary grinding and leaching, Gold leaching efficiency

中图分类号: 

  • P617.9

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