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| 从难处理金精矿中氰化浸出金、银试验研究 | |
| 引用本文： | 王瑞祥,曾斌,余攀,王志刚,阮建国,谢博毅.从难处理金精矿中氰化浸出金、银试验研究[J].黄金,2013(8):53-55. |
| 作者姓名： | 王瑞祥 曾斌 余攀 王志刚 阮建国 谢博毅 |
| 作者单位： | 1. 江西理工大学冶金与化学工程学院; 中国瑞林工程技术有限公司 2. 江西理工大学冶金与化学工程学院 3. 中国瑞林工程技术有限公司 |
| 基金项目： | 国家自然科学基金资助项目(51164011)；福建省区域科技重大合作项目(2011H4025)；国家高技术研究发展计划(863计划) |
| 摘 要： | 采用氰化浸出工艺从预处理后的难处理金精矿中提取金、银。最佳氰化浸出条件为：液固比4：1，保护碱Na2CO3调节pH值9．5～10．5，氰化钠质量分数0．4％，氰化浸出96h。在此条件下，金、银浸出率分别达到96．53％、75．37％。同时，探索了复合保护碱对金、银浸出率的影响，使用复合保护碱m（Na2CO3）：m（NaOH）=3：1，金、银的浸出率分别达97．36％、75．59％，比采用单一保护碱Na2CO3时分别提高0．83％和0．22％。 |
| 关 键 词： | 难处理金精矿 氰化浸出 保护碱 |
Experimental research on gold and silver extraction from refractory gold concentrates |
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| Wang Ruixiang , Zeng Bin , Yu Pan , Wang Zhigang , Ruan Jianguo , Xie Boyi.Experimental research on gold and silver extraction from refractory gold concentrates[J].Gold,2013(8):53-55. | |
| Authors: | Wang Ruixiang Zeng Bin Yu Pan Wang Zhigang Ruan Jianguo Xie Boyi |
| Affiliation: | 1. School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology; 2. China Nerin Engineering Company Limited) |
| Abstract: | Gold and silver were extracted from the pretreated refractory gold concentrate by cyanide process. Un- der the optimum cyanidate conditions which are the concentration of sodium cyanide of 4 % ,the liquid to solid ratio of 4： 1, and the adjusted pH with Na2 CO3 of 9.5 - 10.5 and the leaching time of 96 h, leaching rate of gold and silver re- spectively reaches 96.53 % and 75.37 %. The effect of complex protective alkali on the leaching rate of gold and sil- ver was investigated. The influence of complex protection with alkali m（ Na2CO3 ）： m（NaOH） = 3：1 on the leaching rate is explored. The results show that leaching rate of gold and silver respectively were 97.36 % and 75.59 %, which is 0.83 % and 0.22 % higher than using Na2CO3 as single protective alkali. |
| Keywords: | refractory gold concentrate cyanide leaching protective alkali |
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