| 某微细粒砷黄铁矿包裹金矿的非氰浸出研究 |
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| 引用本文： | 孟宇群,代淑娟,宿少玲,沈海涛.某微细粒砷黄铁矿包裹金矿的非氰浸出研究[J].贵金属,2019,40(3):33-38, 42. |
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| 作者姓名： | 孟宇群 代淑娟 宿少玲 沈海涛 |
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| 作者单位： | 中国科学院金属研究所,沈阳,110016;辽宁科技大学矿业工程学院,辽宁鞍山,114051 |
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| 基金项目： | 国家自然科学基金项目(51574146) |
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| 摘 要： | 采用非氰浸化剂(石硫合剂)对含金为2.47 g/t的甘肃某微细粒砷黄铁矿包裹金矿进行浸出试验，研究预处理方式和浸出工艺对金浸出率的影响。结果表明，石硫合剂对金的直接搅拌浸出率低于30%，该矿属难浸金矿石；采用边磨边浸-搅拌浸出的方式，浸出率可提升至68.4%；增加碱式预氧化处理，可将金的浸出率进一步提升到80%以上。采用最优的工艺，边磨边碱式预氧化36 h，经石硫合剂搅拌浸出5 h，金的浸出率可达到91.5%。
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| 关 键 词： | 有色金属冶金 难浸金矿 非氰浸出 边磨边浸 预氧化 |
| 收稿时间： | 2018/12/13 0:00:00 |
Study on Non-cyanide Extraction for a Ore Micro-fine Gold Enclosed by Arsenopyrite |
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| MENG Yuqun,DAI Shujuan,SU Shaoling and SHEN Haitao.Study on Non-cyanide Extraction for a Ore Micro-fine Gold Enclosed by Arsenopyrite[J].Precious Metals,2019,40(3):33-38, 42. |
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| Authors: | MENG Yuqun DAI Shujuan SU Shaoling and SHEN Haitao |
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| Affiliation: | Institute of Metal Research, Chinese Academy of Sciences, Shengyang 110016, China,School of Mining Engineering, Liaoning University of Science and Technology, Anshan 114051, Liaoning, China,Institute of Metal Research, Chinese Academy of Sciences, Shengyang 110016, China and Institute of Metal Research, Chinese Academy of Sciences, Shengyang 110016, China |
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| Abstract: | The effect of pre-oxidation and leaching technology on leaching rate of gold was studied by using lime sulfur agent as extraction agent to leach a micro-arsenopyrite coated gold ore with a gold content of 2.47 g/t in Gansu province. The results showed that direct agitation leaching rate of gold was less to 30% by lime sulfur agent. The ore was refractory gold ore. The leaching rate of gold was improved to 68.4% by stirring-grinding-leaching method. The extraction rate of gold was enhanced to over 80% by adding alkaline pre-oxidation treatment. The leaching rate of gold was 91.5% by alkaline pre-oxidation for 36 h and grinding-leaching for 5 h using lime sulfur agent. |
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| Keywords: | nonferrous metallurgy refractory gold ore non-cyanide leaching leaching-grinding pre-oxidation |
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