| 某难冶型金精矿生物氧化与热压氧化工艺对比 |
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| 引用本文： | 邢晴晴.某难冶型金精矿生物氧化与热压氧化工艺对比[J].有色金属(冶炼部分),2019(12):49-54. |
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| 作者姓名： | 邢晴晴 |
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| 作者单位： | ;1.青海省金矿资源开发工程技术研究中心;2.都兰金辉矿业有限公司 |
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| 基金项目： | 青海省重点研发与转化计划项目（2019-SF-139） |
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| 摘 要： | 某高砷、高碳、贫硫、微细粒难浸型金精矿直接氰化浸出金的浸出率仅为42%左右。采用"生物预氧化—氰化浸出"工艺,金浸出率达到96.3%,采用"中温中压预氧化—三段氰化浸出"工艺,金浸出率达到99.66%。并对生物氧化、热压氧化、焙烧氧化3种预处理工艺进行了对比分析,结果表明,与热压氧化、焙烧氧化相比较,细菌氧化工艺投资少、成本低,且金、银回收指标较高,经济效益较好。
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| 关 键 词： | 砷 碳 难处理金精矿 生物氧化 热压氧化 |
| 收稿时间： | 2019/8/2 0:00:00 |
| 修稿时间： | 2019/8/28 0:00:00 |
Process Comparison of Biological Oxidation and Thermal Compression Oxidation for Refractory Gold Concentrate |
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| Xing Qingqing.Process Comparison of Biological Oxidation and Thermal Compression Oxidation for Refractory Gold Concentrate[J].Nonferrous Metals(Extractive Metallurgy),2019(12):49-54. |
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| Authors: | Xing Qingqing |
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| Affiliation: | The Engineering and Technology Research Center for the Development of Gold mining Resources in Qinghai province |
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| Abstract: | Directly cyanide leaching rate of refractory gold concentrate of high arsenic and carbon, poor sulfur, and fine grain is only about 42%. Gold leaching rate is 96.3% by adopting biological pre-oxidation and cyanide leaching process. Gold leaching rate is 99.66% by adopting pre-oxidation at medium temperature and pressure, and three-stage cyanide leaching process. Three pretreatment processes of biological oxidation, hot compression oxidation and roasting oxidation are compared and analyzed. The results show that biological oxidation process has the advantages of low investment, low cost, high recovery rate of gold and silver, and good economic benefit. |
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| Keywords: | arsenic carbon refractory gold concentrate biological oxidation hot press oxidation |
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