| 高砷难处理金矿的提金工艺研究 |
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| 引用本文： | 方兆珩,夏光祥.高砷难处理金矿的提金工艺研究[J].黄金科学技术,2004,12(2):35-40. |
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| 作者姓名： | 方兆珩 夏光祥 |
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| 作者单位： | 中国科学院过程工程研究所,北京,100080;中国科学院过程工程研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金资助项目(59974025) |
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| 摘 要： | 论述了一种高砷难处理金精矿的提金工艺,这种金精矿的直接氰化率仅为34%。实验确定了硝酸催化氧化预处理该精矿时各主要影响因子的作用规律,确定了优化操作条件,提出了硝酸氧化浸出-炭浆氰化-氰渣浮选的原则工艺流程。实验室条件下,利用这一流程处理这一高砷金精矿,可使金的氰化回收率提高到94%～96%。
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| 关 键 词： | 高砷难处理金精矿 催化氧化预处理 石灰液氧化脱硫 氰渣浮选 |
| 文章编号： | 1005-2518(2004)02-0035-06 |
| 收稿时间： | 2003-11-27 |
| 修稿时间： | 2003年11月27 |
Gold Extraction From a Refractory Concentrate Containing High As |
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| FANG Zhao-heng,XIA Guan-xiang.Gold Extraction From a Refractory Concentrate Containing High As[J].Gold Science and Technololgy,2004,12(2):35-40. |
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| Authors: | FANG Zhao-heng XIA Guan-xiang |
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| Affiliation: | Institute of process engineering,Chinese Academy of Science,Beijing,100080 |
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| Abstract: | An invented process for gold extraction from an arsenic refractory concentrate was proposed and investigated.The concentrate contained high arsenic as 22%.This concentrate was pre-treated under oxygen pressures with HNO3 as catalyzer in HSO4 solutions.The factors that affected on the pre-treating process were tested,and the optimum technologic conditions were determined.A gold extractive technology was proposed to deal this concentrate. 94%～96% extraction was achieved under optimized conditions in laboratory tests. |
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| Keywords: | a refractory concentrate containing high As pre-treated under oxygen pressures |
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