| 高砷难处理硫精矿氰化浸出提银实验研究 |
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| 引用本文： | 胡杨甲,贺 政,赵志强,罗思岗. 高砷难处理硫精矿氰化浸出提银实验研究[J]. 贵金属, 2015, 36(3): 14-18 |
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| 作者姓名： | 胡杨甲 贺 政 赵志强 罗思岗 |
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| 作者单位： | 北京矿冶研究总院 矿物加工科学与技术国家重点实验室，北京 100160,北京矿冶研究总院 矿物加工科学与技术国家重点实验室，北京 100160,北京矿冶研究总院 矿物加工科学与技术国家重点实验室，北京 100160,北京矿冶研究总院 矿物加工科学与技术国家重点实验室，北京 100160 |
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| 摘 要： | 某硫精矿中的银矿物嵌布粒度非常细小,包裹于硫化物中的银约占50.46%,属于难处理高砷含银硫精矿。采用细磨后化学预处理氰化浸出,银浸出率仍然低于80%;硫精矿经氧化焙烧后,As、S的脱除率都达到90%以上,但银浸出率却较低;对该含银硫精矿添加钠盐焙烧预处理,再采用常规氰化法浸出,银浸出率显著提高,达到85.15%,同时氰化钠耗量降低至2.0 kg/t。
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| 关 键 词： | 有色金属冶金；高砷；难处理；硫精矿；氰化浸出；提银 |
| 收稿时间： | 2015-01-22 |
Study on the Extraction of Silver from High Arsenic Refractory Sulfur Concentrate |
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| HU Yangji,HE Zheng,ZHAO Zhiqiang and LUO Sigang. Study on the Extraction of Silver from High Arsenic Refractory Sulfur Concentrate[J]. Precious Metals, 2015, 36(3): 14-18 |
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| Authors: | HU Yangji HE Zheng ZHAO Zhiqiang LUO Sigang |
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| Affiliation: | State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining & Metallurgy, Beijing 100160, China,State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining & Metallurgy, Beijing 100160, China,State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining & Metallurgy, Beijing 100160, China and State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining & Metallurgy, Beijing 100160, China |
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| Abstract: | The silver bearing sulfur concentrate is refractory one due to its high arsenic and its fine silver minerals. The cyanidation leaching rate of silver was low (<80%) despite the sulfur concentrate was treated by fine grinding and chemical reagent. After oxidation roasting, the removal rates of As and S in concentrate reached 90% above, however the leaching rate was still low. The leaching rate was significantly improved when the concentrate was roasted by adding NaXY. The leaching rate can reach 85.15% and the consumption of NaCN reduced to 2.0 kg/t. |
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| Keywords: | nonferrous metals metallurgy high arsenic refractory sulfur concentrate cyanidation leaching extraction of silver |
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