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| 高砷难处理硫精矿氰化浸出提银实验研究 |
| Study on the Extraction of Silver from High Arsenic Refractory Sulfur Concentrate |
| Received:January 22, 2015 |
| DOI： |
| 中文关键词: 有色金属冶金 高砷 难处理 硫精矿 氰化浸出 提银 |
| 英文关键词: nonferrous metals metallurgy high arsenic refractory sulfur concentrate cyanidation leaching extraction of silver |
| 基金项目: |
| Author Name | Affiliation | E-mail | | HU Yangjia | State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining &
Metallurgy, Beijing 100160, China | ajia216@163.com | | HE Zheng | State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining &
Metallurgy, Beijing 100160, China | | | ZHAO Zhiqiang | State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining &
Metallurgy, Beijing 100160, China | | | LUO Sigang | State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining &
Metallurgy, Beijing 100160, China | |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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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