| 富银锰结核银锰分离的试验研究 |
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| 引用本文： | 丁先胜,徐本军,徐育,肖臻.富银锰结核银锰分离的试验研究[J].矿冶工程,2012,32(6):90-92. |
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| 作者姓名： | 丁先胜 徐本军 徐育 肖臻 |
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| 作者单位： | 贵州大学 材料与冶金学院, 贵州 贵阳 550003 |
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| 摘 要： | 以复合还原剂A+B作为还原剂在硫酸介质下对富银锰结核进行浸出研究。考察了硫酸用量、液固比和反应时间对浸出结果的影响, 并对浸出机理进行了探讨。得到最佳的Mn、Ag分离条件为: 硫酸35 mL/100 g矿、液固比3∶1、反应时间4 h。在此浸出条件下, 锰的浸出率达到90%以上, 银的品位从原矿中274 g/t提高到浸出渣中700 g/t, 且银的回收率达到95%以上。
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| 关 键 词： | 富银锰结核 复合还原剂 银锰分离 |
| 收稿时间： | 2012-06-10 |
Research on Separating Ag and Mn from Silver-rich Manganese Nodules |
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| DING Xian-sheng,XU Ben-jun,XU Yu,XIAO Zhen.Research on Separating Ag and Mn from Silver-rich Manganese Nodules[J].Mining and Metallurgical Engineering,2012,32(6):90-92. |
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| Authors: | DING Xian-sheng XU Ben-jun XU Yu XIAO Zhen |
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| Affiliation: | College of Materials and Metallurgy, Guizhou University, Guiyang 550003, Guizhou, China |
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| Abstract: | Experiment was conducted on the leaching of silver-rich manganese nodules in sulfuric acid medium by using compound reducing agent A+B as reductant. The effects of sulfuric acid consumption, L/S ratio and reaction time on leaching results were investigated, and the leaching mechanism was also discussed. The optimum conditions for separating Mn and Ag were obtained as follows: 35 mL sulfuric acid per 100 g ore, L/S ratio of 3∶1 and reaction time of 4 hours. Under such conditions, the leaching rate of manganese reached above 90%, and the grade of silver improved from 274 g/t in the original ore to 700 g/t in the leaching residue with silver recovery rate reaching above 95%. |
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| Keywords: | silver-rich manganese nodules compound reducing agent separation of Ag and Mn |
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