A primary study of simultaneous leaching of silver containing manganese ore and a sphalerite concentrate |
| |
Authors: | Li Zhizhang and Li Yanjun |
| |
Institution: | [1]Mineral Department, Kunming University of Science and Technology, Kunming 650093, China; [2]Medicine Department ,Dali University, Dali, Yunnan 650071, China |
| |
Abstract: | It is demonstrated that a low grade, silver containing manganese deposit can be exploited by reaction with a ZnS concentrate. In the process, Mn(IV) is reduced to Mn(II) and the ZnS converted to ZnSO4. In the process, Mn and Zn are solubilized. By studying the effects of quantity of reducing agent and sulfuric acid added and of time, temperature and liquid to solid ratio on the leaching process, the optimum technological conditions have been achieved under which the amount of manganese leached was 98 %. The silver can be removed from remaining solids by adding ammonia liquor. Then by adding hydrazine hydrate, sponge silver with purity up to 99 % can be obtained with a recovery of 87 %. |
| |
Keywords: | silver manganese sphalerite reduction leaching |
本文献已被 维普 等数据库收录! |
| 点击此处可从《工程科学》浏览原始摘要信息 |
| 点击此处可从《工程科学》下载免费的PDF全文 |
|