|
| Tellurium Alkali Leaching from Venturi Sludge and Tellurium Dioxide Preparation |
|
Received:July 28, 2015
Revised:July 28, 2015
Accepted:July 31, 2015
Published Online:December 24, 2015
|
| View Full Text View/Add Comment Download reader |
| DOI：10.3969/j.issn.1007-7545.2016.01.012 |
| KeyWord:Venturi sludge; tellurium; extraction |
| Author | Institution |
| ZHANG Huanran |
紫金矿业集团股份有限公司 |
| ZHONG Shuiping |
紫金矿业集团股份有限公司 |
| LIU Jianqiang |
紫金铜业有限公司;紫金铜业有限公司 |
| LIU Xiaoying |
紫金矿业集团股份有限公司 |
|
| Hits: 2080 |
| Download times: 1956 |
| Abstract: |
| Effects of sodium hydroxide concentration, ratio of liquid to solid, leaching temperature, and leaching duration on leaching rates of tellurium, lead, and selenium from Venturi sludge were investigated. The results show that leaching rate of tellurium, lead, and selenium is 94.7%, 39.9% and 20.5% respectively under the optimum conditions including sodium hydroxide concentration of 100 g/L, ratio of liquid to solid of 5, leaching temperature of 60 ℃, and leaching duration of 1 h. Lead extraction is effectively inhibited by two-stage leaching. Tellurium dioxide with TeO2 content of 98.5% above is prepared from secondary leaching lixivium by adding sulfide to remove lead and acidification to precipitate tellurium. |
| Close |
|
|
|