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| Study on Separation of Tungsten by Alkali Fusing-Water Leaching |
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Received:November 14, 2013
Revised:November 20, 2013
Accepted:November 22, 2013
Published Online:April 22, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.05.009 |
| KeyWord:alkali fusing; seperation; tungsten; roasting; water leaching |
| Author | Institution |
| DU Yang |
西安建筑科技大学 材料与矿资学院 |
| MA Guang |
西北有色金属研究院 |
| WU Xian |
西北有色金属研究院 |
| CAO Qi-gao |
西北有色金属研究院 |
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| Abstract: |
| Tungsten was recovered from acid leaching residue bearing 47.14% tungsten by alkali fusion and water leaching. The effects of roasting temperature, roasting time, and dosage of sodium hydroxide on tungsten recovery were investigated. The results show that tungsten recovery rate is 99.35% under the optimum conditions including roasting temperature of 700 ℃, roasting time of 40 min, ratio of slag, NaOH and Na2CO3 of 10∶5∶3. |
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