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| New Process for Molybdenum and Tungsten Extraction from High Pressure Alkaline Leaching Solution |
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Received:March 09, 2012
Revised:March 09, 2012
Accepted:May 03, 2012
Published Online:September 19, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.10.009 |
| KeyWord:high pressure leaching solution; molybdenum; tungsten; ammonium molybdate-tungstate |
| Author | Institution |
| caoyaohua |
中国地质科学院郑州矿产综合利用研究所 |
| liuhongzhao |
中国地质科学院郑州矿产综合利用研究所 |
| gaozhaoguo |
中国地质科学院郑州矿产综合利用研究所 |
| yangshaowen |
中国地质科学院郑州矿产综合利用研究所 |
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| Abstract: |
| According to the characteristics of high tungsten and molybdenum content in the high pressure leaching solution of tungsten and molybdenum oxide rough concentrate, a new process for molybdenum-tungsten extraction was adopted including purification with magnesium salt, molybdenum-tungsten co-precipitation, drying, preparation of ammonium molybdate-tungstate. The effects of ammonium chloride dosage, precipitation time, pH, temperature, and solution concentration on molybdenum precipitation rate were investigated. The results show that the final products, i.e., ammonium molybdate-tungstate, contain 47.57% Mo and 10.13% WO3, respectively, and the impurities of phosphorus and arsenic are 0.0027% and 0.041%, respectively. This product meets requirement of molybdenum-tungsten alloy production. |
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