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| Thermodynamic Analysis of Vacuum Decomposition Process of Molybdenum Concentrate |
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Received:April 02, 2014
Revised:April 10, 2014
Accepted:April 11, 2014
Published Online:September 19, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.10.009 |
| KeyWord:molybdenum concentrate; vacuum decomposition; thermodynamics |
| Author | Institution |
| wanglei |
北京科技大学冶金与生态工程学院 |
| luolingen |
中国钢研科技集团有限公司 低温冶金与资源高效利用中心 |
| guopeimin |
中国钢研科技集团有限公司 低温冶金与资源高效利用中心 |
| pangjianming |
中国钢研科技集团有限公司 低温冶金与资源高效利用中心 |
| zhaopei |
中国钢研科技集团有限公司 低温冶金与资源高效利用中心 |
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| Abstract: |
| Thermal decomposition process of molybdenum concentrate in vacuum was thermodynamically analyzed. The results show that sulfur compounds in molybdenum concentrate can decompose or sublimate under the conditions of temperature of 1 500~1 800 ℃ and furnace pressure of 0.1~100 Pa. Decomposition of MoS2 (main phase of molybdenum concentrate) follows stepwise principle. PbS and As2S3 can directly volatile into gas, but SnS2 and Bi2S3 may decompose and evaporate. It is easy for CuS to decompose to Cu2S, while it is difficult for Cu2S to decompose; which calls for higher temperature and lower pressure. |
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