Abstract
A novel process that the combination of vacuum decomposition and acid leaching was proposed. The influence of distillation times, diameter and thickness of the feeding material on the mass fraction of Molybdenum (Mo) and sulphur (S) in residual was investigated. The influence of leaching temperature, leaching time, concentration of hydrochloric acid solution, and ratio of liquid to solid on leaching rates of Mo and S in acid leaching process was also investigated. Due to the fact that SO2 emission happening in the long process of traditional molybdenum metallurgy could be avoided in this novel method, this combination process was environmentally-friendly. Molybdenum powder was obtained through handling molybdenite concentrate under the optimal condition parameters, and the mass fraction of Mo reached 98.29 wt%. So it’s feasible to produce molybdenum powder from molybdenite concentrate by using this new method.
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Acknowledgements
The authors acknowledge the financial support from National Natural Science Foundation of China (NO. U1202271), the Program for Innovative Research Team in University of Ministry of Education of China (NO. IRT1250), and the Program for Innovative Research Team in Nonferrous Metal Vacuum Metallurgy of Ministry of Science and Technology (Grant No. 2014RA4018), and the Cultivating Plan Program for the Technological Leading Talents of Yunnan Province (2014HA003).
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© 2017 The Minerals, Metals & Materials Society
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Yang, C., Zhou, Y., Liu, D., Jiang, W., Liu, F., Liu, Z. (2017). Preparation of Molybdenum Powder from Molybdenite Concentrate Through Vacuum Decomposition-Acid Leaching Combination Process. In: Kim, H., Alam, S., Neelameggham, N., Oosterhof, H., Ouchi, T., Guan, X. (eds) Rare Metal Technology 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51085-9_25
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DOI: https://doi.org/10.1007/978-3-319-51085-9_25
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