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Molybdenum recovery from oxygen pressure water leaching residue of Ni–Mo ore

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Abstract

This article investigated molybdenum recovery from oxygen pressure water leaching residue of Ni–Mo ore using alkaline leaching, followed by chemical treatment of leach liquor. Parameters affecting Mo leaching rate, such as sodium hydroxide concentration, reaction time, a liquid-to-solid ratio, and temperature for the preliminary alkaline leaching were experimentally determined. The results showed that more than 88 % of molybdenum was leached under the optimum conditions (2.5 ml·g−1 NaOH, 80 °C, a liquid to solid ratio 3 ml·g−1, and reaction time 3 h). After the purification of leach liquor, a CaMoO4 product of 99.2 % purity could be obtained by CaCl2 precipitation method. The whole Mo recovery reached about 82.7 %.

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Acknowledgments

This study was financially supported by the National High Technology Research and Development Program of China (No. 2009AA06Z106), and Yunnan Provincial Science and Technology Department of China (No. 2011GA004).

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Authors and Affiliations

  1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China

    Ming-Shuang Wang, Chang Wei, Gang Fan, Zhi-Gan Deng, Si-Fu Wang & Jun Wu

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  1. Ming-Shuang Wang
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  2. Chang Wei
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  3. Gang Fan
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  4. Zhi-Gan Deng
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  5. Si-Fu Wang
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Correspondence to Ming-Shuang Wang or Chang Wei.

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Wang, MS., Wei, C., Fan, G. et al. Molybdenum recovery from oxygen pressure water leaching residue of Ni–Mo ore. Rare Met. 32, 208–212 (2013). https://doi.org/10.1007/s12598-013-0026-0

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  • DOI: https://doi.org/10.1007/s12598-013-0026-0

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