Transformation Behavior of Molybdenum during Pressure Oxidation Process of Molybdenite Concentrate

Abstract:

MoS₂(AR) was used to analyze molybdenum transformation behavior in the pressure oxidation process of Chile molybdenite concentrate. Amount of NaNO₃, temperature and sulphuric acid concentration were investigated on the total transform rate of Mo, leaching rate of Mo and absolute transform rate of Mo in residue. ICP, XRF, XRD were used to analyze the content and phase of elements in the molybdenite concentrate and residue. Single factor experiment results of indicate that when amount of NaNO₃ is 1:4, temperature is 150°C,sulphuric acid concentration is 40g/L, oxygen partial pressure is 0.8MPa, liquid to solid ratio is 6:1(ml:g), reaction time is 120min and stirring speed is 500rpm, total transform rate of Mo is 97.95%, leaching rate of Mo is 18.48% and absolute transform rate of Mo in residue is 79.47%. Synthetical condition experiment results certified this process has the preferably reproducibility. Molybdenum could be recovered sufficiently through this method.

• Periodical: Applied Mechanics and Materials (Volume 79)
• Pages: 258-263
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.79.258
• Online since: July 2011
• Authors: Wang Zhong Mu, Ting An Zhang, Guo Zhi Lü, Zhi He Dou, Lan Hu, Yong Zeng, Yan Liu
• Keywords: Leaching Rate, Molybdenite Concentrate, Molybdenum, Pressure Oxidation, Transform Rate

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