Molybdenite alkali fusion and leaching: reactions and mechanism

Reza Ebrahimi-Kahrizsangi; Mohammad Hasan Abbasi; Ali Saidi

doi:10.1007/s12613-010-0201-3

Volume 17 Issue 2

Apr. 2010

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文章导航 > 矿物冶金与材料学报（英文版） > 2010 > 17(2) : 127-131. > DOI: 10.1007/s12613-010-0201-3

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Reza Ebrahimi-Kahrizsangi, Mohammad Hasan Abbasi, and Ali Saidi, Molybdenite alkali fusion and leaching: reactions and mechanism, Int. J. Miner. Metall. Mater., 17(2010), No. 2, pp.127-131. https://dx.doi.org/10.1007/s12613-010-0201-3

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Molybdenite alkali fusion and leaching: reactions and mechanism

Department of Materials Engineering, Islamic Azad University, Najafabad branch, Najafabad, Isfahan, Iran
Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran

通信作者:
Reza Ebrahimi-Kahrizsangi E-mail: rezaebrahimi@iaun.ac.ir

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中文摘要

The production of MoO₃ from Sarcheshmeh molybdenite concentrate via a pyro-hydrometallurgical process was studied. The molybdenite concentrate and sodium carbonate were premixed and fused under air atmosphere. Then the fused products were leached in water and the dissolved molybdenum was recovered as ammonium molybdate. The ammonium molybdate was then calcined to produce molybdic oxide. At the fusion stage, the effect of the mass ratio of carbonate to sulfide on the reaction products and the solubility of the products was investigated. The results show that during the fusion, sodium molybdate and sodium sulfate are the final reaction products and sodium sulfide is detected as an intermediate reaction product. By melting at 850℃ with 5wt% excess carbonate, the maximum solubility of the products is obtained. The molybdenum is recovered from the solutions as ammonium molybdate.

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Molybdenite alkali fusion and leaching: reactions and mechanism

Author Affilications

Department of Materials Engineering, Islamic Azad University, Najafabad branch, Najafabad, Isfahan, Iran
Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran

Received: 11 March 2009; Revised: 02 May 2009; Accepted: 09 June 2009;

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