Study on Mechanism of Molybdenum Concentrate Carbon-Free Roasting


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Technical analysis was used to analyze the roasting of molybdenum concentrate on the basis of thermal balance test of rotary furnaces used for Roasting, and the results indicate that, on the condition of commercial production, the Roasting of MoS2 can occur spontaneously because the heat of reaction is so much that proper cooling measures should be adopted in case overheating happens. According to above analysis, carbon-free roasting technology of molybdenum concentrate was proposed in this paper. The results, which come from thermal balance test and technical analysis of rotary furnaces used for carbon-free roasting of molybdenum concentrate, indicate that outer heat source used in traditional Roasting technology is not needed in carbon-free roasting technology, because enough heat is generated during Roasting to ensure spontaneous reaction. In fact, heating is not needed in operating process except at the beginning, to make molybdenum concentrate catching fire, and when reaction completing, to remove residual sulphur. The technology in this paper is obviously advantageous in aspects of energy saving, output, quality of production, heat loss, the concentration of SO2 in flue gas, etc. and will have remarkable environmental benefits, economic benefits and social benefits.



Advanced Materials Research (Volumes 588-589)

Edited by:

Lawrence Lim




L. Y. Wang et al., "Study on Mechanism of Molybdenum Concentrate Carbon-Free Roasting", Advanced Materials Research, Vols. 588-589, pp. 1685-1688, 2012

Online since:

November 2012




[1] XIANG Tie-gen. Molybdenum Metallurgy. Changsha: Central South University Press, Vol. 5 (1992), p.1.

[2] Rare Metal Editorial Committee. Rare Metals Handbook. Vol. 2. Beijing: Metallurgical Industry Press, Vol. 12 (1995), p.34.

[3] XUN Run-ze. Powder Metallurgy Structural Materials[M]. Changsha: Central South University Press, Vol. 12 (1998), p.50.

[4] ZHANG Qi-xiu, ZHAO Qin-sheng. Tungsten and Molybdenum Metallurgy. Beijing: Metallurgical Industry Press, Vol. 9 (2005), p.5.

[5] Huang Hai-fang. Pollution and waste of baking moly concentrate and the countermeasures. Ferro-alloys, Vol. 1(2002), p.33.

[6] SONG Chun-yu, LI Qiang, Xie Xiao-hui. The process analysis of oxidizing roasting to molybdenum in ferromolybdenum smelting. China Molybdenum Industry, Vol. 34 (2010), p.7.

[7] WANG Lian-yong, ZHANG Jing-fan, CAI Jiu-ju, et al. Study on mechanism of molybdenum concentrate roasting[J]. China Molybdenum Industry, Vol. 35 (2011), p.17.


[8] DUAN Yu-xian, CAI Jiu-ju, ZHANG Bin, et al. Method and equipment of autothermal roasting of molybdenum concentrate. China. Patent 8, 201010237892. (2010).