Journal of Mining Science

, Volume 54, Issue 2, pp 300–305 | Cite as

Improvement of Oxidizing Roasting of Molybdenite Concentrate by Addition of Magnesite

  • D. P. Khomoksonova
  • E. S. Kashkak
  • I. G. AntropovaEmail author
Mineral Dressing


The results of the thermodynamic modeling are presented for oxidizing roasting of refractory molybdenite (MoS2) with magnesite (MgCO3). The phase and chemical compositions of the MoS2–MgCO3–O2 system and its changes are determined depending on the temperature and quantity of the additive agent. The modeling reveals feasibility of thermochemical decomposition of molybdenite with the formation of waterand soda-soluble compounds MgMoO4 and MgSO4, which is an evidence of efficiency of magnesium carbonate in the capacity of an additive agent. The optimal conditions of the thermochemical decomposition of molybdenite determined theoretically from thermodynamic calculations are proved experimentally.


Molybdenite concentrate magnesite thermodynamic modeling roasting magnesium molybdate magnesium sulfate 


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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • D. P. Khomoksonova
    • 1
  • E. S. Kashkak
    • 2
  • I. G. Antropova
    • 1
    Email author
  1. 1.Baikal Institute of Nature Management, Siberian BranchRussian Academy of SciencesUlan-UdeRussia
  2. 2.Tuva State UniversityKyzylRussia

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