Thermochemical decomposition of molybdenum concentrates with usage of magnesium-containing additives of natural origin

4th School-Seminar of Young Russian Scientists "Problems of Sustainable Regional Development", dedicated to the 70th anniversary of Academician of the Russian Academy of Sciences Arnold Kirillovich Tulokhonov

自然科学（总论）

Khomoksonova, D.P.^1 ; Budaeva, A.D.^1 ; Antropova, I.G.^1^2

Baikal Institute of Nature Management SB RAS, Ulan-Ude

670047, Russia^1

Buryat State University, Ulan-Ude

670000, Russia^2

关键词: Magnesium carbonate;    Magnesium sulfate;    Molybdenite concentrate;    Molybdenum concentrates;    Natural additives;    Physical and chemical properties;    Thermochemical decomposition;    Thermodynamic assessment;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/320/1/012033/pdf
DOI  :  10.1088/1755-1315/320/1/012033

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

This article presents the results of research on the sintering of molybdenite concentrate with magnesium-containing natural additives - brucite (Mg(OH)2) and magnesite (MgCO3). Physical and chemical properties of initial materials were studied. The thermodynamic assessment of the interaction of molybdenum with hydroxide and magnesium carbonate in an oxidizing medium is given. The process of thermochemical decomposition of molybdenum was optimized with usage of cheap magnesium-containing minerals to form molybdate and magnesium sulfate. The developed method makes it possible to reduce the cost of thermochemistry, to minimize the release of sulfur dioxide due to its rapid binding to magnesium sulfate.