THERMODYNAMIC MODELING OF THE RECOVERY PROCESS OF MANGANESE BY METALLOTHERMIC METHOD

Yessengaliyev D. Kelamanov B. Zayakin O.
2022 University of Chemical Technology and Metallurgy

Journal of Chemical Technology and Metallurgy
2022 #57 Issue 6 1230 - 1234 pp.

A calculation of thermodynamic model of the recovery process of manganese from oxide system MnO - CaO - Al₂O₃ - SiO₂ - MgO is presented in the study. For the calculation, the following composition in % was used: 35.00 Mn₃O₄; 7.70 Fe2O3; 1.29 Al₂O₃; 0.50 MgO; 0.001 P₂O₅; 15.20 - 30.00 SiO₂; 30 - 40 CaO. A complex aluminum-siliconmanganese alloy (AlSiMn) of the following grades AlSiMn 1, AlSiMn 2, AlSiMn 3, AlSiMn 4 and silicomanganese SiMn 26, are used as a reducing agent in the traditional technology. The HSC Chemistry 10.0 program (Outotec, Finland) was used for the calculation. The calculations were carried out using the “Equilibrium composition” module at a pressure of 0.1 MPa, in the temperature interval of 1400 - 1700°C. The calculation results are presented in the form of graphical dependences of the extraction of manganese (ηMn), on the temperature (t), on the slag basicity (CaO/SiO₂) and the concentrations of silicon and aluminum in the complex alloy - AlSiMn ([Si]AlSiMn and [Al]AlSiMn). By means of thermodynamic calculations and mathematical planning of experiments, it was possible to establish the influence of the studied factors on the of manganese extraction.

Aluminum-siliconmanganese alloy , Metallothermy , Oxide system , Silicomanganese alloy , Slag basicity , Temperature , Thermodynamic modeling

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K. Zhubanov Aktobe Regional University, 263 (3),st. Brothers Zhubanov, Aktobe, 030000, Kazakhstan
Institute Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101,st. Amundsen, Ekaterinburg, 620016, Russian Federation

K. Zhubanov Aktobe Regional University
Institute Metallurgy of the Ural Branch of the Russian Academy of Sciences

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