Preliminary communication

Thermodynamic diagram analysis (TDA) of MnO–CaO-Аl₂O₃-SiO₂ and phase composition of slag in refined ferromanganese production

D. Yessengaliyev orcid.org/0000-0003-0792-0822 ; Karaganda State Technical University, Karaganda, Kazakhstan
S. Baisanov ; Chemical-Metallurgical Institute, Karaganda, Kazakhstan
A. Issagulov ; Karaganda State Technical University, Karaganda, Kazakhstan
A. Baisanov ; Chemical-Metallurgical Institute, Karaganda, Kazakhstan
O. Zayakin ; Institute of Metallurgy, Yekaterinburg, Russia
A. Abdirashit ; Aktobe regional state of university, Aktobe, Kazakhstan

Abstract

The research presents the calculations of the analytical expressions of the oxide system MnO-CaO-Al₂O₃-SiO₂ and the phase compositions of the slags from the production of refined ferromanganese. It is determined that the system under consideration is divided into 19 elementary quasi-systems consisting of incongruently melting and congruently melting compounds. The sum of the relative volumes of the elementary tetrahedron of the MnO-CaOAl₂O₃-SiO₂ system equals one (1,000000), which confirms the accuracy of the performed calculations. Quasi-volumes in the system MnO-CaO-Al₂O₃-SiO₂, simulating the composition of the resulting slag in the process of metallothermic recovery of manganese concentrates are found.

Keywords

thermodynamic-diagram analysis; refined ferromanganese; phase composition; oxide system; metallothermy

Hrčak ID:

218404

URI

https://hrcak.srce.hr/218404

Publication date:

1.7.2019.

Visits: 1.573 *