Calculation of Phase Composition of Rich Titanium Slag and Ferrotitanium Slag from Processing of Ilmenite Concentrate

The phase structures of slag products of metallurgical processing of Shokash ilmenite concentrates are considered. New data on the phase structure of the Al2O3-TiO2-CaOSiO2- MgO five-dimensional system were obtained on the basis of thermodynamic modeling by the method of «Heatha». Thus, in the Al2O3-SiO2-СaО-MgO and MgO-ТiО2-SiO2-Аl2O3 systems, three and five new tetrahedra are formed, respectively. The phase compositions of titanium- containing slags are calculated, which makes it possible to select the optimal areas of more technologically advanced slags and ferrotitane slags. Data on the phase composition of slags allow predicting their relative melting temperatures and viscosity, taking into account data on the melting temperatures of secondary components and their ratios in the elementary volume. The chronology of changes in relative phase compositions depending on the content of TiO2 in materials, ranging from 5% to over 75%, is shown.