Study of the phase composition of Kazakhstani manganese ores in the sintering process

Abstract

The article investigates the effect of the sintering temperature on the crystal structure and elemental composition of manganese ores from the Bogach and Zhaksylyk deposits (central Kazakhstan) by X-ray phase (XRD) and energy-dispersive X-ray fluorescence (EDX) analyzes. The results obtained are of practical importance and are relevant for the development of technologies for obtaining new phases of manganese minerals at a given temperature. There was used a temperature range of 600 ° C, 800 ° C, and 1000 ° C for the sintering process. As a result of the study, it was found that when the sintering temperature changes, the processes of phase transitions occur with the formation of stable thermostable phases, particularly, hausmanite and bixbyite. At the same time, the elemental composition remains practically did not change. For a sample from the Zhaksylyk deposit, an increase in temperature increases the homogeneity of the structure, which is expressed in an increase in the uniformity of the elemental composition after sintering at temperatures above 800 ° C.