Abstract:

Based on the analysis of the geological background, coal seam and coal, the chemical and mineral compositions of high alumina coal in Jungar was analyzed by chemical analysis and X-ray diffraction (XRD), and the varation of the content of alumina in the coal was studied in this paper. It was found that only No.6 and No.9 coal seam could be recoverable in the whole region, the average thickness of No.6 coal seam was 12m, and the northern of the seam was thicker than the southern; the average thickness of No.9 was 2.94m, and gradually thinning from north to south; the alumina component in the coal was come from the mineral: kaolinite and boehmite. In the No.6 coal seam, the coal in Heidaigou exploration area contains the highest concentration of Al2O3 , while in the No.9 coal seam, the coal in Kongduigou exploration area was the highest. It was also found that the content of gallium element of the coal in majority mine, was exceeded to the minimum industrial grade; and the formation of high alumina coal was affected on the coal geological conditions.

Key words: Jungar coal field, High alumina coal, alumina