Preliminary study on characteristics of high alumina coal resources in Hongduanzi Mining Area of Ningxia
On the basis of collecting a large number of borehole data during the exploration period in Hongduanzi mining area,the paper collated and analyzed the coal seam and coal quality test data,and found that the content of alumina in the coal ash composition of every recoverable coal seam was higher,the average content reaches 35％～40％,and the content of No.5 coal seam is the highest,and its content distribution has certain regularity in plane and vertical.At the same time,it is found that the geological condition of coal formation is the key factor of high-alumina coal formation.
high alumina coalhigh aluminum fly ashaluminahongduanzi mining area
NETL
NSTL
万方数据
维普
