Characteristics of preparation technology of gangue filling grout for separated layer grouting in Hulusu Coal Mine
This paper introduces the existing problems of gangue separated layer grouting and filling,and the improvement measures and characteristics adopted in separated layer grouting in Hulusu coal mine,the preparation technology of gangue slurry,the determination of the particle size of discharged gangue,the selection of Crusher,the selection of ball mill type and driving mode,the overhaul of ball mill and the problems needing attention in design are discussed,this paper analyzes the economic and social benefits after the operation of Hulusu Coal Mine separated layer grouting gangue filling project.