Patent ID: 8177908
Filing Date: 2012-05-15
Classification: C04B,C09K,E02D,Y02W

Abstract:
1. A fill material for an underground void comprising an intimate mixture of: a particulate composition comprising aggregate particles, a particulate, hydraulically solidifiable inorganic binder composition for said particulate composition and water, said aggregate particles comprising mine tailings, alluvial sand, rock fill, or combinations thereof; said binder composition comprising, in weight %, to a total of 100%, based on the weight of the binder composition: a) 49 to 95% of a ferrous slag; b) 2.5 to 35% of kiln dust selected from the group consisting of cement kiln dust, lime kiln dust and mixtures thereof, wherein said cement kiln dust has a free lime content of at least 2.5%, by weight, based on the weight of cement kiln dust; and c) 2.5 to 16% of a material selected from the group consisting of Portland cement, lime and combinations thereof.