A Method for Preparing Cementitious material with all solid wasteContaining Refining Slag

摘要

#$%^&*AU2020101223A420200806.pdf#####Abstract of Descriptions This invention provides a method for preparing cementitious material with all solid waste containing refining slag, which belong to the technical field of solid waste resource utilization. The cementitious materials includes 1%~20% of refining slag, 10%~20% of industrial by-product gypsum, and the balance is converter steel slag and blast furnace slag. The blast furnace slag and converter steel slag are ground separately or mixed to a specific surface area of 400~650m2/kg, by mass ratio of 3/4~4/3, and the refining slag and industrial by-product gypsum are ground separately or mixed to a specific surface area of 300~600m2/kg, the ground solid slag, refining slag, converter steel slag and industrial by-product gypsum are uniformly mixed to prepare the cementitious material with all solid waste containing refining slag. This invention effectively improves the application efficiency of metallurgical slag solid waste, strengthens the hydration of blast furnace slag in the later period, and significantly reduces the cost of concrete. At the same time, the synergistic mechanism of converter steel slag and blast furnace slag promotes the later strength growth of cementitious materials, while refining slag effectively shortens the initial setting and final setting time of steel slag concrete, and broadens the application scope of converter steel slag cementitious materials.