Preparation method of granulated blast furnace slag, lepidolite slag and steel slag composite powder

The invention provides a preparation method of granulated blast-furnace slag, lepidolite slag and steel slag composite powder, and belongs to the technical field of composite powder processing equipment.The preparation method of the granulated blast-furnace slag, lepidolite slag and steel slag composite powder adopts the following equipment for preparation, the equipment comprises a tank body, and a plurality of crushing bins distributed from top to bottom are arranged in the tank body; a feeding opening is formed in one side of the crushing bin, the other side of the crushing bin communicates with the mixing box through a discharging assembly, a vertical crushing mechanism is arranged in the tank body, an upper power bin for driving the crushing mechanism is arranged above the upper-layer crushing bin, and a lower power bin for driving the crushing mechanism is arranged below the lower-layer crushing bin; the crushing mechanism comprises a core shaft and a main shaft which is vertically arranged outside the