After the coal gangue is crushed by the crusher, it enters the coal gangue vertical roller mill and then performs grinding operation to improve the comprehensive utilization rate of its resources. This is the new direction of my country's coal gangue development under the new national policy situation. After the coal gangue is superfinely ground, it not only realizes the comprehensive utilization of resources, but also protects the environment, and the investment prospects are broad! Coal gangue is a kind of solid waste in the process of coal mining and coal washing. It is a kind of black-gray rock with lower carbon content and harder than coal that is associated with coal seams during coal formation. my country is a big coal country, and the dumping and accumulation of coal gangue wastes a lot of usable resources and damages the environment. Moreover, in fact, coal gangue contains business opportunities for secondary utilization.