Coal Gangue Milling to 80mesh: Resource Utilization and Milling Equipment Selection
Coal gangue is a solid waste generated during coal mining and washing. If it is not properly treated, it will occupy a lot of land resources and cause environmental pollution. However, coal gangue is also a valuable secondary resource. After milling to 80mesh, it can be used in the production of building materials, power generation, road construction and other fields, realizing the resource utilization of coal gangue. Therefore, the milling of coal gangue to 80mesh has important economic and environmental significance.
When selecting milling equipment for coal gangue to 80mesh, the characteristics of coal gangue should be fully considered. Coal gangue has the characteristics of high hardness, high ash content and complex composition, so the milling equipment needs to have strong wear resistance and reliable working performance. At present, the commonly used equipment for coal gangue milling to 80mesh includes ball mill and vertical roller mill.
Ball mill is a traditional milling equipment, which is widely used in coal gangue milling due to its strong adaptability to materials. The ball mill is composed of a cylinder, grinding media (steel balls), bearing, transmission device and other parts. The working principle is that the cylinder rotates to drive the steel balls to rise and fall, and the material is crushed and ground by the impact and friction of the steel balls. When milling coal gangue to 80mesh, the raw coal gangue is first crushed to less than 30mm by a crusher, and then sent to the ball mill.
