Coal gangue is a solid waste produced in coal production and processing as well as one of the most quantity solid waste ejected. So far the coal gangue has piled and excess more than 4 billion ton with more than 0.1 billion ton/year increasing.

We cannot ignore the harmfulness of coal gangue. Because coal gangue is not only piling high, but also wastes resources, covering fields as well as polluting environment. Although some government departments have carried out a series of supporting and incentives, bring vast of financial and material resources to decrease the pollution of coal gangue at maximum limits. But there is little affect with low utilization of coal gangue.

With the expansion of coal production size, coal gangue is increasing continuously, which caused the environmental problem seriously. The management task is rather difficult with the utilization of coal gangue, which is becoming one of the outstanding problems in company developing.

Aiming at utilization and recycling of coal gangue, Liming make a series of breakthrough on research and design. Coal gangue crusher has a vivid effect on coal gangue crushing. The crushed coal gangue can be used for brick making, power generation, mixture with cement and concrete after powder grinding and separating with important function. The utilization ratio can excess 90%, which turn waste into value.

Emphasis and solving company coal gangue comprehensive utilization problem is important for environmental protection, promoting area economic developing and increasing company developing quality and profit level. Liming Heavy Industry coal gangue unquestionably turns coal gangue into value for recycling, which will play an important and significant realistic and strategic significance.