Abstract: To solve the problem of environmental pollution of coal gangue heap to produce, in Datong hill mine coal gangue as the research object, on the basis of the characteristics of the analysis and research from the coal gangue in sorting out the included the feasibility of the technology. The research results show that the moving sieve jigging separation process to separation of the mine gangue, kaolin rock yield can reach 26.67%, ash 72.02%, separation effect is good. The successful application of the separation system, has important significance to improve the environment, and to achieve the purpose of the waste, created a considerable economic benefits for the enterprise.