Abstract:
According to the utilization practices of coal refuse in China,economic benefits and environmental impacts of several main utilization processes were analyzed.On the basis of the economic profit caused by utilization of one ton coal refuse,these utilization processes are ordered as follows,from superior to inferior;refinement of chemical products,generating electricity,production of cement clinker,production of brick,production of mineral admixture and production of roadbed material.On the other hand,when the whole environmental impact is analyzed as the mo important index,the following order from high to low will be obtained;production of brick and production of cement clinker,production of mineral admixture and production of roadbed material,generating electricity,refinement of chemical products.Therefore of mineral admixture and production of roadbed material,generating electricity,refinement of chemical products.Therefore,in order to increase the economic profit and decrease the environment pollution,the combination method of several processes and some cleaning process should be adopted to make use of the coal refuse according to the actual coal refuses quality and quantity.