Study on Comprehensive Utilization of Coal Refuse in Shendong Mining Area

According to large lands occupied for amount of coal refuse piled up and the serious pollution environment problems, coal refuse samples were collected from 12 coal refuse dumping sites in Shendong Mining Area. Based on the analysis on the chemical composition, mineral composition, calorific value and other paramet ers of the coal refuse, a classified comprehensive utlization was conducted on the coal refuse. The results showed that the chemical composition of the coal refuse in S hendong Mining Area were SiO2, Al2O3and Fe203mainly. Among those chemical compositions, the coal refuse with SiO2content over 50% would be suitable to develop silicon series chemical products, the Al2O3and SiO2contents were over 70% and the Al2O3content would be 20%, the coal refuse could produce the chemical products with a high added value. The coal refuse with kaolinite content over 50% could be suitably applied to the calcination of kaoline.The coal refuse with a calorific value over 5 000 kJ /kg could be mixed with slime or middlings for the coal refuse-fired power generation.