随着煤炭产量的增长，固体废物排放量也不断增加。据统计，我国每年排放好石约1．7亿t，历年打积量已达3O亿已全国有850余座碎石山，占用土地约1100OSin‘，而作为资源利用的碎石量不到2（）’X）以煤碎石作复合肥料在国外早已得到推广应用。我国研究单位对煤牙石的物4I性能等 As coal production increases, solid waste emissions also increase. According to statistics, China discharges about 170 million tons of good stone each year, and has accumulated 3,000 million tons of accumulations over the years. There are over 850 pieces of gravel mountains in the country, occupying about 1100OSin ’of land, while the amount of gravel used as a resource is less than 2 () ’X) as a coal-bearing compound fertilizer has long been promoted abroad. China’s research unit of coal 4I properties and other materials