煤矸石是采煤过程中从井下或露天矿场采出或混入到煤中岩石的总称。其种类繁多,组分和性质各具特色,在工农业中的用途也不相同。就岩性讲,既有黑色的炭质泥岩、炭质粉砂岩、炭质铝土岩等含碳量多的岩石,也有灰色的砂质粘土岩、 Coal gangue is the general term for rock extracted from coal mines or underground coal mines during coal mining. Its wide variety, composition and nature of its own characteristics, in the use of industry and agriculture are not the same. In terms of lithology, both black carbonaceous mudstone, carbonaceous siltstone, carbonaceous bauxite rock and other carbon-rich rock, there are gray sandy clay rock,