The gangue is one of the industrial solid waste has largest discharge and stacking,but it is usable,and will be a valuable material only if used as a kind of resource.

• 煤矸石是我国排放量和堆存量最大的工业固体废弃物之一,但又是可以利用的资源,只要加以资源化利用,就能会变废为宝。