KR20130009000A - Coal gangue ceramsite and its preparation ...
The present invention is an artificial lightweight aggregate using coal waste-rock and its manufacturing method, the raw material is 75-85% (weight ratio) of coal waste-rock powder, 5-10% adhesive, 1-5% additives and 5-10 fly ash Composition as an expanding solidifying agent; In addition, the method of manufacturing artificial lightweight aggregate includes the following procedure; Raw ...