... grain,main use silicon material (for example:coal ash,sand,stone dust and others ),through making the material small for ... lowest wasteMain Material:coal ash sand waste mine material coal stone,stone dust and other silicon materials. Detailed Product Descriptionaerated autoclaved concrete ... hours/1.6Mpa, total 6.5 hours. Mould,bottom plate,steam curing cart of Autoclaved aerated concrete product line