... ,autoclaved aerated concrete block factory. We offer full automatic AAC plant ,light weight block making machinery ,autoclave aerated block complete ... main use silicon material(for example: coal ash , sand , stone dust and others ) ,through making thematerial small for example sand,they can ... use 4200 Ton coal ash ,and savecoal ash using area 0.5 mu,save burning clay brick 5 mu . Mould for AAC plant