... Drying methods: using autoclave3. Raw material: Fly ash(or Sand), cement, lime, gypsum, aluminum powder paste. The autoclaved aerated concrete block ... slurry with water, and then mixed with lime powder, proper cement, gypsum and aluminum powder paste and finally filled into mould ... The raw materials such as lime, cement, gypsum, sand(or fly ash), etc are stored in silo(tank) for use after treatment.(2 ...