... autoclaved aerated concrete plant, autoclave aerated concrete production line AAC is made from silicon material (silica sand, or recycled fly ash ... , tilting, cutting and autoclaving.Process chartTo manufacture AAC, cement is mixed with lime, silica sand, or recycled fly ash, ... curing in a pressurized chamber (an autoclave) for 10 to 12 hours. The result is a non-organic, non-toxic, airtight material ...