A: It’s used for autoclaved cure aerated concrete block, concrete pipe pile, bricks , coal dust brick, micro pore calcium silicate board, new style wall material, insulation asbestos, high strengh gypsum and so on building material. There will be a hydro-thermal reaction like Cao—Si02—H2O. Meanwhile it’s widely used in rubber, wood drying, wood preservative, and heavy metal smelting, glass autoclaved, high temperature hign pressure to food, pulp cooking, cable vulcanization and so on.