Refractory castable is an unshaped refractory material that is currently produced and used most widely. It is mainly used to construct various structures such as various furnace linings. Some premium varieties can also be used in smelting furnaces. For example, aluminate cement refractory castables can be widely used in various heating furnaces and other non-slag, acid-base-free thermal equipment, and refractory castables are the main types of amorphous refractories, depending on the binder used. The curing forming mechanism can be divided into three types: hydraulic, gas hard and hard.