Also known as fused ceramsite or ceramsite sand, ceramic foundry sand is a new type of casting material made from high-quality bauxite by calcination, electrofusion, granulation, screening other processes. It is mainly used in the casting industry; The use is not the same for the different specifications of ceramic foundry sand; In the casting process, other ceramic foundry sand specifications are selected according to different casting technology. For example, some meshes are suitable for aluminum castings, and some meshes are more ideal for steel castings.