Ceramic foundry sand is based on high-quality bauxite as raw materials, after high-temperature calcination, arc furnace melting and high-pressure gas blowing, obtained spherical or nearly spherical and smooth surface sand, and then through the multi-stage screening, magnetic separation cleaning and section of the process to form a new multi-functional material. The product has the characteristics of high refractoriness, low thermal expansion rate, good thermal stability, strong collapsibility, etc., and can be recycled and reused, green environmental protection, cost-effective, and deeply trusted by customers.Ceramic foundry sand is suitable for a variety of casting processes and has significant advantages in precision casting with high material requirements and complex structures. It is widely used in the fields of lost mold casting, water glass sand casting, self-hardening sand casting, hot box casting, cold box casting, investment casting, alloy surface treatment, and production of coated sand, refractory paint, drainage sand, etc. At the same time, the product is also widely used in the refractory and polishing and grinding industry.