The ceramic ball is made of AL2O3, kaolin, synthetic aggregate, mullite crystal and other materials. According to the rolling and press forming methods. The product has high temperature resistance, corrosion resistance, high density, low thermal resistance, high strength, good thermal conductivity, oxidation resistance, strong slag resistance, large thermal conductivity and heat capacity, high heat storage efficiency; good thermal stability, not easy to change temperature Advantages such as rupture. The specific surface area can reach 240m2/m3. When in use, many small balls divide the airflow into very small streams. When the airflow flows through the heat storage body, a strong turbulence is formed, which effectively breaks through the surface layer of the heat storage body, and because the ball diameter is small, conduction Small radius, small thermal resistance, high density, and good thermal conductivity, so it can meet the requirements of frequent and fast reversing of the regenerative burner.