The heat storage body mainly includes honeycomb ceramic, heat storage ball and heat storage tube. The specific surface area of honeycomb ceramics is more than 5 times that of the ball, the heat transfer capacity is 4-5 times larger, the airflow resistance is only 1/3 of the ball, and the dithermic depth is small. Therefore, the honeycomb ceramic is more conducive to low oxygen combustion than the regenerative ball, making the furnace temperature uniformity, heat transfer speed, fast steel, greatly reduce the oxidation loss and NOx gas generation, significantly improve the environmental protection and energy saving. The volume of the regenerative chamber with honeycomb ceramics is greatly reduced, and enough burners can be arranged to meet the demand of heat load. The honeycomb ceramic direct airflow channel is more difficult to plug than the labyrinth channel of the ball, good self-cleaning, suitable for the characteristics of China's combustion unclean. Our newly developed mullite cordierite composite and rigid jade honeycomb ceramic heat accumulator has the advantages of high temperature resistance, corrosion resistance, good thermal shock stability, high strength, high heat storage, good thermal conductivity and so on, and greatly improves the energy saving and service life, which is favored by the iron and steel industry.