Silicon Carbide SIC RBSIC/SSIC Ceramic heat exchanger is a new type of tube-type high-temperature heat recovery device which is mainly made by silicon carbide. It can be widely used in metallurgy, machinery, building materials, chemical and other industries. It is used to directly retrieve the 850-1400℃wasted high temperature flue gas heat radiated by industrial furnaces. It has excellent properties of high temperature resistance and thermal shock resistance, can be cooled from 1000℃to room temperature repeated for more than 50 times without cracks. It structurally solved the thermal compensation and the gas sealing problem. The high heat transfer efficiency and remarkable energy saving effect can be used to preheat combustion air or heat some process gases. So it can save the primary energy.