Technical background According to Stephen-Boltzmann's Law, the thermal efficiency of the kiln can be improved by enhancing the effective radiation of the lining to the workpiece. The workpieces heated by kilns in different industries are different, and the absorption capacity of different workpieces to infrared waves in various bands is also different. Only when the wavelength and frequency of infrared waves radiated by the lining match the heated workpiece can they be absorbed by the workpiece and become effective heat energy. Therefore, the development and application of infrared radiation coatings or lining insulation materials with strong radiation capabilities and adapted to the requirements of different workpiece absorption bands is the key to improving the thermal efficiency of the kiln. Energy Saving Principle Infrared radiation materials act on the heated object through infrared radiation, causing molecular resonance absorption, achieving the purpose of rapid heating, rapid heating and rapid drying. As a new energy-saving material used in thermal processing equipment such as industrial furnaces, infrared radiation coating can not only achieve significant energy-saving effects, but also play a good role in protecting lining materials, extending the service life of industrial furnaces, and reducing kiln maintenance workload. In addition, it can also strengthen radiant heat transfer in the furnace, improve heating uniformity, and improve furnace thermal efficiency and product heating quality. The heating schematic diagram of infrared radiating materials is shown in Figure 1, and the effect of infrared radiating materials on the kiln is shown in Figure 2. Infrared radiation energy-saving coating is a new high-efficiency, energy-saving and environmentally friendly product used in various industrial kilns. It can be directly sprayed on the surface of refractory materials of various high-temperature kilns, or the surface of steam boiler water wall tubes, and closely bonded with the inner wall of the furnace body to form a solid surface coating that isolates the refractory surface from direct contact with the combustion airflow, avoiding the erosion and corrosion of the airflow on the kiln wall, thereby protecting the furnace body and extending the furnace life. The coating has the advantages of high emissivity, long service life, small thermal conductivity, good airtightness, high fire resistance, strong adhesion, difficulty in cracking and falling, corrosion resistance, simple and rapid construction, stable quality, etc., and can significantly improve the heat transfer effect in the furnace, improve fuel combustion efficiency, reduce exhaust emissions, and have significant energy conservation and environmental protection benefits. This technology has obtained many national invention patents, and its product technical performance has reached the domestic advanced level. Construction method and packaging method (1) Construction method 1. Clean the inner surface of the furnace: Remove floating ash from the surface of refractory materials, and remove oxide scales from the surface of metal materials and remove ash. 2. Then spray the pretreatment liquid, dry the surface, and then spray the high-temperature infrared radiation energy-saving coating of this technology." The thickness of brushing (or spraying) on the surface of refractory materials is about 0.4mm, and the average amount for the project is 1.31.5kg/m2; Brush (or spray) on the surface of metal materials to a thickness of about 0.2mm. 3. After the construction is completed, it is naturally dried in the shade for more than 5 hours, and then slowly heated to the working temperature of the kiln to cure and sinter the coating. 4. The service life of energy-saving coatings is more than 1 year, and it is recommended to spray them once a year to achieve better energy conservation and emission reduction effects. (2) Packaging method: 5kg, 10kg, and 15kg plastic drums, and the plastic bags inside the drums are sealed. Application fields Industrial fields The working temperature of the series of infrared radiation energy-saving materials for medium and high temperature kilns and heating bodies in metallurgy, building materials, chemical and other industries ranges from room temperature to 2500℃. High infrared radiation energy-saving coatings can be used for metal heat treatment furnaces, heating furnaces, smelting furnaces, ceramic drying or firing kilns, resistance furnaces, petrochemical cracking furnaces, cement kilns, industrial and civil boilers, and boiler fire tubes (water wall tubes) surface insulation, Energy conservation and consumption reduction; It is also an anti-oxidation and anti-ablation coating material for furnace (kiln) bodies, nozzles, heating bodies, and graphite electrodes that are severely chemically corroded or ablated at high temperatures. This infrared heating method has the characteristics of uniform heating, high thermal efficiency, low energy consumption, and high yield of heated and dried products. It can be widely used for heating and drying various products in various industries such as building materials, metallurgy, chemical industry, ceramics, automobiles, etc., realizing reasonable and efficient conversion and utilization of energy, and has important practical significance for energy conservation and emission reduction. The military, aerospace, and aerospace industries can be used for thermal protection materials and heat dissipation coatings on the head surface, nozzles and other parts of aerospace vehicles. Some application areas of infrared radiating materials are shown in Figure 3. Technical advantages: 1.Improve the efficiency of the kiln, shorten the heating time, increase output, and improve heating efficiency 515%; 2. Fuel consumption and energy saving rate can reach 515%, different energy kilns have different energy-saving effects. The higher the temperature, the better the energy-saving effect. Resistance furnaces have the best energy-saving effect; 3. Increase the temperature in the furnace by 20100℃, reduce the outer surface temperature of the furnace by 525 ° C, reduce the exhaust gas temperature by 10Around 25 ° C; 4. Extend the service life of the kiln and reduce the combustible content in the flue gas by more than 50%;5. Reduce the workload and cost of maintenance and repair of the kiln, and reduce the labor intensity of employees. At present, this technology has entered the biological trial stage and has been successfully applied. In addition, relevant technical indicators are shown in Table 1. Preparation: The temperature distribution is uniform, and the wavelength of 3 can be selected according to customer requirements.~2000 micron coatings in different wavelength bands. Application Field This technical product is suitable for various industrial kilns, military, aerospace, aviation industries, etc., such as metal heat treatment furnaces, heating furnaces, smelting furnaces, ceramic drying or firing furnaces that use electricity, gas, heavy oil, coal, etc. as energy sources. Kilns, resistance furnaces, petrochemical cracking furnaces, cement kilns, industrial and civil boilers, and aerospace vehicle head surfaces, nozzles and other parts; it is also suitable for investors interested in coatings.