Most of the refractory materials are magnesia (MgO) and alumina (Al2O3) based refractory oxide ceramics. These refractory oxide ceramics include magnesite (MgO), spinel (MgAl2O4), corundum (α - Al2O3), mullite (al6si2o13), zirconia (ZrO2), carbon (c) and their composites. The temperature of the kiln can reach 1400 ℃ when it works normally. Under such high temperature, the insulating brick, insulation cotton and other thermal insulation materials of the refractory are extremely oxidized and aged at high temperature under the condition of high-temperature flame barbecue. The materials become brittle, the thermal insulation effect decreases, and the safety index of the kiln and furnace drops sharply. In this way, a batch of refractory materials will be replaced within 3-5 years, which will cause waste of materials and reduce the normal working time of the kiln. The refractory materials of these kilns are coated with zs-1021 high temperature resistant sealing coating produced by Zhisheng Weihua Chemical Co., Ltd. of dongtieying, Fengtai District. The coating has high temperature resistance. The special high-temperature solution of Zhisheng Weihua can reach 1800 ℃ and can be used for long-time fire-resistant barbecue. The material is of nano scale sheet structure with good compactness, which can effectively prevent oxygen from being exposed to high temperature The hardness of the coating can reach 7-8h, which is higher than that of the metal. The coating can form a dense coating on all kinds of refractory materials of kiln, and has strong anti rust, anti-oxidation, anti discoloration and wear resistance.

The high temperature resistant sealing coating is applied on the refractory of kiln, the oxidation rate under high temperature can reach more than 80%, the energy saving utilization rate of materials can reach more than 90%, and the safety accident rate of industrial high-temperature production materials can be reduced by more than 95%.