Attività

Honeycomb ceramic is a new type of ceramic product with a honeycomb-like structure. It is widely used in chemical, electric power, metallurgy, petroleum, electronic appliances, machinery and other industries from the earliest use in small automobile exhaust purification, and it is becoming more and more extensive, and its development prospects are considerable. Honeycomb ceramics are composed of numerous and equal pores in various shapes. The maximum number of pores has reached 120 to 140 per square centimeter, the density is 0.3 to 0.6 grams per cubic centimeter, and the water absorption rate is as high as 20%. Due to the characteristics of porous thin wall, the geometric surface area of the carrier is greatly increased and the thermal shock resistance performance is improved. The meshed pores of the produced products are mainly triangular and square. These are especially important as catalytic supports. With the increase of the number of pores per unit area and the decrease of the thickness of the carrier hole wall, the thermal shock resistance of the ceramic carrier increases, and the temperature of thermal shock damage also increases. Therefore, the honeycomb ceramic must reduce the expansion coefficient and increase the pore size per unit area. number. The thermal expansion coefficient is the main performance index. The current foreign level is α25-800℃≤1.0×10-6℃-1, which has a certain gap with the domestic comparison, but the gap is getting smaller and smaller. The earliest raw materials for the production of honeycomb ceramics are mainly kaolin, talc, aluminum powder, clay, etc., especially the application of diatomite, zeolite, expansive soil and refractory materials.http://www.xichuangcatalyst.com/honeycomb-ceramic/honeycomb-ceramic-catalyst/