Silica Checker Bricks honeycomb ceramic lattice brick is a heat transfer medium, which is mainly used in the upper part of the regenerator of the hot blast stove to store heat. It plays an extremely important role in the process of heating cold air into hot air.

Silica Checker Bricks is a honeycomb ceramic lattice brick made of silicon carbide as the main material. Silica Checker Bricks not only have excellent mechanical properties at room temperatures, such as high flexural strength, excellent oxidation resistance, good corrosion resistance, high wear resistance, and low friction coefficient, but also high-temperature mechanical properties (strength, creep resistance, etc.) is the best known ceramic material. The high-temperature strength of hot pressing sintering, pressureless sintering, and hot isostatic pressing sintered materials can be maintained up to 1600℃, which is the material with the best high-temperature strength among ceramic materials. The oxidation resistance is also the best among all non-oxide ceramics. The disadvantage of Silica Checker Bricks is that the fracture toughness is low, that is, the brittleness is large. For this reason, in recent years, multiphase ceramics based on Silica Checker Bricks, such as fiber (or whisker) reinforcement, different phases of Particle dispersion strengthening, and graded functional materials have appeared one after another, improving the toughness and strength of monomer materials.

Silica Checker Bricks are mainly composed of lattice brick shells and honeycomb holes distributed in them. The Silica Checker Bricks are made of silicon carbide. The Silica Checker Bricks belong to a regenerative heat exchange element, which is mainly used for the heat storage of industrial furnaces such as heating furnaces, annealing furnaces, and shuttle furnaces. 

The characteristics of Silica Checker Bricks

Good volume stability, excellent high-temperature load creep performance, excellent oxidation resistance, good corrosion resistance, high density, and low porosity. 

Application of Silica Checker Bricks

Silica Checker Bricks are mainly used in hot blast stoves. When the hot air is lower than 900 °C, clay bricks are generally used; when the air temperature is higher than 900 °C, silicon carbide honeycomb ceramics are used. The blast furnace uses hot air for smelting, which can greatly reduce the amount of fuel consumed in the ironmaking process. The hot blast stove is a device that works periodically. It has two working periods: the combustion period and the air supply period, and the two working periods are rotated periodically. During the combustion period, the gas fuel is burned on the burner of the hot blast stove to generate high-temperature flue gas, and the high-temperature flue gas passes through the holes of the Silica Checker Bricks, transferring heat to the Silica Checker Bricks, and the flue gas is heated and carbonized. At the same time as the silicon honeycomb ceramic lattice brick, its own temperature drops, and the flue gas is cooled by the Silica Checker Bricks and then discharged into the atmosphere from the chimney through the flue pipe. During the air supply period, the cold air from the blower enters the hot blast furnace, is heated by the Silica Checker Bricks into hot air, and then sent to the blast furnace through the hot air pipe.