Silicon carbide refractory products

Silicon carbide refractory materials are made from fine-grained or powdery silicon carbide as raw materials. Made by adding binders (such as clay, silicon iron, quartz, etc.) or using high-temperature recrystallization method without binders.

Silicon carbide products using clay as a binder, containing 35% to 87% SiC, Si02 10% 〜50%,Al3O2 3%〜30%， The starting temperature for load softening is 1400-1620 ℃.

The recrystallized silicon carbide product produced by melting at 2300 ℃ contains 99% SiC and has a bulk density of 2.55g/cm3. The product has a high thermal conductivity and high resistance to rapid cooling and heating Blow the air rapidly at the operating temperature and repeat it up to 50-150 times High temperature chemical stability and wear resistance are both good, but the price is expensive and prone to oxidation in the range of 900-1100 ℃. The denser the product, the better its antioxidant properties. Commonly used as electric furnace lining, muffle furnace wall, refractory heating plate, box bowl, moving plate in push plate kiln, and electric heating element (silicon carbon rod).

By utilizing the characteristics of corrosion resistance, high temperature resistance, high strength, good thermal conductivity, and impact resistance of silicon carbide, it can be used for various smelting furnace linings, high-temperature furnace components, silicon carbide plates, liners, supports, ladles, silicon carbide crucibles, etc.

On the other hand, high-temperature indirect heating materials can be used in the non-ferrous metal smelting industry, such as vertical distillation furnaces, distillation furnace trays, aluminum electrolysis tanks, copper melting furnace liners, arc plates for zinc powder furnaces, thermocouple protection tubes, etc; Used for producing advanced silicon carbide ceramic materials that are wear-resistant, corrosion-resistant, and high-temperature resistant; It can also be used to make rocket nozzles, gas turbine blades, etc. In addition, silicon carbide is also one of the ideal materials for solar water heaters on highways, aircraft runways, etc.