Silicon carbide raw material has high chemical stability and toughness and can be used for grinding

For the silicon carbide raw material, the silicon carbide content is required to be more than 99.2%, and the self-developed advanced purification process ensures the high purity of the micro powder. After shaping the micro powder with patented shaping equipment, the micro powder has the advantages of good particle shape and strong fluidity. The whole production process is controlled by fully automatic air flow crushing equipment and world-class particle size detector, It further ensures the three advantages of the produced micro powder: strong stability, high purity and good particle shape. The products made of our micro powder have high density, smooth appearance and long service life.

DPF (vehicle exhaust purifier) uses high temperature resistant materials with specific structure to intercept particles in the exhaust and regenerate the filter in time, so as to reduce particle emission. The filter material is the key factor restricting the overall performance of the filter (such as filtration efficiency, exhaust pressure and durability). In recent years, silicon carbide material has been widely favored because of its excellent heat resistance, corrosion resistance and thermal conductivity. It is expected to replace cordierite as a new type of diesel vehicle exhaust particulate filter material.

Silicon carbide powder is mainly 1200 # and 1500 # powder. Since silicon carbide powder is mainly used in the abrasive industry, there are special requirements for the classification of silicon carbide powder, and there can be no large particles in the powder. Therefore, JZF classification equipment is generally used for high-precision classification in order to meet the requirements of international and domestic products. Domestic silicon carbide powder is mainly black silicon carbide powder and green silicon carbide powder.

silicon carbide

1. Abrasive - mainly because silicon carbide has high hardness, chemical stability and certain toughness, silicon carbide can be used to manufacture consolidated abrasives, coated abrasives and free grinding, so as to process glass, ceramics, stone, cast iron and some non-ferrous metals, cemented carbide, titanium alloy, high-speed steel cutting tools and grinding wheels.

2. Refractory and corrosion-resistant materials - mainly because silicon carbide has high melting point (decomposition temperature), chemical inertia and thermal vibration resistance, silicon carbide can be used in a variety of silicon carbide ceramic products, such as shed plates and saggers in grinding tools and ceramic products firing kilns, silicon carbide bricks for vertical cylinder distillation furnaces in zinc smelting industry, aluminum reduction cell lining, crucibles, small parts furnace materials, etc.

3. Chemical application - because silicon carbide can decompose in molten steel and react with free oxygen and metal oxides in molten steel to produce carbon monoxide and silicon containing slag. Therefore, it can be used as a purifying agent for smelting iron and steel, that is, as a deoxidizer for steelmaking and a structural modifier for cast iron. This generally uses low purity silicon carbide to reduce costs. At the same time, it can also be used as raw material for manufacturing silicon tetrachloride.

4. Electrical application - used as heating element, nonlinear resistance element and high temperature semiconductor material. Heating elements such as silicon carbide rod (applicable to various electric furnaces working at 1100 ~ 1500 ℃), nonlinear resistance elements and various lightning protection valve pieces.

5. Others are prepared into far-infrared radiation coating or made into silicon carbide plate in far-infrared radiation dryer.