What is high quality green silicon carbide powder?
High quality green silicon carbide powder has to get high silicon carbide content, few impurities, narrow particle size range.
The impurities in green silicon carbide are mainly free carbon, free silicon, and other impurities. In addition, it is the ash powder produced in the milling process.
Free carbon and free silicon are produced in the smelting process of green silicon carbide. Generally, they are pickled before crushing and milling to remove some impurities. However, for many use scenarios, green silicon carbide powder has more stringent requirements for impurities. For example, when used as coating filler, impurities will affect the color and quality of the coating. Therefore, the production process of green silicon carbide powder is actually obtained by twice pickling. It has high cleanliness and is suitable for various new material applications.
In addition, fine powder and large particles in green silicon carbide micro powder should also be avoided. Because the fine sand produced by the process of sand making will affect the ratio of silicon carbide powder and particle to the production of reaction sintered silicon carbide ceramics and the production of PVA wheels, or foam when adding binder. Therefore, to ensure the consistency of green silicon carbide powder particles, the particle size range should be as narrow as possible in order to achieve the ideal effect.