With the vigorous development of new material science, the quality requirements for silicon carbide powder are getting higher and higher. In the production of high-quality silicon carbide powder, the classification of coarse and fine silicon carbide powder particles is the most important and technically difficult. Relatively high technical aspects.

      The principle is that micron powder particles of different particle sizes have different settling speeds. That is, by adjusting the water supply speed, the sinking speed of the micro powder is changed. The water supply speed exceeds the falling speed of the micro powder, and the micro powder flows out from the shunt. The larger the micro powder particles, the faster the falling speed, and the smaller the particles, the slower the falling speed. Continu. ously supply water stably for a certain period of time, so that the water level forms a certain rising speed. When the rising speed of the water level is greater than the settling speed of the micro-powder particles, this part of the particles overflows from the overflow tank. The inspector observes through a microscope and classifies according to the Japanese standard.