Silicon carbide ultrafine grinding equipment mainly are mainly include mixing mill, air mill, vibration mill and ball mill. The traditional ball mill is put in the market in very earlier times. It is stable, but has low efficiency, energy consumption, and also increasing the difficulty of grading. Vibration mill grinding effect is not bad, but its high energy consumption, work noise so that fine grinding of silicon carbide of hard material will cause wear seriously. What is more, it also has airflow mill production efficiency, and low production capacity.