Sanding machine is the most widely adapted, most advanced and most efficient grinding equipment, with the narrowest grinding chamber, the smallest swing bar clearance and the densest grinding energy. With the high-performance cooling system and automatic control system, sanding machine can realize continuous material processing and continuous material discharge, greatly improving the production efficiency. Sand mill also known as bead mill, mainly used for wet grinding of chemical liquid products, according to the performance of the general can be divided into horizontal sand mill, basket sand mill, vertical sand mill, etc. It is mainly composed of the body, grinding drum, abrasive disc (dial rod), grinding medium, motor and feeding pump. The speed of feeding is controlled by the feeding pump. The grinding medium of the equipment is generally divided into zirconia beads, glass beads, zirconium silicate beads and so on.