Store less than 450mm of ore in the hopper, the feeder evenly to the high purity sand. High-purity quartz sand warehouse site or ceramic liner, rotating cylinder produces centrifugal force to feed a certain height After the fall, have an impact on the material and abrasive. Meet the requirements of the powder is discharged through the discharge grate plate to complete the grinding operation. Sander output of material separated by the first separating sieve material, the purpose of coarse particles greater than 4 coarse material is returned through the mill to continue crushing the purpose of less than 4 iron through magnetic separator and then through the second channel separation sieve, sieve separated 4-6,6-8,8-16,16-26,26-40,40-70,70-120 and -120 purpose products. The whole system is equipped with highly efficient pulse bag type dust collector, ensure that the entire production process is environmentally safe and non-polluting.