Method for screening vein quartz raw materials for preparing high-purity quartz sand with low gas-liquid inclusion

The invention provides a vein quartz raw material screening method for preparing high-purity quartz sand with low gas-liquid inclusion. The screening method comprises the following steps of selective crushing and dissociation, scrubbing and washing, dehydration and classification, atomization and pesticide application, surface modification, polishing and homogenization, sorting of coarse grains based on machine vision, pre-selection of tailings and discarding, screening of low gas-liquid inclusion particles based on transparency difference, and classification and utilization of different grades of raw material particles. According to the method, the screening of the high-purity quartz raw materials with low gas-liquid inclusion content and the graded utilization of the high-purity quartz raw materials with different transparencies are realized through particle size regulation, surface modification and transparency optimization of the quartz raw materials according to particle transparency difference sorting;