The water content of Perlite raw ore sand is generally 4-6%, which can be dried by the natural gas preheating furnace. The crushing method of Perlite: the stone is sent to the jaw crusher by the vibrating feeder evenly for coarse crushing, the material after coarse crushing is sent to the Perlite crusher by the belt conveyor for further crushing, and the material after fine crushing is sent to the vibrating screen for screening, Materials that meet the requirements for finished product particle size (1mm-0.149mm) are sent to the finished product storage bin; The materials that do not meet the grain size requirements of the finished product are returned from the vibrating screen to the Perlite crusher for reprocessing, forming a closed circuit multiple cycles. The particle size of finished products can be graded according to user needs.