Flash drying is a drying method for solid fluidization.The dryer is capable of mechanical dispersion and adiusting the granule size of materials,high humidity paste type.After the filtercake type materials enter the dryer,they mix with the heated hot air,under the action of hot air and mechanical dispersion force they appear granular fluidization and instantaneously finish heat and mass exchange.The dried materials are taken in the collector as powder products.