Paste material from the filter press in the heater by stirring preliminary crushed by screw feeder into quantitative stream dryer section, on the fluidization section by the mixer further centrifugation, crushing, drying process of fresh air introduced by the filter, the heating period of heating to the required temperature, into the hot air distributor, the dryer the bottom slot for large wind speed in the fluidization section, fully contact with the material is stirred, magnesium salt flash dryer, which makes the material forming the fluidized state begins to boil.

The extraction and concentration by centrifugal force, shear, collision, friction and by the particle is highly fragmented and gas-solid two phase relative velocity is larger, strengthen mass transfer and heat transfer, the production of high strength; have strong rotational flow dry gas enters into the bottom of the dryer, and exerts strong rushing effect on the wall. The material, eliminate the phenomenon of adhering wall.

The rotary spray dryer is formed by cutting the hot air into the bottom of the dryer and forming a powerful rotating wind field under the driving of the agitator. Paste material from the spiral feeder into the dryer, the strong function of high speed rotating impeller, dispersed material impact, friction and shearing force, the bulk material rapidly crushing, hot air and full contact, heated and dried.