Difference between spray-dried polyaluminum chloride and roller-type polyaluminum chloride spray drying: liquid raw material - pressure filtration - spray tower spray drying - the finished product roller aluminum polychlorination production process, general drying: liquid raw materials - - Placement - Drum Drying - The finished sprayed polyaluminum chloride is atomized into fine particles while being dried. This granule formulation has good application properties. Polyaluminum chloride is a water-soluble substance, has good thermal stability and high solubility, in the drying process, the 40% -50% solid content of the polyaluminum chloride solution is introduced into the high-pressure pump, pressurized After entering the dryer atomizer, dispersed into tiny droplets, the droplets are dried to obtain a granular product, so that the drying and granulation at the same time completed.