JET-WHEEL IMPACT ATOMIZER FOR SPRAY DRYING AND A PROCESS FOR THE PREPARATION OF FINELY DISPERSED SPRAY OF SLURRY/LIQUID

摘要

The present invention provides an atomizer for producing finely dispersed spray of slurry and a process for the preparation of free flowing spray dried alumina powder. Suspended solid in liquid is used as the feed slurry which is ejected from a nozzle in the form of a jet to hit against the toothed surface of a rotating wheel to cause atomization. The sprayed droplets are dried inside an associated drying chamber and collected through a screw conveyor at the bottom of the chamber. The slurry includes ceramic, inorganic and organic compounds, food, drugs and Ayurvedic products. The liquid carrier includes water, aqueous, non aqueous inorganic and organic liquid, and precursor sol. Spheroidal/rounded grain spray dried powders are produced by the new type of atomization process.