Premium vijimech supplies air classifiers. These air classifiers are screenless machines, which are used for grading offline powder into distinct coarse and fine grades from 60 mesh down to 40 microns. The air classifiers are manufactured in closed tolerance and wellbalanced to provide trouble-free operation for years. This air classifier has one drawback which is, conventional vibrating screens have choking problems along with low capacity when used for fine powder sepration. The separation efficiency is also reduced. Working of this air classifier include:the air classifier type separating machines can be operated in closed circuit with existing equipment, such as feed from the hopper, bins, pulverisers, cyclone, etc. Materials are fed through the top input pipe down on a revolving distributor plate. The fluidised particles are propelled to the sides of the inner cone by whizzer blades and separated from the recirculating air stream between the inner and outer ring. Air is passed back into the inner cone through the deflector ports.