| 20110000827 | AIR SIEVING METHOD AND APPARATUS - An air sieving apparatus capable of sieving particles in a particle size range below 50 μm includes a cylindrical screening case defining an internal space and provided with a screen dividing the internal space into an upper space and a lower space. Powdered material is fed through a powdered material feed opening onto a bottom plate disposed to cover the lower open end of the screening case with gaps formed therebetween. Air in the screening case is sucked upward by a suction blower. The fed powdered material is dispersed by currents of air sucked through the gaps and the dispersed powdered material is sucked upward. Fine particles that have passed through the screen | 01-06-2011 |
