Water suspension and screening type classifier

Abstract From the Canadian patent

A wet-type classifier comprising: a rotary drum which has a front outlet at its front end and a rear outlet at its rear end, a feeding means for feeding muddy water containing sand into the drum, the feeding means being enclosed by the drum disposed, concentrically within the drum and attached to the drum for rotation therewith, the feeding means having an inlet opening adjacent to the front outlet of the drum and an outlet opening adjacent to the rear outlet of said drum a, classifying means for causing sand which is contained in the muddy water to settle onto the bottom of the drum and transferring the settled sand towards the rear end of the drum the, classifying means being fixedly …