GRAVITY SEPARATION OF GRANULAR MATERIALS

摘要

Apparatus for gravity separating dry granular materials has an inclined surface of porous material. To facilitate the flow of materials down the incline and the sinking of materials of higher specifice gravity or of larger size to the bottom of the stream, a gas is passed through the porous surface to fluidize the granular materials. The surface may take the form of a chute with tapering sidewalls and porous base or a circular funnel-shaped vessel of porous material.