Patent ID: 7004327

Claim:
A separating apparatus for the sink-and-float separation according to density of a mineral raw material using a liquid, the separating apparatus comprising; a drum rotatable about a drum axis for holding a quantity of the liquid as a liquid bath, the drum including a plurality of sink-product pockets disposed on an inner circumference of the drum for discharging a sink product of the mineral raw material; a raw material inlet for delivering the raw material into the liquid bath; a first liquid inlet disposed at a top level of the liquid bath; a first liquid outlet opposite the first liquid inlet and at the top level of the liquid bath, the first liquid outlet including an overflow for separating a float product of the raw material; a second liquid inlet; a second liquid outlet disposed opposite the second liquid inlet and at a same height as the second liquid inlet, each of the raw material inlet, first and second liquid inlets and first and second liquid outlets being arranged parallel to the drum axis, a front deflecting barrier; and a rear deflecting barrier, wherein each of the front and rear deflecting barriers project into the liquid bath from above and are disposed over an entire width of the liquid bath transversely to a flow direction of the liquid, and wherein the front deflecting barrier is disposed just behind the raw material inlet in the flow direction and the rear deflecting barrier is arranged at an approximate center between the first liquid inlet and the first liquid outlet so as to divide a layer of the float product.