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AssigneeEnerco, Inc.
InventorsHeinrich Emil Jerzembski, Jan Bot
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The invention relates to a device for the sink and float separation of mineral raw materials, particularly coal, according to density by means of a liquid, particularly a dense medium. The device comprises a separating container (1) with a cylinder (2) arranged in a rotatable manner therein for extracting the sunken items. The separating container comprises inlets (6; 10, 11) for the liquid and for the raw material which is to be separated, in addition to at least one outlet (12, 13) for the liquid, and one overflow (13) for separating the floating items. The inlets and outlets (10, 11; 12, 13) are arranged in a parallel position with respect to the axis of rotation of the cylinder (2). According to the invention, at least two respective inlets and outlets (10; 11; 12, 13) are provided for the liquid, being arranged, respectively, opposite each other in pairs on a specific height. At least one inlet and one outlet (10; 13) and the overflow (13) are arranged on the same levels as the liquid and at least one pair of inlets and outlets (11, 12) are disposed directly above the pockets of the sunken items (3) which are distributed over the periphery of the outer surface of the drum. The invention also relates to a corresponding method for the sink and float separation of mineral raw materials.
An apparatus for the sink-and-float separation of mineral raw materials, in particular coal, according to density by means of a liquid, in particular a dense medium, consisting of a separating vessel (1) having a drum (2) rotatably arranged therein for the discharge of the sink product, the separating vessel having inlets (6, 10, 11) for the liquid and the raw material to be separated and at least one outlet (12, 13) for the liquid and an overflow (13) for separating the float product, wherein the inlets and outlets (10, 11;
A method for the sink-and-float separation of mineral raw materials, in particular coal, according to density by means of a liquid, in particular a dense medium, in which liquid is fed via inlets into a separating vessel having a drum rotatably arranged therein and is discharged via outlets, arranged at the opposite side at the same height, in such a way that in the separating vessel a liquid bath builds up, the level of which lying approximately at the height of the axis of rotation of the drum, and a horizontal flow parallel to the axis of rotation of the drum from the inlet to the associated outlet results inside the liquid bath, the feed material to be separated being delivered parallel to the liquid in such a way that it plunges into the liquid bath and is caught by the liquid flow, the float product on the side opposite the feed being separated by means of an overflow, and the sink product sinking through the liquid bath, characterized in that at least two horizontal uniform and essentially laminar liquid flows are formed which only transport float product to the discharge side and of which at least one lies directly at and below the liquid level and at least one lies just above sink-product pockets (3) distributed over the circumference of the drum shell.
Dependencies are inferred from the claim text.