A method and device are used for separating particles of plastic foil from organic material. The device includes a chamber with a perforated wall. A mixture of particles of plastic foil and organic material is fed into the chamber through a feed opening. The mixture is set into a rotating movement inside the chamber by a rotor. In the vicinity of the perforations, the centrifugal force to which a particle is subjected is at least fifty times greater than the gravitational force to which the particle is subjected. An airflow is generated in the chamber parallel to the rotational axis of the rotor. Particles of organic material leave the chamber through the perforations. Particles of plastic foil are carried along by the first airflow and then discharge through an opening in the chamber.

A corn cob harvesting machine includes a tractor, cob harvester, and trailer that together lift, clean, and separate corn cobs from a corn harvester combine chaff windrow. The cob harvester has a floating cob lift immediately adjacent to and through various skirts engaging the earth that is supported by and floats with respect to a support frame. The floating cob lift has a rotary paddle that lifts and throws cobs into the first cross draft separator. The first cross draft separator has a blower that generates a vacuum within the floating cob lift. An adjustable flap intermediate between rotary paddle and blower deflects cobs and other heavier matter out of the air stream, while lighter matter is removed. A first cross draft separator removes chaff, a rock trap separates rocks, and a second cross draft separator removes additional chaff. A discharge conveyor transfers cleaned corn cobs to the trailer.

A corn cob harvesting machine includes a tractor, cob harvester, and trailer that together lift, clean, and separate corn cobs from a corn harvester combine chaff windrow. The cob harvester has a floating cob lift immediately adjacent to and through various skirts engaging the earth that is supported by and floats with respect to a support frame. The floating cob lift has a rotary paddle that lifts and throws cobs into the first cross draft separator. The first cross draft separator has a blower that generates a vacuum within the floating cob lift. An adjustable flap intermediate between rotary paddle and blower deflects cobs and other heavier matter out of the air stream, while lighter matter is removed. A first cross draft separator removes chaff, a rock trap separates rocks, and a second cross draft separator removes additional chaff. A discharge conveyor transfers cleaned corn cobs to the trailer.

A method for separating a particulate stream of an evaporite mineral feedstock, the method comprising passing the stream to an air classifier configured to separate the particulate stream into a fine component and a coarse component.

A device and system applicable to separating components of a slurry is disclosed. The slurry can be a mixture of drilling fluid and drilling cuttings that can be separated with a separatory screen. A separatory tray can be disposed below an underside of the separatory screen. A pressure differential pan can provide fluid flow to a sump. A pressure differential generator can be located within the pressure differential pan and create a pressure differential between an upper side and a lower side of the separatory screen to enhance the flow of drilling fluid through the separatory screen.

A material sorting apparatus 100 for sorting materials in a material stream comprises: a material intake means 102 for receiving material that is input to the material sorting apparatus 100; at least one screening means 103 located downstream of the material intake means 102; at least one material separation means 104-106 located downstream of the material intake means 102; at least one conveyor means 107 for conveying material along a path within, around and/or proximal to the material sorting apparatus; and an elongate support means 101 adapted for supporting the material intake means 102, the at least one screening means 103, the at least one material separation means 104-106 and the at least one conveyor means 107.

An air knife includes a tubular housing having first and second longitudinally spaced ends, a side wall, an interior, and an aperture configured to be connected to a source of pressurized air. The side wall includes at least one opening, and a nozzle is mounted at the at least one opening, the nozzle including a nozzle inlet in fluid communication with the at least one opening, a nozzle outlet spaced from the nozzle inlet, and a nozzle interior. A plurality of baffles are located in the nozzle interior, each of the baffles having a first end at the nozzle inlet and a second end at the nozzle outlet, and the second end of each of the baffles is longitudinally offset from the first end of each of the baffles.

An air knife includes a tubular housing having first and second longitudinally spaced ends, a side wall, an interior, and an aperture configured to be connected to a source of pressurized air. The side wall includes at least one opening, and a nozzle is mounted at the at least one opening, the nozzle including a nozzle inlet in fluid communication with the at least one opening, a nozzle outlet spaced from the nozzle inlet, and a nozzle interior. A plurality of baffles are located in the nozzle interior, each of the baffles having a first end at the nozzle inlet and a second end at the nozzle outlet, and the second end of each of the baffles is longitudinally offset from the first end of each of the baffles.

In batchwise operation, the granulate grains (4) are filled into the dedusting container (9), which has no closure element at the lower granule outlet opening (25) and in which the whirling nozzles (31) for introducing compressed air are arranged in a lower cone (28), andin particular depending on the filling level in the intermediate container (14) beloware filled into the dedusting container (9) either dropped downwards without counterflow (32), dedusting being effected by conveying out the introduced air, optionally due to the negative pressure at the upper air outlet opening, whereby only freely suspended dust particles are sucked off or already during the filling process a counterflow (32) is introduced, which partially does not allow the filled granulate grains (4) to fall through the granulate outlet opening (25) but holds them quasi floating at the level of the lower third or lower quarter of the dedusting container (9). By controlling the counterflow (32), the height of the reversal area (30) of the highly turbulent granulate grains (4) and also the residence time of the granulate grains (4) in the dedusting container (9) can be controlled, so that the device can also be operated in continuous operation.

The invention relates to a pneumatic grain sorter comprising a conduit which has a grain inlet, a first air inlet, a second air inlet, a deflector between the first air inlet and the second air inlet coinciding with the grain inlet, such that the deflector divides the conduit into a first section and a second section, an upper outlet, and a lower outlet, wherein the grain inlet introduces grains into the conduit which are reached by an airflow introduced by the first air inlet into the second section of the conduit, and raises smaller grains to the position of the second air inlet, while larger grains are not raised and they are guided to the first section.