An apparatus for separating material includes a frame and a rotatable sleeve supported by the frame. The sleeve has a first end, a second end, and a wall with a plurality of apertures to permit material smaller than a first size to fall through the apertures. A source of forced air is arranged to force air through an interior of the sleeve.

An apparatus for separating material includes a frame and a rotatable sleeve supported by the frame. The sleeve has a first end, a second end, and a wall with a plurality of apertures to permit material smaller than a first size to fall through the apertures. A source of forced air is arranged to force air through an interior of the sleeve.

An apparatus for separating material includes a frame and a rotatable sleeve supported by the frame. The sleeve has a first end, a second end, and a wall with a plurality of apertures to permit material smaller than a first size to fall through the apertures. A source of forced air is arranged to force air through an interior of the sleeve.

The present invention relates generally to utilizing gasses for fragmenting polymeric materials and simultaneously modifying the surface area molecular structure of the said polymeric materials. More particularly, the present invention relates to a method and associated device for the processing of already preliminarily deformed polymeric materials, preferably without metal reinforcing elements, by utilizing aggressive gasses to both modify the polymeric materials surface area into an activated state and also simultaneously fragment the fed preliminarily deformed polymeric materials into a powder-like form with a relatively increased surface area.

The invention relates to A powder production system comprising a body (2), at least one mill (3) located on the body (2) so as to rotate about its axis, more than one ball (b) being located in the mill (3), the balls (b) acting on a material to be ground (m) therein by exerting frictional and impact forces on the material to be ground (m) so that the material to be ground (m) is brought to a powder form, and at least one gas supply unit (7) located on the body (2), therebyenabling gas (g) to flow into the body (2).