The present invention relates to a system for melting aluminum and recycling black dross, including an aluminum melting furnace responsible for melting aluminum scraps in molten aluminum and a black dross recycling device responsible for recycling black dross generated when the aluminum scraps are melted in the molten aluminum.

The aluminum melting furnace includes a heating chamber provided with heating units responsible for heating the molten aluminum; and a melting chamber provided with an eddy unit responsible for generating an eddy descending in a spiral in the molten aluminum, a flux supply unit responsible for adding a flux to the eddy, and a raw material supply unit responsible for adding the aluminum scraps to the eddy, wherein, in the eddy unit, black dross formed when inclusions contained in the molten aluminum are captured by the flux is repeatedly descended and floated in the molten aluminum through the eddy, so that the black dross is collected into a spherical shape to form spherical black dross, and the black dross recycling device is responsible for recycling the spherical black dross.

Separation and classification equipment for separating a mixed waste stream into first, second and third fractions. The equipment comprises a feeding member for feeding the waste stream toward a gap and a blower for discharging a stream of air for mixing with the waste stream, as the waste stream falls through the gap. The first fraction falls through the stream of air and collects in a first collection area while the stream of air carries away the second and the third fractions. A rotatable permeable member is arranged to permit the stream of air to pass therethrough and thereby force and retain the third fraction against a surface of the rotatable permeable member and be conveyed, by the rotatable permeable member, toward a third collection area while the second fraction tends to separate, from the rotatable permeable member and the third fraction, and collect in a separate second collection area.

A rotary machine includes a vessel that defines an interior for receiving materials. The vessel is mounted to rotate about an axis of rotation that extends through the vessel. The rotary machine also includes a sprocket mounted circumferentially about an exterior of the vessel so as to encircle the axis of rotation of the vessel. The sprocket includes a plurality of sprocket teeth. The sprocket defines a sprocket pitch diameter and a sprocket addendum diameter. The rotary machine also includes a drive wheel that intermeshes with the sprocket for driving rotation of the vessel about the axis of rotation of the vessel. The drive wheel includes a plurality of rollers that are received between the sprocket teeth of the sprocket. The rollers each have a roller diameter and a roller axis. The rollers are rotatable about their respective roller axes. The drive wheel has a drive wheel pitch diameter defined by the roller axes. The sprocket addendum diameter is equal to the sprocket pitch diameter plus a distance equal to at least 1.0 times the roller diameter.

A rotary machine includes a vessel that defines an interior for receiving materials. The vessel is mounted to rotate about an axis of rotation that extends through the vessel. The rotary machine also includes a sprocket mounted circumferentially about an exterior of the vessel so as to encircle the axis of rotation of the vessel. The sprocket includes a plurality of sprocket teeth. The sprocket defines a sprocket pitch diameter and a sprocket addendum diameter. The rotary machine also includes a drive wheel that intermeshes with the sprocket for driving rotation of the vessel about the axis of rotation of the vessel. The drive wheel includes a plurality of rollers that are received between the sprocket teeth of the sprocket. The rollers each have a roller diameter and a roller axis. The rollers are rotatable about their respective roller axes. The drive wheel has a drive wheel pitch diameter defined by the roller axes. The sprocket addendum diameter is equal to the sprocket pitch diameter plus a distance equal to at least 1.0 times the roller diameter.

A deflector for a mobile material separating machine includes a deflector body hingedly attached to a trommel screen frame and a conveyor movable with respect to the trommel screen frame. The conveyor has a stowed position and an operating position. The deflector system also includes an automatic linkage pivotably attached to the deflector body and to the conveyor. The linkage moves and guides the deflector body when the conveyor moves between the stowed position and the operating position.

A deflector for a mobile material separating machine includes a deflector body hingedly attached to a trommel screen frame and a conveyor movable with respect to the trommel screen frame. The conveyor has a stowed position and an operating position. The deflector system also includes an automatic linkage pivotably attached to the deflector body and to the conveyor. The linkage moves and guides the deflector body when the conveyor moves between the stowed position and the operating position.

A tie plate separator is provided and methods thereof which allow for supplying of a batch of scrap material which needs at least some separation. The separation may occur by a rotating receiver structure having a plurality of holes to allow materials of preselected size to be retained within the receiver but allow other materials to fall through the holes so as to effectively separate at least one of the constituents of the batch of materials.

A tie plate separator is provided and methods thereof which allow for supplying of a batch of scrap material which needs at least some separation. The separation may occur by a rotating receiver structure having a plurality of holes to allow materials of preselected size to be retained within the receiver but allow other materials to fall through the holes so as to effectively separate at least one of the constituents of the batch of materials.

Embodiments of a tie plate sorter are disclosed wherein the tie plates are sorted and fed to an output device for further feeding to a tie plate distribution system. The tie plates may be oriented as needed. Exemplary methods are also provided.

The invention concerns a rotary machine (1) for sorting a mixture of wastes (2), said sorting machine (1) being characterized in that it comprises at least: a first trammel section (3), provided with a first separation wall (5) extending over a first length (L1) allowing separating the mixture of wastes (2) into a first fraction of wastes (13) getting through said first separation wall (5) and into a residual second fraction of wastes (14), and a second trammel section (4), provided with a second separation wall (6) extending over a second length (L2) smaller than the first length (L1), and allowing separating the residual second fraction of wastes (14) into a subfraction of small-sized wastes (15) getting through said second separation wall (6) and into a residual subfraction of large-sized wastes (16). Wastes sorting.