Abstract: Methods include separating feed material containing magnetic particles and non-magnetic particles using a belt and magnetic roll separator that has an idler roll and a magnetic roll carrying magnets and the methods involve positioning a feed pan or slide for directing the feed onto the belt in contact with the magnetic roll at selectable positions on the belt and at selectable angles of impact onto the belt closely adjacent and contacting the magnetic roll to provide enhanced separation by the forces of feed impact, bounce and gravity and simultaneous magnetic attraction by the magnetic roll.

Abstract: A material separator separates non-magnetic particulate material into components having differing electrical conductivities and comprises a support frame, a drum rotatably journaled with respect to the support frame, a magnetic assembly in the drum interior and a drive system. The drum's sidewall is cylindrically shaped and the magnetic assembly incudes longitudinally extending magnetic arrays, each angularly spaced from one another and rotatably journaled on a respective array axis that is radially spaced from the drum axis. The magnetic arrays include opposite magnetic poles located along a rotational surface such that when they rotate, an oscillating magnetic field is induced through the drum's sidewall. The drive system rotates the magnetic arrays and the drum so that particulate material placed on an outer surface of the drum sidewall is subjected to the oscillating magnetic field whereby components having different electrical conductivities are discharged with differing discharge trajectories.

Abstract: A magnetic drum separator for separating components having different magnetic properties out of an aggregate material employs a drum rotatably driven on a longitudinal axis. The drum has a cylindrical shell sidewall to have an open interior wherein a magnetic array is disposed. The magnetic array is formed by a plurality of longitudinally extending and circumferentially spaced ferromagnetic bars. A first magnet is disposed between each pair of circumjacent bars, and circumjacent first magnets have similar magnetic poles facing the bar located therebetween. Second magnets extends longitudinally and a second magnet is located radially inwardly of each of a majority of the bars. Circumjacent second magnets have oppositely oriented polarities, all in the radial direction, and each second magnet has a similar pole facing the respective bar as those of the first magnets. The array is supported by an arcuate support plate and a pair of brackets secured to a rigid shaft about which the drum rotates.

Abstract: A support roller and a magnetic separator incorporating the same utilizes a plurality of roller segments which are pivotally mounted to an axle member such that the roller segments are radially spaced from the axle member and extend in longitudinal parallel relation thereto. The opposite ends of the roller segments can move toward and away from the axle member. A first pair of roller segments are interconnected by a linkage that causes the first ends of the pair to move correspondingly and, due to the pivot mount, the second ends move correspondingly to one another in a direction opposite the movement of the first ends. Preferably, at least four equiangularly spaced roller segments are employed and a pair of linkages interconnect each pair of opposed roller segments. Several different linkage assemblies are disclosed. Where the support roller is incorporated in a magnetic separator, a support frame rotatably supports a magnetic roller and the support roller.

Abstract: A material separator for separating non-magnetic components from magnetic components in a material is provided. The material separator has a support frame, a magnetic roller, an idler roller and a conveyor belt. The idler roller is rotatably mounted on an inclined slideway so that tension on the conveyor belt is maintained by the weight of the idler axle and idler roller. The inclined slideways may be provided by pivot arms and adjusting elements are provided to adjust the angles of inclination to the horizontal, thereby allowing adjustability of the belt tension. Detectors monitor the tracking path of the belt so that an adjustment to the angle of inclination of one of the slideways automatically corrects deviations from the tracking path. The magnetic separator is preferably a modular unit mountable in framework having an upstream feed assembly and a downstream collection assembly, either in single or multi-stage separator apparatus.

Abstract: In a moving matrix magnetic separator in which a matrix device moves relative to a processing device and a seal assembly seals a longitudinal section of the matrix device to an associated processing device, the seal assembly including a sealing surface on one of the devices and a seal on the other, the improvement comprising said seal including a base portion extending generally longitudinally in the direction of motion of the matrix device; first and second salient, resilient lip portions extending from the base portion toward an associated sealing surface in the gap between the matrix device and the processing device, and extending generally longitudinally to the direction of motion of the matrix device and spaced from each other transversely to the direction of motion of the matrix device and forming a channel therebetween; a pressurized purge fluid chamber formed by the channel and the associated sealing surface; and means for supplying purging fluid to the purge fluid chamber formed by the channel and li