Magnetic decontamination device and method
OwnerClifford Roy Warnerinventor
Life of this patent
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Abstract
A device and method for removing metalliferous particles from a powder so that the powder can be reused. A contaminated powder fluid stream flows down tube (6/7) into zones A, B and C adjacent the surface of a magnet (4). The flow flows past the surface of the magnet (4) and is directed towards the surface of the magnet (4) by baffles (10A, 10B). The magnet (4) separates metallic particles from powder particles and these metallic particles are removed from the face of the magnet (4) by scraper bars (21) conveyed by endless belts (22) supported by roller sets (23). The device can also include a fan (5) for promoting the movement of air in a counter direction to the delivered powder mixture.
Claims21
A device for removing metalliferous particles from a powder mixture contaminated therewith which comprises:
- (a) a chamber,
- (b) means comprising two tubes for delivering the powder mixture to the chamber in a fluid stream,
- (c) means for promoting movement of the mixture in a counter direction to the fluid stream,
- (d) a fixed magnet retained within the chamber in proximity to the fluid stream,
- (e) a series of baffle plates adjacent the fixed magnet for deflecting the fluid stream towards the fixed magnet,
- (f) means for the removal of the metalliferous particles attracted to the magnet.
A method of removing metalliferous particles from a powder mixture contaminated therewith which comprises directing the contaminated material through two tubes to a fluid stream within a chamber, promoting movement of the mixture in a counter direction to the fluid stream, positioning a fixed magnet adjacent an outlet from the fluid stream to attract metalliferous particles thereto, and providing a series of baffle plates adjacent the fixed magnet for deflecting the fluid stream towards the magnet and also providing means for removing the metalliferous particles attracted to the magnet.
Dependencies are inferred from the claim text.