37 as the drum surface revolves past the magnetic field created by magnet 35 and passes discharge chute 41 the metallic particles are released and fall down chute 41 to a waste bin 43 the non metallic material passing down hopper chute 37 falls into a surge hopper 39 surge hopper 39 is positioned above a screw conveyor 45 which is motor driven through a gear reducer preset to provide a controlled discharge rate of material into the top of the reclaimer vessel 47 vessel 47 includes a preheat chamber 49 a calcining chamber 51 located directly beneath the preheat chamber 49 in vertical fashion and a cooling chamber 53 similarly located beneath the calcining chamber 51 gate means comprising a series of chutes 55 57 and 59 having dribble valves 61 63 and 65 respectively allow metered flow of material downwardly between successive chambers and out of the vessel fig2 is an exploded view of a dribble valve 61 including a frame 67 top 69 and paddle 71 when top 69 is removed paddle 71 is inserted within recess 73 of frame 67 a shaft 75 extends from either side of paddle 71 and rides in cylindrical openings 77 and 79 a counterweight 81 is attached to the end of shaft 75 extending from opening 79 with top 69 in place paddle 71 can move to.