Apparatus for reclaiming metal values from slag

Claim 1

IN APPARATUS OF THE CHARACTER DESCRIBED, A FRAME, A GRIZZLY SUPPORTED BY THE UPPER PORTION OF SAID FRAME AND ADAPTED TO SCREEN THERETHROUGH MATERIALS HAVING METALLIC VALUES, A SHAKER FEEDER DISPOSED DIRECTLY BELOW SAID GRIZZLY AND ADAPTED TO RECEIVE THE SCREENED MATERIAL, A MAGNETIC SEPARATOR DISPOSED DIRECTLY BELOW SAID FEEDER AND ADAPTED TO SEPARATE THE SCREENED MATERIAL INTO TWO COMPONENTS, THE FIRST OF WHICH CONTAINS METAL VALUES IN APPRECIABLE QUANTITY AND THE SECOND OF WHICH IS SUBSTANTIALLY FREE OF METAL VALUES, A FIRST CONVEYOR HAVING A RECEIVING PORTION DISPOSED BELOW SAID MAGNETIC SEPARATOR AND ADAPTED TO RECEIVE AND CARRY SAID FIRST COMPONENT TO A HIGHER LEVEL THAN THAT OF SAID SEPARATOR, A SCREEN HAVING UPPER AND LOWER DECKS ON WHICH SAID FIRST COMPONENT FALLS FROM SAID FIRST CONVEYOR, MEANS FOR VIBRATING SAID SCREEN, A SEPARATE CHUTE AND CONVEYOR ASSOCIATED THEREWITH FOR DISPOSING OF EACH OF COARSE AND LESS COARSE FRACTIONS OF SAID FIRST COMPONENT WHICH ARE EJECTED BY THE UPPER AND LOWER DECKS RESPECTIVELY OF SAID SCREEN, A REVERSE POLARITY MAGNETIC DRUM SEPARATOR WITH VARIABLE FIELD INTENSITY DIRECTLY BELOW SAID SCREEN, A HOPPER DIRECTING THE FINE MATERIAL COMPRISING THE REMAINING FRACTION OF SAID FIRST COMPONENT WHICH PASSES THROUGH BOTH DECKS OF SAID SCREEN ONTO SAID LAST NAMED SEPARATOR WHERE IT IS SEPARATED INTO HIGHER AND LOWER MAGNETIC COMPONENTS, A SEPARATE CHUTE AND CONVEYOR ASSOCIATED THEREWITH FOR DISPOSING OF EACH OF SAID MAGNETIC COMPONENTS; ANOTHER CONVEYOR DISPOSED AT A LEVEL BELOW SAID FIRST CONVEYOR FOR RECEIVING AND TRANSPORTING AT LEAST A PORTION OF SAID SECOND COMPONENT, AND MEANS FOR DIRECTING SAID SECOND COMPONENT FROM SAID MAGNETIC SEPARATOR TO SAID ANOTHER CONVEYOR.