Patent ID: 7841474

Claim:
A system for separating particles having varying degrees of magnetism comprising: a substantially nonmagnetic, generally cylindrical, rotatable elongated shell having a pair of opposing open ends, an inner surface, and an outer surface; means for directing particles to be separated onto said outer surface of said shell; a magnet assembly substantially contained within said shell for magnetically separating said particles directed onto said outer surface of said shell, said magnet assembly including a rotatable, elongated magnetic roll with an outer cylindrical surface; closure means for closing said opposing open ends of said shell so as to substantially prevent contaminates from contacting a portion of said magnet assembly within said shell; adjustable means for movably contacting said inner surface of said shell with said outer cylindrical surface of said magnetic roll to enable rotation of said shell and said magnetic roll; and drive means for inducing rotational movement of said magnet assembly and said shell without slippage therebetween.