James H Macfarlane

US Patent:

58233547, Oct 20, 1998

Filed:

Jan 16, 1996

Appl. No.:

8/585097

Inventors:

Alexander Elkind - Mt. Laurel NJ
James MacFarlane - Collingswood NJ
Mark Krymsky - Langhorn PA
Victor Nikolaevich Tisenko - St. Petersburg, RU
German Abramovich Shneerson - St. Petersburg, RU
Vyacheslav Semenovich Korolev - St. Petersburg, RU
Sergey Ivanovich Krivosheev - St. Petersburg, RU
Alexey Pavlovich Nenashev - St. Petersburg, RU
Vladimir Markovich Vasilevskiy - St. Petersburg, RU

Assignee:

Rustec, Inc. - Camden NJ

International Classification:

B03C 100

US Classification:

209212

Abstract:

An apparatus for separating and sorting non-ferrous metals from other materials is provided which has a ferromagnetic core, an infeed conveyor for positioning materials to be separated and sorted, and a collecting bin or container located at a selected distance from the infeed conveyor for collecting separated and sorted non-ferrous metals, and which produces an electromagnetic field which provides a non-steady state, non-uniform magnetic field, and a sharp skin effect in the non-ferrous metal piece. Also provided is a method for separating and sorting non-ferrous metal pieces from other materials wherein non-ferrous metal pieces are subjected to a non-steady state, non-uniform magnetic field so that a sharp skin effect is produced in the non-ferrous metal piece so that the non-ferrous metal piece is separated and sorted according to its density and independent of its conductivity.