Separtor with improved magnet structure

Details Separtor with improved magnet structure Separtor with improved magnet structure

1996-10-31

1997-08-12

Terrell, William E.

Classifying, separating, and assorting solids

Magnetic

209219, B03C 100

Patent

active

056556640

ABSTRACT:
The disclosed eddy-current separator has several new features. One includes a magnet assembly which is metal-sleeved for protecting the magnets from impact by particles or objects piercing the waste-carrying conveyor belt with which the separator is used. A low-rotating-speed epoxy-layered shell surrounds the sleeve for additional protection. A conveying extension carries ferrous "fines" from the conveyor into the receptacle used to collect waste from which non-ferrous material has been separated. Such extension permits such fines to be under the substantial influence of the magnet assembly over an arc well less than 180.degree.. The conveyor belt uses relatively-closely-spaced cleats of reduced height to reduce the "loading" of an individual cleat with potentially-piercing ferrous fines. A two pole magnet assembly may be used and/or a magnet assembly in which the magnet pole faces are curved for air gap reduction.

REFERENCES:
patent: 2745549 (1956-05-01), Spodig
patent: 2992733 (1961-07-01), Buus et al.
patent: 4031004 (1977-06-01), Sommer, Jr.
patent: 4069145 (1978-01-01), Sommer, Jr.
patent: 4668381 (1987-05-01), Julius
patent: 5057210 (1991-10-01), Julius
patent: 5092986 (1992-03-01), Feistner et al.
patent: 5207330 (1993-05-01), Siesco, Jr.
patent: 5394991 (1995-03-01), Kumagai et al.
Elektromagnetbau Company of Cologne, Germany--Technical brochure dated Oct., 1988 - 4 pages.
Eriez Magnetic of Erie, Pennsylvania--Technical brochure dated Jul., 1991 - 4 pages.
"Eddy-Current Separator Aids Recycling" from Machine Design magazine dated Oct. 24, 1991 - 5 pages.
Osbourne Engineering, Inc. of Tulsa, Oklahoma--Technical brochure estimated date Dec., 1989 - 2 pages.
Devcon Company of Danvers, Masschusetts--brochure dated Apr., 1992 - 4 pages.

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