Method of manufacturing, concentrating, and separating enhanced

Details Method of manufacturing, concentrating, and separating enhanced Method of manufacturing, concentrating, and separating enhanced

1987-06-19

1989-05-30

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

75 05C, 164463, 164477, 209 8, 209214, 209215, 241 24, 241 791, H01F 102

Patent

active

048348112

ABSTRACT:
Disclosed is a method for separating initially non-magnetized ferromagnetic material. The material has a distribution of magnetic parameters, and is separated into a first fraction having relatively high magnetic parameters and a second fraction having relatively low magnetic parameters. The method comprises applying a magnetic field to the materials, the magnetic field being high enough to magnetize the low magnetic parameter fraction, but low enough to avoid substantial magnetization of the high parameter fraction. Thereafter the fractions of material are magnetically separated.

REFERENCES:
patent: 2954122 (1960-09-01), Colburn
patent: 3684090 (1972-08-01), Kilbride
patent: 4478711 (1984-10-01), Cohene et al.
Davis, C. W., "Practical Aspects of Alternating-Current Magnetic Separation", RI 3268 Bureau of Mines, Feb. 1935.

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