Combination roll-type magnetic and electrostatic separator and m

Details Combination roll-type magnetic and electrostatic separator and m Combination roll-type magnetic and electrostatic separator and m

1987-01-08

1989-11-21

Peters, Jr., Joseph F.

Classifying, separating, and assorting solids

Magnetic

209231, 209130, 209 12, B03C 102

Patent

active

048820431

ABSTRACT:
The disclosed invention provides method and apparatus for the separation of diamagnetic and paramagnetic particulate material. The invention utilizes a magnetic roll formed of either alternating permanent magnet and nonmagnetic spacer disc elements or alternating saperdisc elements and disc elements in which magnetism is induced. The dry admixture to be separated into magnetically homogeneous fractions is fed as a plurality of discrete streams onto spaced points on the upper surface of the rotating roll. The feed material undergoes lateral separation on the face of the roll and the materials of different properties part from the surface of the roll at different angular positions, thereby enabling their separate collection. For this purpose a plurality of receptacles are provided in a horizontally spaced relationship to collect the individual streams of diamagnetic material as they leave the surface of the rotating roll. In the preferred embodiments the streams of diamagnetic material off of the last roll pass through a high voltage field whereby they undergo an electrostatic separation.

REFERENCES:
patent: 411899 (1889-10-01), Moffatt
patent: 676841 (1901-06-01), Edison
patent: 994870 (1911-06-01), Payne
patent: 1116951 (1914-11-01), Sutton et al.
patent: 1962358 (1934-06-01), Orvis
patent: 2180804 (1939-11-01), Fahrenwald et al.
patent: 3439808 (1969-04-01), Sommermeyer

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