Classifying – separating – and assorting solids – Magnetic
Patent
1977-10-20
1979-10-23
Halper, Robert
Classifying, separating, and assorting solids
Magnetic
209223R, 209225, B03C 110
Patent
active
041720300
ABSTRACT:
Non-magnetic metal particles are separated from a mixture by an inclined rotating electrically insulating drum and the action of travelling electromagnetic field. The mixture is introduced at the upper end of the inclined drum which is supported by a rotary iron core through support rods. The rotary iron core and drum are rotated in one direction. Simultaneously, a shifting electromagnetic field is generated along the lower part of the outer periphery of the drum in a direction opposite to the direction of rotation of the drum. As a result, the mixture as it travels through the drum is repeatedly brought upwardly in the direction of drum rotation along the inner surface of the drum due to the frictional force between the mixture and the drum inner surface or upwardly in the direction of the shifting electromagnetic field and then tumbled down onto the bottom of the drum. This process provides a complete stirring of the mixture and promotes the separation of the non-magnetic metal particles irrespective of relative particle sizes.
REFERENCES:
patent: 1083979 (1914-01-01), Zander
patent: 1414170 (1922-04-01), Bethke
patent: 1417189 (1922-05-01), McCarthy
patent: 3659311 (1972-05-01), Waren
patent: 4046679 (1977-09-01), Schloemann
Watanabe Toshiharu
Yasumochi Ryutaro
Fuji Electric & Co., Ltd.
Halper Robert
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