Magnetic drum separator

Details Magnetic drum separator Magnetic drum separator

1994-12-29

1997-06-10

Terrell, William E.

Classifying, separating, and assorting solids

Magnetic

Paramagnetic

209213, 209228, B03C 100

Patent

active

056367481

ABSTRACT:
A magnetic drum separator for separating components having different magnetic properties out of an aggregate material employs a drum rotatably driven on a longitudinal axis. The drum has a cylindrical shell sidewall to have an open interior wherein a magnetic array is disposed. The magnetic array is formed by a plurality of longitudinally extending and circumferentially spaced ferromagnetic bars. A first magnet is disposed between each pair of circumjacent bars, and circumjacent first magnets have similar magnetic poles facing the bar located therebetween. Second magnets extends longitudinally and a second magnet is located radially inwardly of each of a majority of the bars. Circumjacent second magnets have oppositely oriented polarities, all in the radial direction, and each second magnet has a similar pole facing the respective bar as those of the first magnets. The array is supported by an arcuate support plate and a pair of brackets secured to a rigid shaft about which the drum rotates. The array has an arcuate active surface in closely-spaced relation concentric to the drum sidewall, and this arcuate surface preferably extends between 45.degree. and 120.degree. of arc.

REFERENCES:
patent: 1414170 (1922-04-01), Bethke et al.
patent: 2535719 (1950-12-01), Blind
patent: 2959288 (1960-11-01), Fowler
patent: 2992738 (1961-07-01), Maynard
patent: 3552565 (1971-01-01), Fritz
"Rare Earth Permanent Magnetic Separators and Their Applications in Mineral Processing", Presented at the Society for Mining, Metallurgy, and Exploration, Inc., Annual Meeting, Feb. 1993.

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