GB225751A - Improvements relating to magnetic separators - Google Patents

Abstract

225,751. Thompson, H. H., Davies, A. E., and Box, W. March 6, 1924. Addition to 206,610. Magnetic separators. - In a magnetic separator of the type described in the parent Specification, the magnets are carried by an arcuate member a provided with lugs b bolted to feet or brackets c of non-magnetic material. The magnet cores d are secured radially to the member a and are provided with windings c and pole shoes f adjacent to the screen extension g, the uppermost shoe f being provided with a throw-off finger h. The windings e are arranged preferably so that the magnets are alternatively of opposite polarity. In a modification, the cores &c. are mounted between poles arranged so as to be parallel to the longitudinal axis of the screen and removably mounted between arcuate side cheeks of non-magnetic material. One or more magnets of the type described in the parent Specification may be mounted in short arcuate pole pieces secured to the upper or upper and lower ends of the side cheeks. In a third modification, Fig. 4, the pole pieces are formed by side cheeks o of zig-zag form. To intensify the lines of force inside the screen and parallel to the surface of the same there may be mounted thereon an arcuate armature or an arcuate strip q, Fig. 6, of non-magnetic material provided with bars r. strips or other projections. The armature may be provided with an adjustable &c. brass covering on its convex face. To assist in carrying the magnetic material round the screen g, ribs, bars, strips, feelers or other projections may be provided on the inner surface of the screen g and the surfaces and edges of the bars &c. may be serrated.