Classifying – separating – and assorting solids – Magnetic – Paramagnetic
Patent
1974-09-27
1976-10-05
Halper, Robert
Classifying, separating, and assorting solids
Magnetic
Paramagnetic
209223R, 209232, B03C 100
Patent
active
039843092
ABSTRACT:
A continuous flow magnetic particle separator and accompanying classification method is disclosed for ferromagnetic and paramagnetic particles. A magnetic field is generated, preferably by a coil or solenoid mounted interiorly of a cylindrically configured ferromagnetic conductor. The classification volume is located in a typically toroidal volume interior of the magnetic field. The field is typically confined by a ferromagnetic conductor where it passes externally of the classification or toroidal volume. The toroidal volume is positioned so that lines of magnetic intensity from the field extend transversely to toroidal volume at the flow from input to collectors. The classification volume has a large gap in the vicinity of the input and tapers to a smaller gap in the vicinity of the concentrate (or magnetic particle) and tailings (or non-magnetic particle) collectors. The concentrate collectors are immediately adjacent to both walls of the toroidal classification volume. The tailings collector is between the concentrate collectors. Where a ferromagnetic conductor is conformed to the classifying volume walls, concentration of a three-dimensional magnetic field results. As a result, the collection area for non-magnetics or tailings can be maximized, and the collection area for the magnetics or concentrates can be minimized with the resultant inevitable entrainment of non-magnetic tailings in the concentrate held to a minimum. Further, the magnetic field assists magnetic particles in passing through the classifier. Water washing of the concentrate exit to prevent magnetic clogging is disclosed.
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Allen James W.
Iannicelli Joseph
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