Magnetic techniques for separating non-magnetic materials

Details Magnetic techniques for separating non-magnetic materials Magnetic techniques for separating non-magnetic materials

1978-01-17

1980-02-05

Turk, Arnold

Classifying, separating, and assorting solids

Miscellaneous

209 8, 209 39, 209214, 210222, B03B 100, B03C 100

Patent

active

041871707

ABSTRACT:
A process for magnetically separating non-magnetic material from a mixture by combining the mixture with a magnetizing solution containing the salt of a magnetic element. The magnetic atoms attach to available sites on the molecules of the non-magnetic material so as to develop in that material a positive susceptibility. Thus the material is responsive to the influence of a magnetic field to move the material to a region where it can be analyzed or recovered. Materials with low positive or negative susceptibilities are separated by suspending them in a magnetic salt solution which when subjected to the attraction of a magnetic field develops a differential buoyancy force, pushing the diamagnetic or weak paramagnetic material strongly away from the magnet. Disclosed are solutions of ferric chloride, manganese chloride, erbium chloride, dysprosium chloride, terbium chloride, and holmium chloride.

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West et al., "Handbook of Chemistry and Physics-47th edition", The Chemical Rubber Co., Cleveland, Ohio, 1966, pp. E-103 to E-108.

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