C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/54
C01B 31/36 (2006.01) B03C 1/00 (2006.01)
Patent
CA 1275558
PRODUCTION OF SILICON CARBIDE WITH AUTOMATIC SEPARATION OF A HIGH GRADE FRACTION ABSTRACT OF THE DISCLOSURE Method of producing silicon carbide and of automatically separating a high grade fraction thereof using magnetic separation techniques. In the method of the invention, a silicon source, a carbon source and a ferromagnetic element source are admixed and the admixture is heated from the center outward to form a cylinder containing silicon carbide with a center to exterior temperature gradient. The ferromagnetic element migrates from the hotter center to the cooler exterior portions of the cylinder. The cylinder is cooled and crushed. The lower grade silicon carbide particles are then separated from the high grade silicon carbide crystals using magnetic separation means.
520852
Anderson Robert O.
Guichelaar Philip J.
Seider Robert J.
Anderson Robert O.
Gowling Lafleur Henderson Llp
Guichelaar Philip J.
Kennecott Mining Corporation
Seider Robert J.
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