Plastic and nonmetallic article shaping or treating: processes – Spheroidizing or rounding of solid particles
Patent
1976-12-09
1978-01-31
White, Robert F.
Plastic and nonmetallic article shaping or treating: processes
Spheroidizing or rounding of solid particles
250542, B29C 2300
Patent
active
040715884
ABSTRACT:
A process for the production of magnetic spheres from grit of magnetite ore by introducing the grit into an arc heated gas jet, thus heating the grit to a temperature of at least 1600.degree. C, and allowing the melted magnetite droplets to spheroidize and cool to a solid state.
REFERENCES:
patent: 3708409 (1973-01-01), Bainbridge
patent: 3749763 (1973-07-01), Scammon, Jr. et al.
patent: 3989512 (1976-11-01), Sayce
Fey Maurice G.
Harvey, II Francis J.
Martin Paul E.
Wolf Charles B.
Hall James R.
Johns L. P.
Westinghouse Electric Corporation
White Robert F.
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