Fine grains producing apparatus

Details Fine grains producing apparatus Fine grains producing apparatus

1985-08-20

1987-01-20

Envall, Jr., Roy N.

Industrial electric heating furnaces

Plasma furnace device

Direct furnace

373 18, 219121PR, 75 05C, 75 05B, 264 10, H05H 100

Patent

active

046384880

ABSTRACT:
A toroidal pile of raw material is contained in a toroidal melting pot provided in the lower portion of a furnace and a ring plasma torch is mounted over the toroidal pile of the raw material. A ring plasma arc, driven electromagnetically and rotating azimuthally between the torch and the pile, heats a certain portion of the pile intermittently and periodically. Fine grains are produced in such portion of the pile of raw material that is not heated directly by the plasma arc and collected through a discharge port provided around the major axis of the toroidal melting pot.

REFERENCES:
patent: 3975184 (1976-08-01), Akers
patent: 4275287 (1981-06-01), Hiratake

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