Metal powder production by direct reduction in an arc heater

Details Metal powder production by direct reduction in an arc heater Metal powder production by direct reduction in an arc heater

1975-03-10

1976-11-02

Stallard, W.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 10R, B22F 900

Patent

active

039895114

ABSTRACT:
A process for the production of metal powder from an ore by direct reduction in an arc heater characterized by the steps of introducing a finely divided ore into a plasma arc to effect direct reduction of the ore to small solid particles of elemental metal in a reducing atmosphere and quenching the metal particles to form solid metal powder, the metal having a melting point greater than the temperature of the chemical reduction reaction, such metal being, for example, molybdenum, tungsten, tantalum, or niobium.

REFERENCES:
patent: 3475158 (1969-10-01), Neuenschwander
patent: 3765870 (1973-10-01), Fey et al.
patent: 3851136 (1974-11-01), Venus et al.
patent: 3852061 (1974-12-01), Wulff
patent: 3862834 (1975-01-01), Waclawiczek

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