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

B - Operations, Transporting

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53/349, 18/500.1

B22F 9/00 (2006.01) B22F 9/22 (2006.01) C22B 4/00 (2006.01) C22B 34/24 (2006.01) C22B 34/34 (2006.01) C22B 34/36 (2006.01)

Patent

CA 1057508

ABSTRACT OF THE DISCLOSURE A process for the production of metal powder from an ore by direct reduction in an arc heater character- ized 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.

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