| 摘要 |
<p>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.</p> |
