| 摘要 |
<p>Apparatus for the simultaneous smelting and refining of metal ores comprises a chamber (1) having parabolic-shaped internal top and bottom walls and a carbon electrode extending transversely across the chamber (1). Optionally the electrode is held between water cooled holders (8) which pivot in collars (6). Ore, for examplecassiterite, is placed in the chamber (1), the chamber sealed and the electrode heated by the passage of high current at low voltage to white heat for sufficient time to reduce the ore to substantially pure metal. Typical current and voltage values are up to 600 amps and up to 72 volts.</p> |
