| 摘要 |
<p>A method of recovering non- volatile metals from dust containing metal oxides, e.g. flue dust comprises blowing the material into the lower portion of a reactor 1 containing a solid reducing agent, passing said starting material into a reduction zone within said lower portion, said reduction zone being maintained by the use of a plasma generator 3 adjacent thereto, substantially instantaneously reducing and melting said starting material in said reduction zone, and removing the melted and reduced metal product from the bottom of the reactor. A portion of furnace off-gas may be used as feed gas to convey the dust to the reactor and as plasma gas. The remaining off- gas may be used for electricity generation. Carbon powder and flux may be added with the feedstock. <IMAGE></p> |
