| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a metal recovering device, in which zinc and lead can be recovered in high yield from dust containing metallic oxide, such as the dust of an electric furnace. SOLUTION: The dust containing the metallic oxide of zinc oxide, lead oxide, etc., is heated. in vacuum in a closed vessel 1 to reduce the metallic oxides and vaporize metallic components. Gas sucked from the closed vessel 1 is passed through recovering devices 11a, 11b holding the temp. to solidified temp. or lower of the zinc to condense the metallic components in the gas. Then, pressure recovering gas such as inert gas, etc., is supplied and heated into the recovering device to melt and flow out the condensed metal stuck to the recovering devices 11a, 11b.</p> |
