| 摘要 |
<p>A generally tubular furnace (1) for the separation and recovery of two or more metals of different melting points comprises means (13) for collecting in molten form a lower-melting point component and means for rotating the furnace about a generally horizontal longitudinal axis, whereby a solid higher melting point component remaining after firing may be tipped out of the furnace through a discharge aperture (24) in a circumferential wall of the furnace. <IMAGE></p> |
