| 摘要 |
<p>The skimmed material is treated while still above the liquidus but under conditions such that burning of the metal content is avoided. The treatment is carried out in a rotary container having >=1 peripheral gap of width 1/8. to 1 inch, so that solid material of the charge is consolidated into a porous cake retained at the gap, while molten metal is discharged through the gap. The treatment is carried out without flux addn. By eliminating the use of flux, and eliminating metallic combustion, pollution and safety hazards are overcome. Up to 75% of the contained metal may be recovered.</p> |
