Continuous feed shaft retort process for recovery of non-ferrous metals from process dust
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United States of America Patent
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Oct 16, 1990
Grant Date -
N/A
app pub date -
Mar 14, 1989
filing date -
Mar 14, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for recovering primary metals from pyrometallurgical process dust, in which a vertical shaft retort, situated in a furnace or afterburner associated with a pyrometallurgical apparatus, such as an inclined rotary reduction smelter, and preferably having a tapered cross-section with the larger end at the bottom, receives greenball pellets from a pelletizer, vaporizes volatile metal metals therein, and removes them to an associated volatile metal recovery apparatus, while reducing and recovering the major metal oxide components in the pellets in metallized form.
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