Continuous feed shaft retort process for recovery of non-ferrous

Details Continuous feed shaft retort process for recovery of non-ferrous Continuous feed shaft retort process for recovery of non-ferrous

1989-03-14

1990-10-16

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75608, 75661, 75669, 75670, 75695, 75706, C21B 702

Patent

active

049631829

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.

REFERENCES:
patent: 2457552 (1948-12-01), Handwerk et al.
patent: 4260139 (1981-04-01), Oliver et al.
patent: 4384886 (1983-05-01), Stift
patent: 4758268 (1988-07-01), Bishop et al.

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