Method for separating non-ferrous metals from ferruginous second

Details Method for separating non-ferrous metals from ferruginous second Method for separating non-ferrous metals from ferruginous second

1983-05-04

1985-01-01

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 25, C22B 120

Patent

active

044914709

ABSTRACT:
A method for separating non-ferrous metals from ferruginous secondary substances such as residues and slurries from blast furnaces, steel mills, rolling mills, and the like. In accordance with the invention, a layer of the secondary substances is combined in agglomerated form with at least one layer of a sinterable mixture. The non-ferrous metals are volatilized off and recovered in the form of an oxide dust. The recovered dust is separated into at least two fractions having different non-ferrous metal contents and then the dust fractions are sintered with the sinterable mixture.

REFERENCES:
patent: 2128379 (1938-08-01), Spencer, Jr.
patent: 3313617 (1967-04-01), Ban et al.
patent: 3318685 (1967-05-01), Handwerk
patent: 3386816 (1968-06-01), English
patent: 3482964 (1969-12-01), Ishimitsu et al.
patent: 3754890 (1973-08-01), Fitch
patent: 4373946 (1983-02-01), Kilian

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