Recovery of metal values from copper reverberatory slag

Details Recovery of metal values from copper reverberatory slag Recovery of metal values from copper reverberatory slag

1976-06-16

1977-08-23

Thomas, Earl C.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75115, 423 41, C22B 1500

Patent

active

040438040

ABSTRACT:
A process for the recovery of metals from copper reverberatory slag containing iron in the form of silicates comprising roasting said slag in an oxidizing atmosphere at a temperature of at least about 550.degree. C in the presence of sulfur trioxide for a time sufficient to effect decomposition of substantially all of said iron present in the slag to iron oxide and the other metals therein to water-soluble salts and metal oxides, and separating the water-soluble metal salts and metal oxides from the iron oxide and silica residue.

REFERENCES:
patent: 35509 (1862-06-01), Dahne
patent: 692008 (1902-01-01), Frolich et al.
patent: 1043490 (1912-11-01), Wedge
patent: 1582347 (1926-04-01), Read et al.
patent: 1674491 (1928-06-01), Wetherbee

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