Process for the extraction of non-ferrous metals from slags and

Details Process for the extraction of non-ferrous metals from slags and Process for the extraction of non-ferrous metals from slags and

1979-01-09

1980-07-29

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 24, C21C 552, C21B 304

Patent

active

042148979

ABSTRACT:
Non-ferrous metals are extracted from molten slags 9 by treating the latter in an electric furnace with submerged electrodes 2 under a layer of a solid reducing agent 8. During the extraction, a non-oxidizing gas is injected into the molten material at a flow rate of between 0.5 and 10 Nm3/h/ton of material treated (FIG. 1).

REFERENCES:
patent: 1822396 (1931-09-01), Fowler
patent: 1822588 (1931-09-01), Fowler
patent: 4110107 (1978-08-01), Paulson
"Process for Reducing Molten Furnace Slags by Carbon Injection", (U.S. Dept. of Interior, 6/1977).
Paulson & Hunter, "Recovering Iron from Copper Smelting Furnace Slags by Carbon Injection", (U.S. Dept. of Interior, 1977).

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