Method for producing high-grade ferro-nickel directly from nicke

Details Method for producing high-grade ferro-nickel directly from nicke Method for producing high-grade ferro-nickel directly from nicke

1975-04-16

1976-12-07

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 82, 75129, C21C 552

Patent

active

039960455

ABSTRACT:
A method for producing high-grade ferro-nickel containing 0.4 to 5% of sulfur directly from nickel-containing oxide ores which comprises adding at least one member selected from the group consisting of high-sulfur fuels, elemental sulfur, gypsum, pyrites, nickel sulfide ores, and high-sulfur waste material produced during desulfurization of steels and ferro alloys to the nickel-containing oxide ore to provide a sulfur addition of 0.1 - 3 kilogram per one ton of dry ore, treating the resultant mixture in a pre-reducing furnace or calcining furnace, and smelting the thus treated mixture in an electric furnace.

REFERENCES:
patent: 3004846 (1961-10-01), Queneau
patent: 3224871 (1965-12-01), Collin

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