| 摘要 |
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.
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