Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1996-12-27
1999-03-16
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 1021, 75 1022, 75 1027, 75 1033, 75 1041, 75 1042, 75 1061, C21B 1110, C22B 400
Patent
active
058823743
ABSTRACT:
A submerged arc furnace having a partially insulated electrode produces molten metal such as foundry iron from scrap iron and steel sources where little or no slag is produced. The metal source, scrap iron or steel is fed into the submerged arc furnace with a source of silica and a carbonaceous reducing agent. The scrap iron and steel is melted while simultaneously smelting the silica in the presence of the carbonaceous reducing agent. The insulation surrounding the electrode can be a silica containing material, such as fiberglass, which is reduced to provide silicon to the molten metal. The amount of the silica source and carbonaceous reducing agent are added in an amount to selectively control the silicon and carbon content of the resulting foundry iron.
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Alabama Power Company
Andrews Melvyn
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