| Abstract: | As part of its effort to devise suitable technology for processing low-grade domestic materials and recycling wastes, the U.S. Bureau of Mines has evaluated the feasibility of smelting a chromite concentrate derived from residues generated by the processing of nickel and cobalt from domestic later-ites. The product sought was a high-carbon ferrochromium suitable for stainless- and alloy-steel production. The concentrate was blended with re-ductants and fluxing constituents and was smelted under submerged arc conditions in a laboratory-scale, single-phase ac electric arc furnace. The results revealed that metallurgical-grade coke provides the best quality product. High-carbon ferrochromium, which met ASTM specifications except for phosphorus and sulfur, was obtained. Agglomeration of the charge materials was not required. |
