Abstract
A systematic study of the effect of milling conditions on the low-temperature carbothermic reduction of the mineral ilmenite has been carried out. It was found that after ball milling of an ilmenite-carbon mixture at room temperature, the ilmenite was reduced to rutile and metallic iron during subsequent low-temperature annealing (760 °C for 30 minutes). A longer milling time results in a lower reduction temperature and a higher reduction rate. Higher milling intensity also leads to a lower reduction temperature. This enhanced reduction reaction induced by ball milling mainly results from the intimate mixing and large contact area between milled ilmenite and carbon particles.
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Chen, Y., Hwang, T., Marsh, M. et al. Mechanically activated carbothermic reduction of ilmenite. Metall Mater Trans A 28, 1115–1121 (1997). https://doi.org/10.1007/s11661-997-0277-1
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DOI: https://doi.org/10.1007/s11661-997-0277-1