Mechanically activated carbothermic reduction of ilmenite |
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Authors: | Y. Chen T. Hwang M. Marsh J. S. Williams |
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Affiliation: | (1) the Department of Electronic Materials and Engineering, Research School of Physical Science and Engineering, The Australian National University, 0200 Canberra, ACT, Australia |
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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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