About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
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Presentation Title |
Microwave and Conventional Carbothermic Reduction of Chromite Ore: A Comparison |
Author(s) |
Huimin Tang, Zhiwei Peng, Tianle Yin, Lei Ye, Qiang Zhong, Mingjun Rao |
On-Site Speaker (Planned) |
Huimin Tang |
Abstract Scope |
The reduction of chromite ore is an important step in the production of ferrochromium alloy and stainless steel. The comparison between conventional and microwave reduction of chromite ore was investigated in this study with a focus on the effect of reduction time. Compared to conventional reduction, microwave reduction of chromite ore was more efficient by breaking the stable chromium-containing spinel structure, resulting in higher metallization degrees of chromium and iron and the formation of large-sized Fe-Cr particles. By fixing reduction temperature of 1100 ºC and C/O molar ratio of 1.2, the metallization degrees of chromium and iron of the briquettes constituted by chromite ore and coke powder after microwave reduction increased from 91.57% and 83.03% to 93.53% and 85.78%, respectively, with increasing time from 0 min to 120 min, which were higher than those obtained by conventional reduction for 4 h (7.00% for chromium and 67.26% for iron). |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Pyrometallurgy, Process Technology |