|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||8th International Symposium on High Temperature Metallurgical Processing
||E-27: Investigation on the Phase Transformation of Vanadium Slag during the Direct Reduction Process
||Wen-Feng Tan, Bing Xie, Pan Gu, Hong-Yi Li, Jiang Diao, Wang Zhou
|On-Site Speaker (Planned)
In order to remove silicon dioxide and improve the grade of vanadium slag, a novel direct reduction pretreatment process is proposed. The phases transformation of vanadium slag is investigated by X-ray diffraction analysis. The results indicate that the reduction temperature make great influence on the phases composition of vanadium slag. The phases consist of spinels, augites, olivine and carbon in vanadium slag at the reduction temperature of 1023 K. While the reduction temperature increased to 1073 K, two new phases of metallic iron and silica appear. With the further increase of reduction temperature to 1173 K, goldmanite generate. As increasing the reduction temperature to 1223 K, vanadium oxide (VO) could form, meanwhile, olivine disappears. The optimum conditions for reduction are that keep temperature at 1223K and the duration for 3 hours, while ensure the ratio of carbon and vanadium slag at 1:5.
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