Effect of Temperature on Carbothermic Reduction of Ilmenite
Author(s): LI Wen-bing, YUAN Zhang-fu, Xu Cong, PAN Yi-fang, WANG Xiao-qiang
Pages: 1-5
Year: 2005 Issue: 4
Journal: JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL
Keyword: ilmenite; carbothermic reduction; impurity;
Abstract: The reduction of ilmenite (FeTiO3) has been studied extensively. Temperature for the carbothermic reduction of ilmenite ranges from 900 ℃ to 1 400 ℃, and the reduction degree of Panzhihua ilmenite increases with increasing temperature. X-ray diffraction analysis and SEM analysis were used to identify the phase before and after reduction, and to identify the morphology of reduced samples respectively. It is found that the reaction initiates at about 860 ℃. The reaction rate varies with temperature simultaneously. Impurities in Panzhihua ilmenite decrease the reduction degree. Magnesium and calcium oxide-rich zone is formed preventing complete reduction of Fe2+. In general, the reaction products are iron, Ti3O5 and carbon.
Pages: 1-5
Year: 2005 Issue: 4
Journal: JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL
Keyword: ilmenite; carbothermic reduction; impurity;
Abstract: The reduction of ilmenite (FeTiO3) has been studied extensively. Temperature for the carbothermic reduction of ilmenite ranges from 900 ℃ to 1 400 ℃, and the reduction degree of Panzhihua ilmenite increases with increasing temperature. X-ray diffraction analysis and SEM analysis were used to identify the phase before and after reduction, and to identify the morphology of reduced samples respectively. It is found that the reaction initiates at about 860 ℃. The reaction rate varies with temperature simultaneously. Impurities in Panzhihua ilmenite decrease the reduction degree. Magnesium and calcium oxide-rich zone is formed preventing complete reduction of Fe2+. In general, the reaction products are iron, Ti3O5 and carbon.
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