工程科学学报2016，Vol.38Issue(9)：1227-1232,6.DOI:10.13374/j.issn2095-9389.2016.09.005
FeTiO3--Fe2 O3固溶体等温碳热还原
Isothermal carbothermal reduction of synthetic FeTiO3--Fe2 O3 solid solutions
摘要
Abstract
FeTiO3 and FeTiO3-Fe2 O3 solid solution systems were synthesized based on the ceramic method. The synthetic FeTiO3-Fe2 O3 solid solutions were subjected to isothermal carbothermal reduction experiments at 1150℃ combining with thermodynamic anal-ysis. The synthetic products were systematically studied by X-ray diffraction and scanning electron microscopy-energy dispersive spec-troscopy. The results show that the synthetic products are all ideal with homogeneous components. From the view of reduction, the smaller the value of x, the molar fraction of FeTiO3, the earlier the carbothermal reduction of xFeTiO3-(1-x)Fe2O3 solid solutions start, and the higher the maximum reduction rate is. As an intermediate phase, pseudobrookite ( FeTi2 O5-Fe2 TiO5 ( Fe3 Ti3 O10 ) ) does not disappear during the whole initial reduction stage until the formation of metal iron ( Fe) and ulvöspinel ( Fe2 TiO4 ) .关键词
碳热还原/固溶体/热力学/物相组成Key words
carbothermal reduction/solid solutions/thermodynamics/phase composition分类
矿业与冶金引用本文复制引用
邢相栋,张建良,刘依然,刘征建,刘兴乐,李乃尧..FeTiO3--Fe2 O3固溶体等温碳热还原[J].工程科学学报,2016,38(9):1227-1232,6.基金项目
国家重点基础研究发展计划资助项目(2012CB720400) （2012CB720400）
高等学校学科创新引智计划资助项目(B13004) （B13004）
陕西省教育厅专项科研计划资助项目(16JK1442) （16JK1442）
