北京科技大学学报2013，Vol.35Issue(3)：288-296,9.
Fe-Ni-O体系中Fe/Ni的还原行为
Reduction behavior of Fe/Ni in the Fe-Ni-O system
摘要
Abstract
The product composition under different conditions and the reduction behavior of Fe and Ni in the Fe-Ni-O system were studied by electric resistance furnace experiments and thermogravimetric analysis. The order of difficult degree for reducing Fe/Ni oxides in five systems is NiO<Fe2O3+Ni<Fe2O3+NiO<NiFe2O4<Fe2O3. The existence of Ni can promote the reduction of iron oxides, while the contribution degree depends on its initial state, and the order tends to be metallic Ni>NiO>Ni released from NiFe2O4. As the temperature increases, the reduction products of NiFe2O4 are in order of Fe3O4, Ni, (Fe, Ni), Fe, and Fe0.64Ni0.36- Based on these experimental results, the reduction processes and the kinetics such as activation energy and rate-controlling step for reducing the five oxides were analyzed and discussed.关键词
不锈钢/粉尘/还原/动力学/活化能Key words
stainless steel/ dust/ reduction/ kinetics/ activation energy分类
矿业与冶金引用本文复制引用
魏文洁,张延玲,魏芬绒,杨小刚,胡晓军..Fe-Ni-O体系中Fe/Ni的还原行为[J].北京科技大学学报,2013,35(3):288-296,9.基金项目
国家自然科学基金资助项目(51074025) （51074025）
中央高校基本科研业务费资助项目(FRF-SD-12-009A) （FRF-SD-12-009A）
