Enhanced reduction of ilmenite ore by pre-oxidation in the view of pore formation
文献类型：期刊论文
| 作者 | Zhang, Xu1,2; Du, Zhan1; Zhu, Qingshan1,2; Li, Jun1; Xie, Zhaohui1 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 405页码:12 |
| ISSN号 | 0032-5910 |
| 关键词 | Reduction Pre-oxidization Ilmenite Fluidization Porous structure |
| DOI | 10.1016/j.powtec.2022.117539 |
| 英文摘要 | The promotion effect of pre-oxidation on reduction of ilmenite was revealed from the view of pore formation. The result shows that the enhancement of pre-oxidation on reduction of ilmenite ore is attributed to the formation of porous structure during the reduction process. Reduction of ilmenite is inhibited by iron-rutile topology structure formed on the particle surface. By contrast, porous structure ilmenite is regenerated during the ferric-to-ferrous reduction stage of the pre-oxidized ilmenite with dominant reduction rate over diffusion rate of produced ferrous omega & GE; 33.2 mol/m4. The newly formed porous structure ilmenite enlarges particle surface area with facilitated gas-solid contact, thus it is responsible for the enhancement of the reduction of pre-oxidized ilmenite. A novel formation mechanism of porous structure is also proposed based on the competition and coordination between the reduction rate and diffusion rate determined by reduction potential and temperature. |
| WOS关键词 | CARBOTHERMIC REDUCTION ; MICROSTRUCTURAL CHANGES ; HYDROGEN REDUCTION ; CONCENTRATE POWDER ; GASEOUS REDUCTION ; NATURAL ILMENITE ; CHEMICAL PATHWAY ; OXYGEN CARRIER ; REDOX CYCLES ; TI METAL |
| 资助项目 | National Natural Science Foundation of China[21736010] ; National Natural Science Foundation of China[21978300] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000809762300004 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53954]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhu, Qingshan; Li, Jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xu,Du, Zhan,Zhu, Qingshan,et al. Enhanced reduction of ilmenite ore by pre-oxidation in the view of pore formation[J]. POWDER TECHNOLOGY,2022,405:12. |
| APA | Zhang, Xu,Du, Zhan,Zhu, Qingshan,Li, Jun,&Xie, Zhaohui.(2022).Enhanced reduction of ilmenite ore by pre-oxidation in the view of pore formation.POWDER TECHNOLOGY,405,12. |
| MLA | Zhang, Xu,et al."Enhanced reduction of ilmenite ore by pre-oxidation in the view of pore formation".POWDER TECHNOLOGY 405(2022):12. |
入库方式： OAI收割
来源：过程工程研究所
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