Morphological Changes and Reduction Mechanism for the Weak Reduction of the Preoxidized Panzhihua Ilmenite
文献类型：期刊论文
| 作者 | Zhang, Jianbo1,2; Zhang, Gengyu1,2; Zhu, Qingshan1; Lei, Chao1,2; Xie, Zhaohui1; Li, Hongzhong1 |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 45期号:3页码:914-922 |
| 关键词 | OXIDATION CARBON HYDROGEN KINETICS |
| ISSN号 | 1073-5615 |
| 其他题名 | Metall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci. |
| 中文摘要 | Morphological changes and phase transition behaviors were investigated for the weak reduction (reduction of ferric iron-to-ferrous state) of preoxidized Panzhihua ilmenite by hydrogen at 873 K to 1073 K (600 A degrees C to 800 A degrees C). Ilmenite was preoxidized for 4 hours at 1023 K and 1173 K (750 A degrees C and 900 A degrees C), respectively, before the reduction. The results revealed that there were two competing reduction routes. At high reduction temperatures, e.g., 1023 K and 1073 K (750 A degrees C and 800 A degrees C), ferric irons from both hematite and pseudobrookite would combine with rutile grains as formed in the preoxidation to form homogeneous ilmenite phase with pores immingled. However, at lower reduction temperatures, e.g., 873 K (600 A degrees C), hematite and pseudobrookite are reduced mainly through direct reduction without the participation of rutile. As a result, the as-reduced ilmenites show great differences in their phase components and microstructure, especially for the Ti species. For ilmenites preoxidized at 1023 K (750 A degrees C), most of the Ti ions present in the needlelike rutile network, but for ilmenites preoxidized at 1173 K (900 A degrees C), Ti distributed in both irregular rutile grains and ilmenite matrix. (C) The Minerals, Metals & Materials Society and ASM International 2014 |
| 英文摘要 | Morphological changes and phase transition behaviors were investigated for the weak reduction (reduction of ferric iron-to-ferrous state) of preoxidized Panzhihua ilmenite by hydrogen at 873 K to 1073 K (600 A degrees C to 800 A degrees C). Ilmenite was preoxidized for 4 hours at 1023 K and 1173 K (750 A degrees C and 900 A degrees C), respectively, before the reduction. The results revealed that there were two competing reduction routes. At high reduction temperatures, e.g., 1023 K and 1073 K (750 A degrees C and 800 A degrees C), ferric irons from both hematite and pseudobrookite would combine with rutile grains as formed in the preoxidation to form homogeneous ilmenite phase with pores immingled. However, at lower reduction temperatures, e.g., 873 K (600 A degrees C), hematite and pseudobrookite are reduced mainly through direct reduction without the participation of rutile. As a result, the as-reduced ilmenites show great differences in their phase components and microstructure, especially for the Ti species. For ilmenites preoxidized at 1023 K (750 A degrees C), most of the Ti ions present in the needlelike rutile network, but for ilmenites preoxidized at 1173 K (900 A degrees C), Ti distributed in both irregular rutile grains and ilmenite matrix. (C) The Minerals, Metals & Materials Society and ASM International 2014 |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | OXIDATION ; CARBON ; HYDROGEN ; KINETICS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000336980900014 |
| 公开日期 | 2014-08-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11029]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 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, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jianbo,Zhang, Gengyu,Zhu, Qingshan,et al. Morphological Changes and Reduction Mechanism for the Weak Reduction of the Preoxidized Panzhihua Ilmenite[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2014,45(3):914-922. |
| APA | Zhang, Jianbo,Zhang, Gengyu,Zhu, Qingshan,Lei, Chao,Xie, Zhaohui,&Li, Hongzhong.(2014).Morphological Changes and Reduction Mechanism for the Weak Reduction of the Preoxidized Panzhihua Ilmenite.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,45(3),914-922. |
| MLA | Zhang, Jianbo,et al."Morphological Changes and Reduction Mechanism for the Weak Reduction of the Preoxidized Panzhihua Ilmenite".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 45.3(2014):914-922. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。