Morphological Changes of Panzhihua Ilmenite During Oxidation Treatment
文献类型：期刊论文
| 作者 | Zhang, Jianbo1,2; Zhu, Qingshan1; Xie, Zhaohui1; Lei, Chao1; Li, Hongzhong1 |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
 |
| 出版日期 | 2013-08-01 |
| 卷号 | 44期号:4页码:897-905 |
| 英文摘要 | Morphological changes with the phase transitions were investigated in detail for the oxidation roasting of Panzhihua ilmenite in air from 873 K to 1173 K (600 A degrees C to 900 A degrees C). It was found that a thin hematite layer of 1 to 2 mu m formed rapidly at the initial stage of the oxidation process, independent of the oxidation temperature, on the surface of ilmenite particles, and the thickness of the hematite layer kept nearly constant with increasing time of oxidation. The morphology inside an ilmenite particle, however, changed with the oxidation temperature. Needlelike rutile network enwrapped by hematite grains was observed after oxidation below 1073 K (800 A degrees C), and the structure can be well preserved during the oxidation process, although grain growth of rutile and hematite did occur with the extension of the oxidation time. The morphological changes at 1073 K (800 A degrees C) and higher showed two distinct stages, where in the first stage ilmenite was oxidized to form rutile and hematite with morphology similar to that of oxidation below 1073 K (800 A degrees C). The as-formed rutile and hematite were not stable and recombined to form pseudobrookite in the second stage, which caused significant morphology change; i.e., the needlelike rutile network gradually "dissolved" to form the final morphology of irregular rutile grains dispersed in the pseudobrookite matrix with some isolated hematite grains. Moreover, the oxidation temperature also has a great effect on the rate of morphological changes, i.e., the increased evolution rate with increasing the oxidation temperature. |
| 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] | REDUCTION ; KINETICS ; PREOXIDATION ; HYDROGEN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000321669900015 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13596]  |
| 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,Zhu, Qingshan,Xie, Zhaohui,et al. Morphological Changes of Panzhihua Ilmenite During Oxidation Treatment[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2013,44(4):897-905. |
| APA | Zhang, Jianbo,Zhu, Qingshan,Xie, Zhaohui,Lei, Chao,&Li, Hongzhong.(2013).Morphological Changes of Panzhihua Ilmenite During Oxidation Treatment.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,44(4),897-905. |
| MLA | Zhang, Jianbo,et al."Morphological Changes of Panzhihua Ilmenite During Oxidation Treatment".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 44.4(2013):897-905. |
入库方式： OAI收割
来源：过程工程研究所
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