Prevention of agglomeration/defluidization in fluidized bed reduction of Fe2O3 by CO: The role of magnesium and calcium oxide
文献类型：期刊论文
| 作者 | Zhong, Yiwei1,2; Wang, Zhi1; Guo, Zhancheng3; Tang, Qing1 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2013-06-01 |
| 卷号 | 241期号:0页码:142-148 |
| 关键词 | Fluidized-bed reduction Fe2O3 Prevention Defluidization Magnesium/calcium oxide |
| 英文摘要 | Influence of magnesium and calcium oxide on control of agglomeration and defluidization during Fe2O3 reduction was investigated in a visual fluidized bed reactor. Added MgO and CaO extended the defluidization time and thus inhibited agglomeration significantly. According to the controlled defluidization tests, the particle cohesiveness and agglomeration tendency of bed materials were reduced by adding MgO and CaO. And the inhibition of MgO was more effective. However, the inhibition effect was reduced with increasing the operating temperature. The coating layers of bed particles were examined by the scanning electron microscope/energy-dispersive spectroscopy (SEM/EDS), coupled with X-ray diffraction (XRD). Results showed that a coating layer on the surface was composed of magnesio-wustite (MgO center dot FeO) and calcio-wustite (CaO center dot FeO) generated by the reactions between Mg/Ca oxides and Fe2O3/FeO. During reduction process this coating layer was difficult to reduce and thus suppressed the connection of precipitated iron. Consequently, the bed particles became less sticky and avoided the surfaces of bed particles to adhere. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | IRON-OXIDE ; PARTICLE AGGLOMERATION/DEFLUIDIZATION ; GAS FLUIDIZATION ; DEFLUIDIZATION ; TEMPERATURE ; STICKING ; AGGLOMERATION ; BEHAVIOR ; INCINERATION ; COMBUSTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000319370500017 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13653]  |
| 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, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Univ Sci & Technol Beijing, Key Lab Ecol & Recycle Met, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Yiwei,Wang, Zhi,Guo, Zhancheng,et al. Prevention of agglomeration/defluidization in fluidized bed reduction of Fe2O3 by CO: The role of magnesium and calcium oxide[J]. POWDER TECHNOLOGY,2013,241(0):142-148. |
| APA | Zhong, Yiwei,Wang, Zhi,Guo, Zhancheng,&Tang, Qing.(2013).Prevention of agglomeration/defluidization in fluidized bed reduction of Fe2O3 by CO: The role of magnesium and calcium oxide.POWDER TECHNOLOGY,241(0),142-148. |
| MLA | Zhong, Yiwei,et al."Prevention of agglomeration/defluidization in fluidized bed reduction of Fe2O3 by CO: The role of magnesium and calcium oxide".POWDER TECHNOLOGY 241.0(2013):142-148. |
入库方式： OAI收割
来源：过程工程研究所
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