| Hydrogen-based direct reduction of iron oxide at 700 degrees C: Heterogeneity at pellet and microstructure scales | |
| Ma, Yan1; Souza Filho, Isnaldi R.1; Zhang, Xue1,2; Nandy, Supriya1; Barriobero-Vila, Pere3; Requena, Guillermo3,4; Vogel, Dirk1; Rohwerder, Michael1; Ponge, Dirk1; Springer, Hauke1,5; Raabe, Dierk1 | |
| Corresponding Author | Ma, Yan(y.ma@mpie.de) ; Raabe, Dierk(d.raabe@mpie.de) |
| 2022-10-01 | |
| Source Publication | INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
 |
| ISSN | 1674-4799 |
| Volume | 29Issue:10Pages:1901-1907 |
| Abstract | Steel production causes a third of all industrial CO2 emissions due to the use of carbon-based substances as reductants for iron ores, making it a key driver of global warming. Therefore, research efforts aim to replace these reductants with sustainably produced hydrogen. Hydrogen-based direct reduction (HyDR) is an attractive processing technology, given that direct reduction (DR) furnaces are routinely operated in the steel industry but with CH4 or CO as reductants. Hydrogen diffuses considerably faster through shaft-furnace pellet agglomerates than carbon-based reductants. However, the net reduction kinetics in HyDR remains extremely sluggish for high-quantity steel production, and the hydrogen consumption exceeds the stoichiometrically required amount substantially. Thus, the present study focused on the improved understanding of the influence of spatial gradients, morphology, and internal microstructures of ore pellets on reduction efficiency and metallization during HyDR. For this purpose, commercial DR pellets were investigated using synchrotron high-energy X-ray diffraction and electron microscopy in conjunction with electron backscatter diffraction and chemical probing. Revealing the interplay of different phases with internal interfaces, free surfaces, and associated nucleation and growth mechanisms provides a basis for developing tailored ore pellets that are highly suited for a fast and efficient HyDR. |
| Keyword | hydrogen-based direct reduction iron oxide microstructure spatial gradient metallization |
| Funding Organization | Walter Benjamin Programme of the Deutsche Forschungsgemeinschaft ; Capes-Humboldt ; Heisenberg Programme of the Deutsche Forschungsgemeinschaft |
| DOI | 10.1007/s12613-022-2440-5 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Walter Benjamin Programme of the Deutsche Forschungsgemeinschaft[468209039] ; Capes-Humboldt[88881.512949/2020-01] ; Heisenberg Programme of the Deutsche Forschungsgemeinschaft[SP 1666 2/1] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing |
| WOS ID | WOS:000842414200010 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174474 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma, Yan; Raabe, Dierk |
| Affiliation | 1.Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany 2.Chinese Acad Sci, Corros Ctr, Inst Met Res, Shenyang 110016, Peoples R China 3.German Aerosp Ctr, Inst Mat Res, D-51147 Cologne, Germany 4.Rhein Westfal TH Aachen, Lehr & Forschungsgebiet Metall Strukturen & Werks, D-52062 Aachen, Germany 5.Rhein Westfal TH Aachen, Inst Bildsame Formgebung, Intzestr 10, D-52072 Aachen, Germany |
| Recommended Citation GB/T 7714 | Ma, Yan,Souza Filho, Isnaldi R.,Zhang, Xue,et al. Hydrogen-based direct reduction of iron oxide at 700 degrees C: Heterogeneity at pellet and microstructure scales[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2022,29(10):1901-1907. |
| APA | Ma, Yan.,Souza Filho, Isnaldi R..,Zhang, Xue.,Nandy, Supriya.,Barriobero-Vila, Pere.,...&Raabe, Dierk.(2022).Hydrogen-based direct reduction of iron oxide at 700 degrees C: Heterogeneity at pellet and microstructure scales.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,29(10),1901-1907. |
| MLA | Ma, Yan,et al."Hydrogen-based direct reduction of iron oxide at 700 degrees C: Heterogeneity at pellet and microstructure scales".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 29.10(2022):1901-1907. |
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