Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace process
Pulverized coal (PC) blending with iron-bearing dust (IBD) injection technology in blast furnace (BF) iron-making process was proposed to valorize the IBD. Three aspects containing the co-flow property of PC and IBD, thermal reactivity and corresponding kinetics during the PC combustion process, as...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X22008358 |
| _version_ | 1797956264260534272 |
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| author | Qiangjian Gao Xuhang Xiao Zhiyuan Suo Fang Long Fengman Shen |
| author_facet | Qiangjian Gao Xuhang Xiao Zhiyuan Suo Fang Long Fengman Shen |
| author_sort | Qiangjian Gao |
| collection | DOAJ |
| description | Pulverized coal (PC) blending with iron-bearing dust (IBD) injection technology in blast furnace (BF) iron-making process was proposed to valorize the IBD. Three aspects containing the co-flow property of PC and IBD, thermal reactivity and corresponding kinetics during the PC combustion process, as well as thermal variation and unburned PC distribution in BF were the main focuses of the present work. It has found that the Carr-flowability indexes of PC and IBD appear little difference. Their blends can be smoothly transported when adding portion of the IBD is less than 6%. In addition, comprehensive combustibility index (S), ignition index (Ci), and burnout index (Db) of the PC are improved when the mass fraction of the IBD enhances from 0% to 3%, and 6%, which proves that blending with the IBD can accelerate the PC combustion process. Moreover, the combustion activation energy (E) decreases after adding the IBD, which supports the improved thermal reactivity. Also, the accumulation of unburned PC in BF presents a decline tendency, which may promote the permeability of BF and help enhancing the pulverized coal injection dosage. |
| first_indexed | 2024-04-10T23:46:19Z |
| format | Article |
| id | doaj.art-c9f212ba18b944e3839cd7343d6486e8 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-10T23:46:19Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-c9f212ba18b944e3839cd7343d6486e82023-01-11T04:29:05ZengElsevierCase Studies in Thermal Engineering2214-157X2023-01-0141102598Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace processQiangjian Gao0Xuhang Xiao1Zhiyuan Suo2Fang Long3Fengman Shen4Corresponding author.; Key Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang, 110819, PR ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang, 110819, PR ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang, 110819, PR ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang, 110819, PR ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang, 110819, PR ChinaPulverized coal (PC) blending with iron-bearing dust (IBD) injection technology in blast furnace (BF) iron-making process was proposed to valorize the IBD. Three aspects containing the co-flow property of PC and IBD, thermal reactivity and corresponding kinetics during the PC combustion process, as well as thermal variation and unburned PC distribution in BF were the main focuses of the present work. It has found that the Carr-flowability indexes of PC and IBD appear little difference. Their blends can be smoothly transported when adding portion of the IBD is less than 6%. In addition, comprehensive combustibility index (S), ignition index (Ci), and burnout index (Db) of the PC are improved when the mass fraction of the IBD enhances from 0% to 3%, and 6%, which proves that blending with the IBD can accelerate the PC combustion process. Moreover, the combustion activation energy (E) decreases after adding the IBD, which supports the improved thermal reactivity. Also, the accumulation of unburned PC in BF presents a decline tendency, which may promote the permeability of BF and help enhancing the pulverized coal injection dosage.http://www.sciencedirect.com/science/article/pii/S2214157X22008358Pulverized coalIron-bearing dustThermal reactivityFlowabilityIron-making |
| spellingShingle | Qiangjian Gao Xuhang Xiao Zhiyuan Suo Fang Long Fengman Shen Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace process Case Studies in Thermal Engineering Pulverized coal Iron-bearing dust Thermal reactivity Flowability Iron-making |
| title | Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace process |
| title_full | Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace process |
| title_fullStr | Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace process |
| title_full_unstemmed | Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace process |
| title_short | Thermal reactivity and flowability of pulverized coal blending with iron-bearing dust injection in blast furnace process |
| title_sort | thermal reactivity and flowability of pulverized coal blending with iron bearing dust injection in blast furnace process |
| topic | Pulverized coal Iron-bearing dust Thermal reactivity Flowability Iron-making |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X22008358 |
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