COREX竖炉螺旋结构对物料运动影响的DEM模拟
基于离散单元方法建立了三维COREX-3000竖炉模型,通过模拟研究比较了宝钢螺旋与设计的均匀下料螺旋的下料均匀性指数、物料流型和物料下降速度在炉内的分布.结果表明,宝钢螺旋的下料均匀性指数在第1节到第5节螺旋上都较小,最大值在第4节螺旋上为0.36,而设计螺旋的下料均匀性指数在整个下料段都接近1,在理论上达到了均匀下料的目的;从宏观上看,设计螺旋在整个竖炉高度上的物料流型比宝钢螺旋更均匀;在围管下方设计螺旋沿竖炉径向的下料速度比宝钢螺旋均匀,在围管上方螺旋结构对物料下降速度的影响很小,下料模式接近活塞流....
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| Published in | 东北大学学报（自然科学版） Vol. 39; no. 1; pp. 55 - 60 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
东北大学 冶金学院,辽宁 沈阳,110819
2018
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1005-3026 |
| DOI | 10.12068/j.issn.1005-3026.2018.01.012 |
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| Abstract | 基于离散单元方法建立了三维COREX-3000竖炉模型,通过模拟研究比较了宝钢螺旋与设计的均匀下料螺旋的下料均匀性指数、物料流型和物料下降速度在炉内的分布.结果表明,宝钢螺旋的下料均匀性指数在第1节到第5节螺旋上都较小,最大值在第4节螺旋上为0.36,而设计螺旋的下料均匀性指数在整个下料段都接近1,在理论上达到了均匀下料的目的;从宏观上看,设计螺旋在整个竖炉高度上的物料流型比宝钢螺旋更均匀;在围管下方设计螺旋沿竖炉径向的下料速度比宝钢螺旋均匀,在围管上方螺旋结构对物料下降速度的影响很小,下料模式接近活塞流. |
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| AbstractList | TF557; 基于离散单元方法建立了三维COREX-3000竖炉模型,通过模拟研究比较了宝钢螺旋与设计的均匀下料螺旋的下料均匀性指数、物料流型和物料下降速度在炉内的分布.结果表明,宝钢螺旋的下料均匀性指数在第1节到第5节螺旋上都较小,最大值在第4节螺旋上为0.36,而设计螺旋的下料均匀性指数在整个下料段都接近1,在理论上达到了均匀下料的目的;从宏观上看,设计螺旋在整个竖炉高度上的物料流型比宝钢螺旋更均匀;在围管下方设计螺旋沿竖炉径向的下料速度比宝钢螺旋均匀,在围管上方螺旋结构对物料下降速度的影响很小,下料模式接近活塞流. 基于离散单元方法建立了三维COREX-3000竖炉模型,通过模拟研究比较了宝钢螺旋与设计的均匀下料螺旋的下料均匀性指数、物料流型和物料下降速度在炉内的分布.结果表明,宝钢螺旋的下料均匀性指数在第1节到第5节螺旋上都较小,最大值在第4节螺旋上为0.36,而设计螺旋的下料均匀性指数在整个下料段都接近1,在理论上达到了均匀下料的目的;从宏观上看,设计螺旋在整个竖炉高度上的物料流型比宝钢螺旋更均匀;在围管下方设计螺旋沿竖炉径向的下料速度比宝钢螺旋均匀,在围管上方螺旋结构对物料下降速度的影响很小,下料模式接近活塞流. |
| Abstract_FL | A COREX-3000 shaft furnace model was established based on discrete element method to compare the drawdown uniformity coefficient, drawdown pattern and distribution of descending velocity between Baosteel screw and the newly designed screw by means of simulating. The results show that the drawdown uniformity coefficients of Baosteel screw from pitch 1 to pitch 5 are small and the peak 0. 36 appears at pitch 4. However, the drawdown uniformity coefficients of the newly designed screw are close to 1 in all the burden drawdown area. From the macroscopic aspect, the drawdown patterns of the new screw along the whole height of shaft furnace are more uniform than that of Baosteel screw. Below the gas slots, the distribution of descending velocity along the radius of the shaft furnace with the new screw are more uniform than that with Baosteel screw. Above the gas slots, the effect of screw structure on burden descending velocity is small, and the drawdown patterns is more like plug flow. |
| Author | 张丽娟;邱子龙;罗志国;邹宗树 |
| AuthorAffiliation | 东北大学冶金学院,辽宁沈阳110819 |
| AuthorAffiliation_xml | – name: 东北大学 冶金学院,辽宁 沈阳,110819 |
| Author_FL | QIU Zi-long ZOU Zong-shu LUO Zhi-guo ZHANG Li-juan |
| Author_FL_xml | – sequence: 1 fullname: ZHANG Li-juan – sequence: 2 fullname: QIU Zi-long – sequence: 3 fullname: LUO Zhi-guo – sequence: 4 fullname: ZOU Zong-shu |
| Author_xml | – sequence: 1 fullname: 张丽娟;邱子龙;罗志国;邹宗树 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DocumentTitleAlternate | Effect of Screw Structure on Burdens Moving Behavior in COREX Shaft Furnace with DEM Simulation |
| DocumentTitle_FL | Effect of Screw Structure on Burdens Moving Behavior in COREX Shaft Furnace with DEM Simulation |
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| Keywords | flow patterns COREX预还原竖炉 screw design 螺旋设计 流型 COREX shaft furnace discrete element methods 下料速度 burden descending velocity 离散单元法 |
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| Notes | COREX shaft furnace; discrete element methods; flow patterns; screw design; burden descending velocity 21-1344/T ZHANG Li-juan,QIU Zi-long,LUO Zhi-guo,ZOU Zong-shu（School of Metallurgy,Northeastern University,Shenyang 110819,China. ） A COREX-3000 shaft furnace model was established based on discrete element method to compare the drawdown uniformity coefficient,drawdown pattern and distribution of descending velocity between Baosteel screw and the newly designed screw by means of simulating. The results show that the drawdown uniformity coefficients of Baosteel screw from pitch 1 to pitch 5 are small and the peak 0. 36 appears at pitch 4. However,the drawdown uniformity coefficients of the newly designed screw are close to 1 in all the burden drawdown area. From the macroscopic aspect,the drawdown patterns of the new screw along the whole height of shaft furnace are more uniform than that of Baosteel screw. Below the gas slots,the distribution of descending velocity along the radius of the shaft furnace with the |
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| PublicationTitle | 东北大学学报（自然科学版） |
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| PublicationYear | 2018 |
| Publisher | 东北大学 冶金学院,辽宁 沈阳,110819 |
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| SubjectTerms | COREX预还原竖炉 下料速度 流型 离散单元法 螺旋设计 |
| Title | COREX竖炉螺旋结构对物料运动影响的DEM模拟 |
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