东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (1): 44-51.DOI: 10.12068/j.issn.1005-3026.2025.20230245

• 材料与冶金 • 上一篇    下一篇

烧结矿竖冷炉内物料流动的优化

李海峰1,2, 祁腾飞2, 张永杰2, 邹宗树1,2   

  1. 1.东北大学 多金属共生矿生态化冶金教育部重点实验室,辽宁 沈阳 110819
    2.东北大学 冶金学院,辽宁 沈阳 110819
  • 收稿日期:2023-08-27 出版日期:2025-01-15 发布日期:2025-03-25
  • 作者简介:李海峰(1982—),男,河北邯郸人,东北大学副研究员
    邹宗树(1958—),男,山东章丘人,东北大学教授,博士生导师.
  • 基金资助:
    国家重点研发计划项目(2022YFE0208100);中央高校基本科研业务费专项资金资助项目(N2225022)

Optimization of Material Flow in Sinter Vertical Cooling Furnace

Hai-feng LI1,2, Teng-fei QI2, Yong-jie ZHANG2, Zong-shu ZOU1,2   

  1. 1.Key Laboratory of Ecological Metallurgy of Multimetallic Mineral (Ministry of Education),Northeastern University,Shenyang 110819,China
    2.School of Metallurgy,Northeastern University,Shenyang 110819,China. Corresponding author: LI Hai-feng,E-mail: lihf@smm. neu. edu. cn
  • Received:2023-08-27 Online:2025-01-15 Published:2025-03-25

摘要:

为改善梅钢竖冷炉内物料流动,提出了边缘-中心混合布料的优化措施,并使用离散单元法分析该措施对竖冷炉内的物料速度分布以及运动流型的改善效果.结果表明,边缘-中心混合布料能够将颗粒速度分布,从现有中间单一布料方式的边缘区速度较小而中间区和中心区速度较大,改为边缘区和中心区速度较大,而中间区速度较小;同时将物料运动流型从原来的“U”型变为“—”型;并将颗粒下移的最小整体流指数,从原来的0.645增加至0.762,从而提高炉内物料流动的“整体流”程度.但该布料方式也会造成中间区大颗粒偏析严重.可尝试调整边缘和中心下料管的相对高度,以平衡物料流动的改善和偏析的增加.

关键词: 竖冷炉, 烧结矿, 流型, 整体流, 离散单元法

Abstract:

In order to improve the material flow in the vertical cooling furnace of Shanghai Meishan Iron and Steel Co. , Ltd. , the optimization measures of edge‑center combined charging are proposed, and the discrete element method (DEM) is used to analyze the improvement effect of this measure on the material velocity distribution and flow pattern in the vertical cooling furnace. The results show that the edge‑center combined charging can change the velocity distribution law from the low‑velocity in the sidewall area and high‑velocity in the middle area and center area to high‑velocity in the sidewall area and center area and low‑velocity in the middle area. At the same time, the material flow pattern is changed from the original “U” type to “—” type. The minimum mass flow index of particles moving down is increased from 0.645 to 0.762, which improves the “mass flow” degree of material flow in the furnace. However, this charging method will cause serious segregation of large particles in the middle area. It is suggested to try to adjust the relative height of the edge and center charging pipes to balance the improvement of material flow and the increase of segregation.

Key words: vertical cooling furnace, sinter, flow pattern, mass flow, discrete element method (DEM)

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