ISSN：1003-8620

CN：42-1243/TF

主管：中信泰富特钢集团股份有限公司

主办：大冶特殊钢有限公司

特殊钢 ›› 2021, Vol. 42 ›› Issue (6): 1-5.

• 试验研究 •    下一篇

超音速射流冲击260 t转炉熔池界面行为研究

庞洪轩1，4，刘广强2，徐东1，3，郑冰1，2，邹志鹏1   

  1. 1 河北工程大学河北省高品质冷镦钢技术创新中心，邯郸056038;
    2 辽宁科技大学土木工程学院，鞍山114051;
    3 河北普阳钢铁集团河北省高韧性风塔钢工程研究中心，邯郸056305;
    4 河北普阳钢铁集团河北省高塑韧性耐磨钢板技术创新中心，邯郸056305
  • 收稿日期:2021-04-29 出版日期:2021-12-23 发布日期:2022-01-03
  • 通讯作者: 徐 东
  • 作者简介:庞洪轩(1987-)，男，硕士(2013年东北大学)，工程师,2011 年东北大学(本科)毕业，炼钢、轧钢工艺技术研究。
  • 基金资助:
    国家自然科学基金联合基金项目(NSFC ) (U20A20272 ),河北省 钢铁联合基金 (E2020402016),辽宁科技大学材料成型与组织性 能控制重点实验室(USTLKFSY201708)资助

Study of Interface Behavior of 260 t Converter Molten  Pool Impacted by Supersonic Jet

Pang Hongxuan1,4, Liu Guangqiang2, Xu Dong1,3, Zheng Bing1,2 and Zou Zhipeng1   

  1. 1 Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province, Hehei University of Engineering, Handan 056038;
    2 School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051;
    3 Engineering Research Center for High Toughness Wind Tower Steel of Hebei Province, Hebei，Puyang Iron and Steel Corp Ltd, Handan 056305;
    4 Technology Innovation Center for Wear Resistant Steel Plate of High plasticity and  High Toughness of Hebei Province, Hebei Puyang Iron and Steel Corp Ltd, Handan 056305)
  • Received:2021-04-29 Published:2021-12-23 Online:2022-01-03

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摘要： 建立了260t转炉吹炼过程中的可压缩、非等温三维VOF 模型。研究了多孔超音速射流与转炉熔池作用过程特征，阐明了射流与熔融钢水界面接触的轮廓变化。揭示了钢液喷溅机制，定量分析了冲击坑形态大小。结果表明，吹炼过程具有瞬时性，随着吹炼进行，气液界面逐渐失稳并发生喷溅，喷溅会以大块金属带和液滴两种形式共存。在2.2 m枪位53000 m3/h的工况下,进行吹炼时形成的底部死区面积约为熔池底部面积的12%~15%，冲击坑直径占比熔池直径的55%左右，冲击坑深度占比熔池深度的30%左右。工业生产实践表明，过程枪位2.2 m，吹气量53000 m3/h，吹氧15.2 min，氧耗47.7 m3/t，脱磷率83.1%，钢铁料消耗降至1115 kg/t。

Abstract: A compressible and non isothermal three dimensional VOF model for 260 t converter is established. The characteristics of interaction process between the multi hole supersonic jet and the converter bath are studied and the profile change of interface between the jet and the molten steel is clarified. The mechanism of metal droplet splashing is revealed and the size of the cavity is analyzed quantitatively. The results show that the blowing process has instantaneity, the gas liquid interface becomes unstable and causes splashing with the process of blowing and splashing can coexist in the form of large metal strip and droplet. When the lance distance is 22 m and the flow rate is 53000 m3/h, the dead zone area is about 12%~15% of the bottom area, [JP]the cavity diameter accounts for about 55% of the pool diameter, and the cavity depth accounts for about 30% of the pool depth at formed during blowing. Through the analysis of industrial production practice index, it shows that the by process lance distance 2.2 m and flow rate 53000 m3/h, oxygen blowing for 15.2 min, oxygen comsumption 47.7 m3/t, the dephosphorizing rate is 83.1% and the charging materials comsumption decreases to 1115 kg/t.

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