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移动电磁场对铁水预处理脱硫速度的影响
引用本文:苏志坚,李炎华,赵海泉,邹宗树,赫冀成.移动电磁场对铁水预处理脱硫速度的影响[J].钢铁研究学报,2009,21(11):12-12.
作者姓名:苏志坚  李炎华  赵海泉  邹宗树  赫冀成
作者单位:1. 东北大学材料电磁过程研究教育部重点实验室,辽宁,沈阳,110004
2. 东北大学材料与冶金学院,辽宁,沈阳,110004
基金项目:国家自然科学基金,教育部留学回国人员科研启动基金
摘    要: 为探讨移动电磁场对冶金反应速度的影响作用,本研究对电磁搅拌下的铁水预处理脱硫进行了实验研究。将CaO-10 mass%CaF2脱硫剂加至铁水的自由表面或用载气带入铁水内部,并采用不同的搅拌方式和强度进行了电磁搅拌下的实验,得到了铁水中硫浓度随时间的变化曲线。研究发现电磁搅拌通过改变渣金界面状态及边界层厚度从而提高铁水脱硫速度,并得到了不同搅拌强度和不同搅拌方式的容量传质系数。最后提出一种环保和易操作的电磁搅拌下铁水预处理脱硫工艺。

关 键 词:脱硫  电磁搅拌  铁水预处理
收稿时间:2009-01-08;

Effect of Traveling Electromagnetic Field on Desulphurization Rate of Hot Metal Pretreatment
SU Zhi-jian,LI Yan-hua,ZHAO Hai-quan,ZOU Zong-shu,HE Ji-cheng.Effect of Traveling Electromagnetic Field on Desulphurization Rate of Hot Metal Pretreatment[J].Journal of Iron and Steel Research,2009,21(11):12-12.
Authors:SU Zhi-jian  LI Yan-hua  ZHAO Hai-quan  ZOU Zong-shu  HE Ji-cheng
Abstract:In order to study the effect of traveling electromagnetic field on the rate of metallurgical reaction, the desulphurization process without imposition of electromagnetic stirring or with imposition of electromagnetic stirring which has different stirring intensities and stirring types was investigated experimentally. CaO-CaF_2 desulfurizer was charged on the free surface or in the interior of hot metal with carrier gas in the experiments. The desulphurization experiments were conducted with and without the imposition of electromagnetic stirring. The experiments under different stirring intensities and stirring types were conducted. The changes of the sulfur content of hot metal with respect to time were obtained, and then the volume mass transfer coefficients of sulfur under different stirring intensities and stirring types were determined. The effect of electromagnetic stirring on the desulphurization rate was also discussed. The study showed that the electromagnetic stirring could increase the desulphurization rate of hot metal by changing the flow rate of metal, the interface state of hot metal and slag and the boundary layer thickness. A new environmental friendly desulphurization process by using electromagnetic stirring was proposed finally.
Keywords:desulphurization  electromagnetic stirring  hot metal pretreatment
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