炉渣对含钒钛铁水/半钢预脱硫的影响

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英文篇名：Effect of Slags on Desulfurization of Molten Iron/Semi-steel Containing Vanadium and Titanium 作者：杨必文 ; 宋波 ; 郭凯 ; 陈亮 英文作者：Yang Biwen;Song Bo;Guo Kai;Chen Liang;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing;Pangang Group Research Institute Co.,Ltd.; 关键词：含钒钛铁水 ; 半钢 ; 脱硫 ; 炉渣 英文关键词：molten iron containing vanadium and titanium;;semi-steel;;desulphurization;;slag 中文刊名：钢铁钒钛 英文刊名：Iron Steel Vanadium Titanium 机构：北京科技大学冶金与生态工程学院;攀钢集团研究院有限公司; 出版日期：2019-06-15 出版单位：钢铁钒钛 年：2019 期：03 语种：中文; 页：96-100 页数：5 CN：51-1245/TF ISSN：1004-7638 分类号：TF703

摘要

针对攀西地区铁水/半钢预脱硫效果差异的问题,理论分析了脱硫前后炉渣成分以及物相对脱硫的影响。分析结果表明,脱硫后渣中硫含量为高炉渣/提钒渣的4～5倍,脱硫渣中硫以CaS的形式存在,未发现MgS;半钢脱硫渣平均CaO含量较铁水脱硫渣少15%,FeO含量多9%;铁水预脱硫后渣中低熔点物相含量较少,主要是mCaO·nAl_2O_3(<1 400℃),半钢脱硫渣中低熔点物相含量较多,主要是FeO(1 369℃)。增加脱硫剂喷入量,可以提高脱硫渣的固硫能力,减少回硫的发生。高炉渣和提钒渣作为顶渣进入预脱硫工序的渣量(以100 t铁水计)均在1～2 t。
        Effects of the chemical compositions and phases of the slags on desulphurization of molten iron and semi-steel were studied.Sulfur content in the desulfurized slag is 4～5 times higher than those of BF slag and vanadium-extracting slag.Sulfur exists in the form of CaS in the desulfurization slag,no MgS has been found.The average content of CaO in the semi-steel desulfurization slag is 15% less than that in the molten iron desulfurization slag,but FeO content is 9% more than that of later slag.The low melting point phases are few in the slag aftrer molten iron desulfurizationand mainly are mCaO·nAl_2O_3(<1 400 ℃).But for semi-steel desulfurization the low melting point phases has much higher content in the slag,mainly are FeO(1 369 ℃).Increasing desulfurizer injection amount can improve the sulfur control capacity of desulfurization slag,reducing resulfurization.BF slag as the top slag in the molten iron desulfurization process is 0.01～0.02 t/t,and the same as for vanadium-extracting slag.

引文

[1] Wang Xiaogang.Design and application of molten iron pretreatment system based on siemens PLC[D].Changchun:Jilin university,2015.(王小刚.基于西门子PLC的铁水预处理控制系统设计与应用[D].长春:吉林大学,2015.)
    [2] Qin Jiasheng,Duan Xiangdong,Xiao Mingfu,et al.Research on resulfurization control during converter tapping process[J].Iron Steel Vanadium Titanium,2014,35(6):75-80.(卿家胜,段向东,肖明富,等.半钢冶炼过程回硫控制研究[J].钢铁钒钛,2014,35(6):75-80.)
    [3] Shi Caixia,Li Zhongjing.Analysis and application of molten iron containing vanadium and titanium desulfurization process[J].Steelmaking,2014,51(4):281-288.(史彩霞,李中金.钒钛铁水脱硫工艺分析及实践[J].炼钢,2014,51(4):281-288.)
    [4] Ge W S,Gong H J,Jiang L K,et al.Study on process optimization of the vanadium containing molten iron pretreatment[J].Advanced Materials Research,2013,807:2389-2392.
    [5] Diao J,Xie B,Wang S S.Research on slag modifying agents for CaO-Mg based molten iron desulphurisation[J].Ironmaking & Steelmaking,2009,36(7):543-547.
    [6] Robert Iano?,Ioan Lazu,Cornelia Pcurariu,et al.Fuel mixture approach for solution combustion synthesis of Ca3Al2O6 powders[J].Cement and Concrete Research,2009,39(7):566-572.
    [7] Oeters F,Strohmenger P,Pluschkell W.Kinetik der entschwefelung von roheisenschmelzen mit kalk und erdgas[J].Steel Research International,1973,44(10):727-733.
    [8] Chen Changgui,Ma Guojun.Molten iron pretreatment[M].Beijing:Chemical Industry Press,2009:8.(程常桂,马国军.铁水预处理[M].北京:化学工业出版社,2009:8.)