采用静滴法研究了2种情况下转炉渣与炉衬耐火材料的润湿性.当转炉渣与耐火材料直接接触时,转炉渣不熔化,当用刚玉坩埚将两者隔开时,界面处发生反应性润湿,动态接触角随温度升高而单调减小,铺展面积随时间成线性增加.渣中FeO含量由于镁碳砖基板表面的碳及中间产物CO的还原而降低,导致炉渣熔化性温度升高而未熔化.液态熔渣沿镁碳砖表面的气孔和裂纹向基体内扩散、渗透,渣中铁氧化物与镁碳砖机体内的MgO反应生成含高熔点相的黄色渗透层,起到保护炉衬的作用,从而解释了炉渣与耐火材料的粘附机制,为优化溅渣护炉工艺,合理调整炉渣成分和选择耐火材料等工艺操作提供理论依据.
参考文献
[1] | Matti J. LUOMALA;Timo M. J. FABRITIUS;Esa O. VIRTANEN;Tero P. SIIVOLA;Tapio L. J. FABRITIUS;Heikki TENKKU;Jouko J. HAERKKI .Physical Model Study of Selective Slag Splashing in the BOF[J].ISIJ International,2002(11):1219-1224. |
[2] | Kenneth C. MILLS;Yuchu SU;Alistair B. FOX;Zushu LI;Richard P. THACKRAY;H. T. TSAI .A Review of Slag Splashing[J].ISIJ International,2005(5):619-633. |
[3] | 徐静波,佟溥翘.复吹转炉在溅渣下的长寿复吹效果[J].炼钢,2002(03):6-9,14. |
[4] | 徐培江,王冰民,崔庆成,董光欣.溅渣护炉在炼钢生产中的应用[J].冶金丛刊,2004(04):19-20,28. |
[5] | Liangcai Zhong;Yingxiong Zhu;Maofa Jiang .Cold Modelling of Slag Splashing in LD Furnace by Oxygen Lance with Twisted Nozzle Tip[J].Steel Research International,2005(9):611-615. |
[6] | V. SAHAJWALLA;A. S. MEHTA;R. KHANNA .Influence of Chemical Compositions of Slag and Graphite on the Phenomena Occurring in the Graphite/Slag Interfacial Region[J].Metallurgical and Materials Transactions, B. Process metallurgy and materials processing science,2004(1):75-83. |
[7] | Arun Shankar MEHTA;Veena SAHAJWALLA .Coal-char/Slag Interactions during Pulverised Coal Injection in a Blast Furnace: Reaction Kinetics and Wetting Investigations[J].ISIJ International,2003(10):1512-1518. |
[8] | Mehta A;Sahajwalla V .Influence of Composition of Slag and Carbonaceous Materials on the Wettability at the Slag/Carbon Interface During Pulverised Coal Injection in a Blast Furnace[J].Scandinavian Journal of Metallurgy,2003,29(01):17. |
[9] | Pan W;Sano M;Hirasawa M et al.Kinetics of Carbon Oxidation Reaction Between Molten Iron of High Carbon Concentration and Iron Oxide Containing Slag[J].ISIJ International,1991,31(04):358. |
[10] | 宋佳强 .钢渣梯级利用的应用基础研究[D].西安建筑科技大学,2007. |
[11] | 王维邦.耐火材料工艺学[M].北京:冶金工业出版社,1994 |
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