为了提升高导热炭砖的抗侵蚀性,以人造石墨(≤0.075、≤1 mm)、Si粉(≤0.045 mm)、Al粉(≤0.075mm)、活性Al2 O3(2μm)为原料,酚醛树脂为结合剂,分别外加质量分数6％的TiO2、TiC微粉,经混料、成型,于1 200和1 400℃埋炭热处理后制备了高炉用炭砖试样,研究了TiO2 、TiC微粉对试样的物相变化、微孔结构、热导率及抗铁水侵蚀等性能的影响.结果表明:经1 400℃埋炭热处理后,外加6％(w)TiO2试样原位生成了Ti(C,N)和TiN,而引入的TiC较为稳定,在热处理过程中未与其他组分发生反应,且外加6％(w)TiO2试样在SiC晶须的密集区生成了Ti(C,N),与其他试样相比,SiC晶须的量较多,长径比较大;外加6％(w)TiO2试样的平均孔径低于100 nm,小于1μm孔的孔容积率达90％,室温热导率达53.43W·m-1· K-1;抗铁水侵蚀性试验显示,通过引入TiO2原位形成Ti(C,N)的炭砖试样,其抗铁水熔损性优于直接引入TiC的试样.
参考文献
| [1] | 张福明;程树森.现代高炉长寿技术[M].北京:冶金工业出版社,2012:30. |
| [2] | 肖英龙.高炉用耐火材料的损毁[J].国外耐火材料,2002(02):7-10. |
| [3] | Chen Xilai;Li Yawei;Li Yuanbing et al.Effect of carbon aggregates on the properties of carbon refractories for blast furnace[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,2010,41(B):420-429. |
| [4] | Schacht C A.Refractories Handbook[M].New York:Marcel Dekker,Inc,2004:201-202. |
| [5] | 程坤明,J(o)rg Mittag.影响高炉炉底炉缸炭砖使用寿命的因素[J].炼铁,2006(01):11-15. |
| [6] | Silva N;Vernilli J;Justus M et al.Wear mechanism for blast furnace hearth refractory lining[J].Ironmaking and Steelmaking,2005,32(6):459-465. |
| [7] | Zheng-jian LIU;Jian-liang ZHANG;Hai-bin ZUO .Recent Progress on Long Service Life Design of Chinese Blast Furnace Hearth[J].ISIJ International,2012(10):1713-1723. |
| [8] | 李亚伟,陈希来,李远兵,金胜利,葛山,赵雷,李淑静.焙烧炭砖孔结构和热导率与硅粉加入量的关系[J].耐火材料,2008(06):401-404,408. |
| [9] | 葛山,尹玉成,刘志强,肖继明.高炉炭砖导热系数的测定[J].炼铁,2008(02):47-50. |
| [10] | Nitta M;Nakamura H.Investigation of used carbon blocks for blast furnace hearth and development of carbon blocks with high thermal conductivity and high corrosion resistance[A].Osika,Japan,2003:377-380. |
| [11] | Narita K;Maekawa M;Onoye T et al.Formation of titanium compounds,so-called titanium bear,in the blast furnace hearth[J].Trans Iron Steel Inst Japan,1976,62(5):525-534. |
| [12] | Yun LI;Yongquan LI;Richard J. FRUEHAN .Formation of Titanium Carbonitride from Hot Metal[J].ISIJ International,2001(12):1417-1422. |
| [13] | D.W.Stothart;R.D.Chaykowski .Hearth Monitoring Experiences at Dofasco's No.4 Blast Furnace[J].Iron & Steelmaker,1997(12):43-50. |
| [14] | Okada T;Kuwano K;Shimomura K.Protection of blast furnace hearth refractories by TiO2 injection through tuyeres[A].Sendai,Japan,1991:307-312. |
| [15] | C. H. Lin;W. T. Cheng;S. W. Du .Numerical prediction on the variation of temperature in the eroded blast furnace hearth with titanium dioxide in hot metal[J].International Communications in Heat and Mass Transfer: A Rapid Communications Journal,2009(4):335-341. |
| [16] | Koc R.;Folmer JS. .CARBOTHERMAL SYNTHESIS OF TITANIUM CARBIDE USING ULTRAFINE TITANIA POWDERS[J].Journal of Materials Science,1997(12):3101-3111. |
| [17] | 翟兴华,胡慧丽.含钛物料护炉方法的探讨[J].钢铁研究,1999(04):7-10. |
| [18] | Takanobu INADA;Atsuya KASAI;Kaoru NAKANO .Dissection Investigation of Blast Furnace Hearth-Kokura No. 2 Blast Furnace (2nd Campaign)[J].ISIJ International,2009(4):470-478. |
| [19] | Li Yiwei;Li Yawei;Sang Shaobai et al.Preparation of ceramicbonded cation block for blast furnace[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2014,45(1):477-481. |
| [20] | 邹祖桥,宋木森,唐德明.国内外高炉炭砖的现状及发展[J].钢铁,2004(08):117-120. |
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