RH精炼用无铬刚玉-尖晶石砖侵蚀机理研究
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摘要
以电熔白刚玉、烧结刚玉、电熔镁铝尖晶石、金属铝粉、硅粉为原料,制备金属复合刚玉-尖晶石不烧砖,并在RH精炼炉下部槽中进行现场试用。结果表明,用后残砖由外向内可依次划分为侵蚀层、增强相层和原砖层。经分析表明,侵蚀层厚约1cm,Fe以FeO和Fe_2O_3两种形式存在,其中FeO与Al_2O_3反应生成了铁铝尖晶石固溶体(Al_(15.44)Fe_(6.16)Mg_(2.32)O_(32));增强相层形成了粒径约2um的尖晶石结构的Mg-Al-O-N固溶体及片状21R-AlN多型体(SiAl_6O_2N_6)增强相,并对其形成机理进行研究。
引文
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[2]徐国群.RH精炼技术的应用与发展[J].炼钢,2006,22(1):12~15
[3]田文洲.RH真空炉耐材使用寿命的影响因素及改进措施[J].金属世界,2009,(1):31~34
[4]陈肇友.RH精炼炉用耐火材料及提高其寿命的途径[J].耐火材料,2009,43(2):81~95
[5]武文林.RH炉用优质镁铬砖的损毁机理研究[D].西安建筑科技大学,2003,10
[6]李楠,匡加才.碱性耐火材料脱磷作用的研究[J].耐火材料,2000,34(5):249~251
[7]董计太.RH炉浸渍管用方镁石-镁铝尖晶石质耐火材料性能研究[D].辽宁科技大学,2016,1
[8]赵明,陈荣荣,沈钟铭,金从进.宝钢RH精炼炉用耐火材料无铬化的实现[J].耐火材料,2013,47(6):433~436
[9]Mori J,Watanabe W,Yoshimura M,et al.Material Design of Momnolithic Refractories for Steel Ladle[J].Am.Ceram.Soc.Bull.,1990,69(7):1172~1176
[10]Nagai B,Matsumoto O,Isobe T,et al.Wear Mechanism of Castable for Steel Ladle by Slag[J].Taikabutsu Overseas,1992,12(1):15~20
[11]Kurata K,Matsui T,Sakaki S.Castable Lining Technique to Bottom of Teeming Ladle[J].Taikabutsu Overseas,1992,12(1):29~39
[12]Mingwei Yan,Yong Li,et al.Evolution mechanism of Mg Al ON in the Al-Al2O3-Mg O composite at 1800°C in flowing nitrogen[J].Ceramics International,2017,44(4)
[13]SH Tong,Y Li,et al.In situ reaction mechanism of MgAl ON in Al-Al2O3-Mg O composites at 1700℃under flowing N2[J].International Journal of Minerals Metallurgy and Materials,2017,24(9):1061~1066
[14]Collongues,R.,Colin,F.Thery,J.,Michel,D.&Perez y Jorba,M.Reduction and nitridation reactions in aluminabased ceramics.Bull.Soc.Fr.Ceram.,1967,77:51
[15]Goro Yamaguchi,Hiroaki Yanagida.Study on the Reductive Spinel-A New Spinel Formula Al N-Al2O3instead of the Previous One Al3O4[J].J.Ceram.Assoc.Japan(Yogyo Kyokai Shi),66,44(1958)
[16]Normand D.Corbin.Aluminum Oxynitride Spinel:A Review[J].Journal of the European Ceramic Society,1989,5(3):143~154
[17]Haixia Qin,Yong Li,Peng Jiang*.In-situ synthesis of Al ON reinforcing phases in resin bonded Al2O3composite materials[J],Journal of Alloys and Compounds,2017,711:1~7
[18]Weiss,J.Dreil,P.and Gauckler,L.J.,The system Al-Mg-O-N[J],J.Am.ceramic.Soc.,1982,65:68~69
[19]H.X.Willems,G.de With*&R.Metselaar.Thermodynamics of Alon III:Stabilization of Alon with Mg O[J].Journal of the European Ceramic Society,1993,12:43~49