电磁场会促使熔渣中的铁、锰离子与MgO-C耐火材料反应形成锰掺杂镁铁尖晶石相,为进一步研究锰掺杂镁铁尖晶石的生成形貌及特征,采用Fe2O3质量分数为53.62％、CaO与SiO2质量比为0.8的高铁渣,分别在有、无电磁场环境下,对碳质量分数为14％的MgO-C耐火材料进行渣蚀试验.结果表明:感应炉存在电磁场,使熔渣中部分Fe2 +/Fe3+与镁砂中Mg2+发生置换形成镁铁尖晶石,其含有少量Mn2+离子；镁铁尖晶石中铁含量从渣蚀层到渗透层急剧降低,锰含量几乎维持不变；侵蚀后试样渗透层较明显.电阻炉无电磁场,则侵蚀后试样没有形成镁铁尖晶石,熔渣中Si、Ca渗透到方镁石晶格中,形成钙镁榄橄石低熔相,将镁砂溶解到熔渣中；渣蚀层有明显的MgAl2O4生成.
参考文献
| [1] | J. Waligora;D. Bulteel;P. Degrugilliers .Chemical and mineralogical characterizations of LD converter steel slags: A multi-analytical techniques approach[J].Materials Characterization,2010(1):39-48. |
| [2] | M. Bavand-Vandchali;H. Sarpoolaky;F. Golestani-Fard .Atmosphere and carbon effects on microstructure and phase analysis of in situ spinel formation in MgO-C refractories matrix[J].CERAMICS INTERNATIONAL,2009(2):861-868. |
| [3] | Takeo INOMOTO;Yuji OGAWA;Takehiko TOH .Promotion of Desulphurization in Ladle through Slag Emulsification by Stirring with Stationary AC Electromagnetic Field[J].ISIJ International,2003(6):828-835. |
| [4] | 李享成,王堂玺,姜晓,朱伯铨.电磁场对MgO-C耐火材料抗熔渣侵蚀性的影响[J].硅酸盐学报,2011(03):452-457. |
| [5] | 王堂玺,李享成,姜晓,徐平,朱伯铨.电磁场对低碳MgO-C耐火材料渣蚀性能的影响研究[J].材料工程,2010(z2):421-424. |
| [6] | 李享成,王堂玺,姜晓,徐平,朱伯铨.电磁场对形成MgO-C质耐火材料MgO致密层的影响[J].硅酸盐学报,2011(11):1752-1756. |
| [7] | Li X C;Wang T X;Zhu B Q.Effect of electromagnetic field on the slag reistance of MgO-C refractories[A].Osaka,Japan,2010 |
| [8] | Aneziris C G;Hampcl M .Microtructured and electro-assisted hightemperature wettability of MgO in contact with a silicate slag-based on fayalite[J].Int J Appl Ceram Techno1,2008,5(05):469-479. |
| [9] | L. B. Khoroshavin;V. B. Shcherbatskii .AN ELECTRONIC TECHNOLOGY FOR REFRACTORIES BASED ON THE PERIODIC LAW1[J].Refractories and Industrial Ceramics,2005(5):344-351. |
| [10] | W. E. Lee;S. Zhang .Melt corrosion of oxide and oxide-carbon refractories[J].International Materials Reviews,1999(3):77-104. |
| [11] | Phillips B;Muan A .Phase equilibria in the system MgO-FeO-Fe2O3 iu temperature range 1 400 to 1 800 ℃[J].Journal of the American Ceramic Society,1962,45(12):588-591. |
| [12] | Sune Jansson;Voicu Brabie;Par Jonsson .Corrosion mechanism and kinetic behaviour of MgO-C refractory material in contact with CaO-Al_2O_3-SiO_2-MgO slag[J].Scandinavian Journal of Metallurgy,2005(5):283-292. |
| [13] | M. Guo;S. Parada;P.T. Jones .Degradation mechanisms of magnesia-carbon refractories by high-alumina stainless steel slags under vacuum[J].CERAMICS INTERNATIONAL,2007(6):1007-1018. |
| [14] | Lioubashevski O;Katz E;Wilner I .Magnetic field effects ou electrochemical processes:A theoretical hydrodynamic model[J].Journal of Physical Chemistry B,2004,108(18):5778-5784. |
| [15] | Marie-Aline Van Ende;Muxing Guo;Peter Tom Jones .Degradation of MgO-C refractories by MnO-rich stainless steel slags[J].CERAMICS INTERNATIONAL,2009(6):2203-2212. |
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