1. Metallurgical Technology Institute, Central Iron and Steel Research Institute Co., Ltd., Beijing 100081, China; 2. Sichuan Desheng Group Vanadium and Titanium Co., Ltd., Leshan 614900, Sichuan, China; 3. State Key Laboratory of Advanced Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China
Abstract：At present, magnesia-carbon brick is used as the lining of vanadium extraction converter. It is of great practical value to evaluate the erosion rate and damage mechanism of different types of magnesia-carbon bricks for improving the service life of vanadium extraction converter. The static slag resistance method was used to simulate the erosion of six kinds of magnesia-carbon bricks under the condition of resistance furnace, and the corrosion resistance and mechanism of magnesia-carbon bricks to vanadium-rich slag were discussed. The results show that MT-C12B and MT-C14A samples are less thinned after erosion by slag. Among them, the erosion area of MT-C12B accounts for 2.98%, and the erosion area of MT-C14A accounts for 2.74%. From the microstructure of the sample erosion, the decarburization layer depth of MT-C12B is the smallest, which has little effect on the performance of magnesia-carbon brick, and is the best choice for vanadium extraction converter. The corrosion mechanism of the six magnesia-carbon bricks is basically the same. The graphite in the magnesia-carbon brick reacts with V2O3, Cr2O3 and FeO in the slag to form a metal phase, resulting in the exposure of MgO particles. The V2O3 in the slag enters the decarburization layer with the slag, reacts with MgO here, and forms a vanadium-containing spinel phase (MgV2O4) on the surface of the magnesia-carbon brick. Moreover, SiO2 and CaO in the liquid slag phase react with MgO particles to form a new low melting point liquid slag phase, and then complete the dissolution process of periclase. The formation of vanadium-containing spinel phase on the surface of MgO-C brick can significantly increase the densification degree of decarburization layer and prevent the further penetration of slag. Therefore, the erosion rate of the material gradually decreases, and finally a relatively slow erosion process is formed. The research results can provide a basis for improving the lining life of vanadium extraction converter.
李鹏,向国洪,王勇军,等. 钒的应用研究综述[J]. 化工管理,2021(1):72. (LI P, XIANG G H, WANG Y J, et al. Review of the application of vanadium[J]. Chemical Management, 2021(1): 72.)
[2]
赵进宣,肖峰,赵博,等. 环缝式底吹供气元件在铁水提钒中的应用[J]. 钢铁,2022,57(8):89. (ZHAO J X, XIAO F, ZHAO B, et al. Application of circular seam bottom blow gas supply element in extracting vanadium from vanadium-containing hot metal[J]. Iron and Steel, 2022, 57(8): 89.)
[3]
刘金生,丁学勇,薛向欣,等. 提钒尾渣资源化综合利用的研究进展[J]. 钢铁,2021,56(7):152. (LIU J S, DING X Y, XUE X X, et al. Research progress of comprehensive utilization of vanadium extraction tailings[J]. Iron and Steel, 2021, 56(7): 152.)
[4]
何佳,姜鑫,纪恒,等. 钒钛磁铁矿直接提钒的研究进展[J]. 中国冶金,2023,33(3):29. (HE J, JIANG X, JI H, et al. Research progress on direct extraction of vanadium from vanadium titanium magnetite[J]. China Metallurgy, 2023, 33(3): 29.)
[5]
常福增,赵备备,李兰杰,等. 钒钛磁铁矿提钒技术研究现状与展望[J]. 钢铁钒钛,2018 (5):71. (CHANG F Z, ZHAO B B, LI L J, et al. Research status and prospect of vanadium extraction technology from vanadium-titanium magnetite[J]. Iron Steel Vanadium Titanium, 2018 (5): 71.)
[6]
郭昕,王玲,郑康豪,等. 钒渣提钒工艺及研究进展[J]. 中国矿业,2016,25(增刊1): 435. (GUO X, WANG L, ZHENG K H, et al. Research progress of extraction technology for vanadium from vanadium slags[J]. China Mining Magazine, 2016, 25(S1): 435.)
[7]
杨素波,罗泽中,文永才,等. 含钒转炉钢渣中钒的提取与回收[J]. 钢铁,2005,40(4):4. (YANG S B, LUO Z Z, WEN Y C, et al. Extraction and recovery of vanadium from vanadium-bearing converter steel slag[J]. Iron and Steel, 2005, 40 (4): 4.)
[8]
陈勇,张大德. 转炉提钒工艺的开发与优化[J]. 中国冶金,2003,13(1):36. (CHEN Y, ZHANG D D. Development and optimization of vanadium extraction with converters[J]. China Metallurgy, 2003, 13(1): 36.)
[9]
吴龙,李士琦,迟桂友,等. 承钢100 t转炉提钒的过程特征[J]. 钢铁研究学报,2010,22(12):14. (WU L, LI S Q, CHI G Y, et al. Process characteristics of vanadium extraction from 100 t converter in Cheng Steel[J]. Journal of Iron and Steel Research, 2010, 22 (12): 14.)
[10]
高陟,马北越. 低碳MgO-C耐火材料性能优化研究进展[J]. 钢铁研究学报,2021,33(5):353. (GAO Z, MA B Y. Research progress on performance optimization of low-carbon MgO-C refractories[J]. Journal of Iron and Steel Research, 2021, 33 (5): 353.)
[11]
代文彬,李宇,苍大强,等. 转炉钢渣热态改性对镁质耐火材料的侵蚀行为[J]. 耐火材料,2013,47(2):81. (DAI W B, LI Y, CANG D Q, et al. Erosion behavior of magnesia refractories by thermal modification of converter steel slag[J]. Refractories, 2013, 47 (2): 81.)
[12]
潘贻芳,赵宏欣,吴燕,等. 转炉渣与镁质耐火材料的润湿机制[J]. 钢铁,2013,48(5):35. (PAN Y F, ZHAO H X, WU Y, et al. Wetting mechanism between molten slag and MgO-C refractories in converter[J]. Iron and Steel, 2013, 48(5): 35.)
[13]
陈洋,邓承继,娄晓明,等. 低碳MgO-C耐火材料结构和性能优化的研究进展[J]. 硅酸盐通报,2022,41(6):2153. (CHEN Y, DENG C J, LOU X M, et al. Research progress on structure and property optimization of low-carbon MgO-C refractories[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(6): 2153.)
[14]
敖进清,李楠,韩兵强. 含钒钢渣对镁碳砖的侵蚀[J]. 耐火材料,2006,40(4):287. (AO J Q, LI N, HAN B Q. Erosion of magnesia-carbon bricks by vanadium-containing steel slag[J]. Refractory, 2006, 40(4): 287.)
[15]
陈昱,张李宽. 炉渣对转炉镁碳砖侵蚀行为的实验研究[J]. 能源研究与信息,2019,35(3):163. (CHEN Y, ZHANG L K. Experimental study on slag erosion behavior of converter magnesia-carbon bricks[J]. Energy Research and Information, 2019, 35(3): 163.)
[16]
王广恩,王雨,谢兵,等. 转炉提钒渣对镁碳砖的侵蚀[J]. 钢铁钒钛,2011,32(2):53. (WANG G E, WANG Y, XIE B, et al. Erosion of MgO-C bricks by vanadium slag from converter[J]. Iron Steel Vanadium Titanium, 2011, 32(2): 53.)
[17]
CHEN M,XU L,HUANG W,et al. Properties of MgO-Fe-C refractories as linings of vanadium extraction converter[J]. Journal of the European Ceramic Society,2014,34(15):4011.
[18]
杨忠德,林鑫,王少阳,等. 镁质耐火材料用结合剂的应用进展[J]. 耐火材料,2023,57(2):180. (YANG Z D, LIN X, WANG S Y, et al. Progress in the application of binders for magnesia refractories[J]. Refractories, 2023, 57(2): 180.)
[19]
王长民,杨强,高钦,等. 提钒渣对莫来石-碳化硅材料的侵蚀研究[J]. 耐火材料,2010,44(1):17. (WANG C M, YANG Q, GAO Q, et al. Study on the corrosion of mullite-silicon carbide materials by vanadium slag[J]. Refractories, 2010, 44 (1): 17.)
[20]
HUANG W J,LIU Y J,CHEN M,et al. Corrosion mechanism of MgO-C bricks used as linings in a vanadium extraction converter[J]. International Journal of Applied Ceramic Technology,2020,17(3):1052.
[21]
张艳利,王宪,贾全利. 炼钢电炉用耐火材料的现状和发展[J]. 耐火与石灰,2019,44(3):7. (ZHANG Y L, WANG X, JIA Q L. Status and development of refractories used for steelmaking electric furnace[J]. Refractories & Lime, 2019, 44(3): 7.)
[22]
REN X,MA B,LIU H,et al. Designing low-carbon MgO-Al2O3-La2O3-C refractories with balanced performance for ladle furnaces[J]. Journal of the European Ceramic Society,2022,42(9):3986.
[23]
SI Y,ZHANG F,LI X,et al. Thermodynamic calculation and microstructure characterization of spinel formation in MgO-Al2O3-C refractories[J]. Ceramics International,2022,48(11):15525.
[24]
LUO J,REN X,CHONG X,et al. Recent progress in synthesis of composite powders and their applications in low-carbon refractories[J]. Journal of Iron and Steel Research International,2022,29(7):1041.
[25]
YU C,DONG B,CHEN Y,et al. Enhanced oxidation resistance of low-carbon MgO-C refractories with ternary carbides:A review[J]. Journal of Iron and Steel Research International,2022,29(7):1052.
[26]
YUAN C,LIU Y,LI G,et al. Comparison study on effect of nano sized Al2O3 addition on the corrosion resistance of microporous magnesia aggregates against tundish slag[J]. Ceramics International,2022,48(4):5139.
[27]
王恩会,陈俊红,侯新梅. 钢包工作衬用耐火材料的研究现状及最新进展[J]. 工程科学学报,2019,41(6):695. (WANG E H, CHEN J H, HOU X M. Research status and latest progress of refractory materials for ladle lining[J]. Journal of Engineering Science, 2019, 41(6): 695.)
[28]
HUO Y,GU H,HUANG A,et al. Characterization and mechanism of dissolution behavior of Al2O3/MgO oxides in molten slags[J]. Journal of Iron and Steel Research International,2022,29(11):1711.
[29]
HUANG W,XU L,ZHANG S,et al. Improvement on performance of Mg-C refractories as lining of vanadium-extraction converters[J]. Characterization of Minerals, Metals, and Materials 2015, 2016: 177.
[30]
樊新丽,顾华志,蔡鄂汉,等. 不同碳含量的镁碳砖抗渣侵蚀性能研究[J]. 武汉科技大学学报,2009,32(4):394. (FAN X L, GU H Z, CAI E H, et al. Study on slag corrosion resistance of magnesia-carbon bricks with different carbon content[J]. Journal of Wuhan University of Science and Technology, 2009, 32(4): 394.)
[31]
陈家祥. 炼钢常用图表数据手册[M]. 北京:冶金工业出版社,1984. (CHEN J X. Handbook of Commonly Used Charts and Data for Steelmaking[M]. Beijing: Metallurgical Industry Press, 1984.)
2024, Vol. 34 
