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Effect of Ti(C,N) on desulfurization capacity of high-titanium-type blast furnace slag |
XIE Hong-en |
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China |
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Abstract Based on the production of slag samples, the high-titanium-type blast furnace slag with different Ti (C,N) content was prepared by using coke as a reducing agent. The effect of Ti (C,N) on the distribution coefficient of sulfur between slag and iron LS was investigated at different temperatures. Under the experimental conditions, the effect of temperature on the desulfurization capacity of high-titanium-type blast furnace was far more significant than that of Ti(C,N). Ti(C,N) had excellent wettability with slag, so ions in slag can be absorbed around Ti(C,N) particles, which can reduce the activity of free migration of ions in slag and hence reduce the desulfurization ability of slag to some extent. However, since Ti(C,N) was not uniformly distributed in the slag in the form of aggregation, its influence scope was limited and the free oxygen ions in most areas of the slag were not significantly affected. Hence the effect on Ti(C,N) on the thermodynamic and kinetic conditions of the desulfurization reaction was little. At the same temperature, as the mass fractions of Ti(C,N) increasing, although the apparent viscosity of slag increased significantly, the distribution coefficient of sulfur between slag and iron i.e. LS did not decrease significantly. However, at the same mass fraction of Ti(C,N), the thermodynamic and kinetic conditions of the desulfurization reaction were significantly improved with the increase of temperature, so the distribution coefficient of sulfur between slag and iron LS increased significantly.
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Received: 03 June 2019
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[1] |
李殷泰,段振瀛.含钛炉渣脱硫能力的研究[J].钢铁钒钛,1984,5(3):19.
|
[2] |
李琦,周泽瑞,周毓华,等.高炉含钛炉渣脱硫能力的研究[J].昆明工学院学报,1987,10(2):30.
|
[3] |
曲彦平,杜鹤桂.MnO高钛渣的脱硫能力[J].东北大学学报:自然科学版,1996,17(6):605.
|
[4] |
魏寿昆.从炉渣离子理论计算的硫分配比看攀钢钒钛铁矿中TiO2的属性[J].钢铁钒钛,1988,9(4):1.
|
[5] |
王喜庆.论高钛型炉渣高炉冶炼中TiO2的属性[J].钢铁钒钛,1989,10(2):1.
|
[6] |
张淑会,穆红旺,孙艳芹,等.高铝中钛高炉渣脱硫的动力学机制[J].钢铁,2012,47(8):13.
|
[7] |
张旭升,吕庆,刘小杰,等.高炉炉渣中钛、镁、铝最优配比[J].钢铁,2015,50(6):8.
|
[8] |
张康晖,张延玲,吴拓,等.CaO-SiO2-Al2O3-Na2O-TiO2渣铁水脱硫动力学[J].钢铁,2018,53(11):22.
|
[9] |
许仁泽,张建良,张贺顺,等.TiO2对京唐高炉渣性能的影响及热力学分析[J].钢铁,2017,52(9):104.
|
[10] |
林衍先,尹文超.高炉低钛渣脱硫能力的研究[J].钢铁,1987,22(2):1.
|
[11] |
鄢毓章,周培土,兰洪,等.高炉低钛渣脱硫能力的研究[J].炼铁,1987,6(6):9.
|
[12] |
白晨光,裴鹤年,周培土.含钡低钛高炉渣硫分配系数的研究[J].重庆大学学报,1994,17(5):99.
|
[13] |
李航,丁跃华,陈文达.高炉炉缸形成Ti(C,N)黏结层的实验室模拟[J].昆明理工大学学报:理工版,2010,35(6):15.
|
[14] |
白晨光,裴鹤年,周培土.含钛高炉渣中性条件下的物性研究[J].四川冶金,1992,14(4):6.
|
[15] |
白晨光,裴鹤年,赵诗金,等.碳氮化钛粒度与熔渣黏度关系的研究[J].钢铁钒钛,1995,16(3):6.
|
[16] |
ZHEN Y L,ZHANG G H,CHOU K C.Viscosity of CaO-MgO-Al2O3-SiO2-TiO2 melts containing TiC particles[J].Metallurgical and Materials Transaction B,2015,46:155.
|
[17] |
吕庆,黄宏虎,陈树军,等.固体碳和TiC含量对含钛高炉渣性能的影响[J].钢铁钒钛,2015,36(2):84.
|
[18] |
谢洪恩,秦兴国,郑魁,等.高钛型高炉渣熔化性温度影响因素分析[J].中国冶金,2017,27(9):1.
|
[19] |
黄希祜.钢铁冶金原理[M].北京:冶金工业出版社,2013.
|
[20] |
Mills K C,Sridhar S.Viscosities of ironmaking and steelmaking slags[J].Ironmaking and Steelmaking,1999,26(4):262.
|
[21] |
Sosinsky D J,Sommerville I D.The composition and temperature dependence of the sulfide capacity of metallurgical slags[J].Metallurgical and Materials Transaction B,1986,17(2):331.
|
[22] |
白晨光.含钛高炉渣的若干物理化学问题研究[D].重庆:重庆大学,2003.
|
[23] |
Roscoe R.The viscosity of suspensions of rigid spheres[J].British Journal of Applied Phisics,2002,3(8):267.
|
[24] |
马世伟.高钛型高炉渣泡沫化机理的研究[D].重庆:重庆大学,2013.
|
|
|
|