350 t转炉终点炉渣成分控制研究
Study on Final Slag Composition Control of 350 t Converter
摘要: 通过对宝钢湛江钢铁炼钢厂350 t复吹转炉冶炼过程磷质量分数的控制研究，从热力学上分析了炼钢终点渣钢间磷分配比较低的原因，以及要得到相应脱磷率和终点磷分配比时转炉终渣碱度的最佳值，同时给出了转炉终点炉渣成分的调节方向。研究结果表明，在现有工艺条件下，转炉渣量偏大，碱度偏高是转炉磷分配比实际值与理论值差距较大的主要原因。通过计算，在现有工艺水平下，转炉渣的加入量应控制在70 kg/t(钢)较为合适。
Abstract: An investigation was carried out on control of phosphorus content in 350 t Combined Blowing Con-verter of Zhanjiang Iron & Steel. The reason for low phosphorus distribution ratio between slag and steel at the end of steelmaking was analyzed thermodynamically. In the meantime, the suggestions for adjusting composition of converter slag were given, and the optimum basicity of slag to get the corresponding dephosphorization rate and phosphorus distribution ratio was determined. The results showed that, under the condition of existing technology, high basicity and the great amount of slag resulted in relatively large difference between the measured and theoretical phosphorus distribution ratio. The calculation indicated that, for the existing process, the amount of slag to be added into converter should be controlled in 70 kg/t.
文章引用：罗俊斌, 兰天. 350 t转炉终点炉渣成分控制研究[J]. 冶金工程, 2020, 7(4): 224-231. https://doi.org/10.12677/MEng.2020.74031

参考文献

[1] 王能贤. 磷对钢冲击韧性的影响[J]. 特殊钢, 1993(4): 53.
[2] 吴伟, 邹宗树. 转炉冶炼终点炉渣氧化性和碱度的研究[J]. 炼钢, 2004, 20(3): 28-32.
[3] 刘飞, 管挺. 转炉吹炼过程炉渣的变化及其对脱磷的影响[J]. 炼钢, 2013, 29(6): 23-28.
[4] Wagner, C. (1975) Concept of Basicity of Slags. Metallurgical Transactions B, 6, 405. [Google Scholar] [CrossRef] 
[5] Nakamura, S., Tsukihashi, F. and Sano, N. (1993) Phosphorus Partition between CaOsatd-BaO-SiO2--FetO Slags and Liquid Iron at 1873K. ISIJ International, 33, 53. [Google Scholar] [CrossRef] 
[6] Suito, H. and Inoue, R. (1995) Thermodynamic Assessment of Hot Metal and Steel Dephosphorization with MnO- Containing BOF Slags. ISIJ International, 35, 258-265. [Google Scholar] [CrossRef] 
[7] 潘贻芳, 杜玲. 转炉炉渣的渣化度[J]. 钢铁, 1994, 29(8): 13-15.
[8] 朱荣, 董履仁, 张鉴. CaO-SiO2-FeO-Fe2O3-MgO渣系MgO饱和溶解度的研究[J]. 炼钢, 1998, 5(11): 24-26.
[9] 周兆保, 李素梅, 程官江. 安钢转炉渣中MgO的饱和溶解度分析[J]. 耐火材料, 2000(4): 248-252.
[10] 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, 2(8): 12-15.
[11] Tayed, M.A., Assis, A.N., Sridhar, S., et al. (2015) MgO Solubility in Steelmaking Slags. Metallur-gical and Materials Transaction B, 46, 1112-1114. [Google Scholar] [CrossRef] 
[12] Suito, H. and Inoue, R. (2014) Experimental Measurement of the Solubility of MgO in Metallurgical Slags to Control the Slag-Induced Corrosion of Periclase-Carbon Refractories. Refractories & Industrial Ceramics, 55, 114-116. [Google Scholar] [CrossRef] 

为你推荐