Z.H.Wu
金属学报(英文版)
The effects of operation parameters of combined blowing converter on the volumetric mass transfer coefficient between slag and steel are studied with a cold model with water simulating steel, oil simulating slag and benzoic acid as the transferred substance between water and oil.The results show that, with lance level of 2.1m and the top blowing rate of 25000Nm^3/h, the volumetric mass transfer coefficient changes most significantly when the bottom blowing rate ranges from 384 to 540Nm^3/h. The volumetric mass transfer coefficient reaches its maximum when the lance level is 2.1m, the top blowing rates is 30000NmS/h, and the bottom blowing rate is 384Nm^3/h with tuyeres located symmetrically at 0.66D of the converter bottom.
关键词:
combined blowing converter
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null
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null
曾加庆
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杨利彬
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王杰
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刘晓亮
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姚同路
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戴诗凡
钢铁
doi:10.13228/j.boyuan.issn0449-749x.20160442
在分析讨论复吹转炉冶炼过程脱磷反应规律、常规转炉冶炼过程脱磷弊端的基础上,探讨了转炉冶炼过程脱磷时机选择与合理控制机制.基于转炉脱磷热力学与动力学条件分析得出,底吹搅拌能兼顾渣-钢界面搅拌和控制脱磷温度,是提高脱磷效率的主要动力学手段.通过水模试验模拟渣-钢之间的传质现象得出,转炉底吹元件数量和底吹强度的不同组合与渣-钢界面间的有效传质存在合适的匹配关系,随着转炉底吹强度增加,底吹元件个数应适当增加.转炉长寿命复吹效果不但取决于合理的供气元件选型、数量、布置及供气模式,更要依靠科学的底吹维护工艺制度.
关键词:
复吹转炉
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底吹搅拌
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渣-钢界面
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传质
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脱磷效率
万友堂
钢铁
在济钢条件下,采用常规的铁水脱硫加转炉双渣的冶炼工艺生产低磷钢,很难将成品ω(P)稳定控制在0.010％以下.基于转炉双渣大渣量生产试验,采用回归分析研究了影响冶炼过程脱磷效率的主要因素,确定了最佳的双渣吹炼时间、过程温度和炉渣成分控制,大幅度提高了冶炼过程的脱磷效率.该工艺在9Ni、高级别管线(X90/X100)的生产中得到广泛应用,成品ω(P)稳定控制在0.006％以下,最低达到了0.004％,实现了低磷钢的批量生产.
关键词:
复吹转炉
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低磷钢
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双渣工艺
