65 t转炉氧枪喷头工艺参数优化

炼钢

65 t转炉氧枪喷头工艺参数优化

(1.东北大学材料与冶金学院，辽宁沈阳 110819；
2.河北钢铁集团唐钢公司长材部，河北唐山 063016；
3.华北理工大学冶金与能源学院，河北唐山 063009)

接受日期:1900-01-01 出版日期:2016-04-05

Parameter optimization of oxygen lance in 65 t converter

Accepted:1900-01-01 Online:2016-04-05

摘要/Abstract

摘要： 针对河北钢铁集团唐钢公司长材部65 t转炉冶炼过程中化渣效果差、炉渣返干严重，从而造成氧枪粘渣粘钢严重、喷头侵蚀严重、喷头非正常消耗高的生产问题，对氧枪喷头工艺参数和经济枪龄进行了优化研究。结果表明：优化后的喷头，开吹枪位降低100 mm，过程枪位降低200 mm，喷头前期化渣效果良好；吹氧时间、冶炼周期和氧耗变化不大，可以满足生产要求；一次拉碳钢水磷含量合格率提高11.43 %，终渣w(FeO)降低0.25 %。随着氧枪枪龄的增加，吹氧时间、冶炼周期和造渣料消耗变化不大。枪龄超过200炉后，钢铁料消耗升高4.99 kg/t；枪龄增加50炉，冷料消耗升高0.62 kg/t；枪龄增加100炉，终渣w(FeO)升高1.3 %。综合考虑，65 t转炉经济枪龄为200炉。

关键词: 65 t转炉, 氧枪喷头, 工艺参数, 经济枪龄

Abstract: The percentage of abnormal loss such as sticking steel and slag for 65 tconverter oxygen lance was larger in Tangshan Iron and Steel Company. The poor smelting slag and dry slag in smelt process was the main reason. Therefore, it was necessary to optimize the process parameter and oxygen nozzle life. The research results were shown as follows. For the optimized nozzle, the open blowing position of oxygen lance decreased by 100 mm and the process blowing position of oxygen lance decreased by 200 mm，the slag melting effect was good in smelting process. The variation of oxygen blowing time, smelting period and the oxygen consumption was little. The qualified rate of phosphorus content in steel increased 11.43 %. The FeO mass fraction in final slag decreased 0.25 %. The nozzle life was more than 200 heats, the steel consumption increased by 4.99 kg/t. The cold burden consumption increased 0.62 kg/t with the nozzle life increasing 50 heats. The FeO mass fraction in final slag increased 1.3 % with the nozzle life increasing 100 heats. Therefore, the economical nozzle life for 65 tconverter was 200 heats.

Key words: 65 t converter, nozzle of oxygen lance, process parameter, economical nozzle life

郝华强1,2，张朝发2，刘善喜2，张玉柱1,3，郝素菊3. 65 t转炉氧枪喷头工艺参数优化[J]. 炼钢.

[1]	张燕超1,2,张彩军1,2,王博1,2，周泉林2. 高马赫数氧枪枪位对100 t转炉自动炼钢熔池流速的影响[J]. 炼钢, 2019, 35(2): 1-10.
[2]	张燕超1,2，张彩军1,2,周泉林2. 高马赫数氧枪的数值模拟及优化实践[J]. 炼钢, 2018, 34(6): 1-6.
[3]	张彦恒1，2 . 攀钢200t炼钢转炉氧枪设计与应用[J]. 炼钢, 2018, 34(3): 1-4.
[4]	王鹏1，印传磊2，吴伟1，崔怀周1，李相臣1，郑力宁2. 100 t顶底复吹转炉氧枪喷头优化的试验研究[J]. 炼钢, 2017, 33(6): 9-14.
[5]	王强强;张立峰;杨文;田志红;王国瑞. 连铸机液位波动数据处理的改进[J]. , 2014, 30(2): 70-74.
[6]	胡建光;刘正祥;郑毅. 转炉冶炼中磷铁水动力学条件的优化[J]. , 2012, 28(4): 51-53.
[7]	陈健;朱立光;果晶晶. FTSC薄板坯裂纹影响因素分析与控制[J]. , 2010, 26(6): 17-20.
[8]	赖朝彬;辛博; 陈伟庆;吕瑞国;吴绍杰;. 连铸板坯二次枝晶间距对中心碳偏析的影响[J]. , 2009, 25(04): 42-45.
[9]	卢凯;陈念铀. 250 t转炉生产的用氧实践[J]. , 2008, 24(05): 1-4.
[10]	高文芳;张剑君;陈钢;易卫东;李强;邹宗树. 复吹转炉氧枪喷头优化研究[J]. , 2007, 23(05): 13-17.
[11]	冯科;韩志伟;王勇;毛敬华. 仿真计算在板坯连铸机工程设计中的应用[J]. , 2007, 23(05): 49-52.