65t转炉氧枪喷头工艺参数优化  

Parameter optimization of oxygen lance in 65t converter

作　　者：郝华强[1,2] 张朝发 刘善喜 张玉柱[1,3] 郝素菊 

机构地区：[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

出　　处：《炼钢》2016年第2期9-11,24,共4页Steelmaking

基　　金：国家自然科学基金资助项目(51174075)

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。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.

关 键 词：65 t转炉 氧枪喷头 工艺参数 经济枪龄 

分 类 号：TF724.3[冶金工程—钢铁冶金]