邯宝大型转炉炼钢工艺优化的研究

炼钢

邯宝大型转炉炼钢工艺优化的研究

何顺生1，杨文远2，李任春1，王明林3，唐文明1，冯超2

（1.邯郸钢铁公司邯宝钢厂，河北邯郸056015；2. 钢铁研究总院工艺所，北京 100081；3.钢铁研究总院连铸技术国家工程研究中心，北京 100081）

接受日期:1900-01-01 出版日期:2019-10-05

Research on optimization of steelmaking process for large converter in Hanbao steel

Accepted:1900-01-01 Online:2019-10-05

摘要/Abstract

摘要： 为了解决邯郸钢铁公司邯宝钢厂260t转炉炼钢吹炼前期脱磷率低，终点钢中氧含量高，出钢温度偏低和枪龄短等问题，对炼钢过程进行了取样、测温，记录和分析关键操作参数等一系列调研。根据调研结果采取了优化氧枪喷头参数和吹炼枪位曲线，加强透气砖维护，测量了氧气管道压力损失和喷头射流流场特性，进行了射流与熔池作用的水模试验。采用上述工艺优化措施后，转炉脱磷效果得到改善，终点钢中碳氧积降低到0.002 39，出钢温度平均1 645℃，枪龄平均提高1倍，达到320炉。其他如钢铁料和石灰消耗也都有明显改善，增加废钢用量，所取得的经济效益达到40.02元/t。转炉炼钢工艺达到生产低碳优质深冲钢所需的技术水平。

关键词: 转炉炼钢, 脱磷率, 氧含量, 终点温度, 工艺优化

Abstract: In order to solve the problems of low dephosphorization rate in the early stage of steelmaking，high oxygen content at the end-point of blowing，low tapping temperature and short life of oxygen lance in 260 t converter in Hanbao Steelwork, Handan Iron and Steel Company，a series of investigations were carried out during the steelmaking process through sampling，temperature measurement，recording and analyzing key operating parameters. According to the investigation results，the parameters of oxygen lance nozzle and the curve of lance position during blowing were optimized，and the maintenance of bottom tuyeres was strengthened. The pressure loss in the oxygen supply pipeline and the characteristics of the jet flow field of the nozzle were measured，and the water model test of the effect of the jet on the converter bath was carried out.Through the above process optimization measures，the dephosphorization result of the converter has been improved，the end-point carbon and oxygen content product in the molten steel has been reduced to 0.002 39，the average tapping temperature has reached 1645℃，and the average lance life has been doubled to 320 heats. The consumption of other materials such as ferrous charge and lime has also been improved significantly，the amount of scrap has been increased and the economic benefit achieved has reached 40.02 yuan/t. The converter steelmaking process reached the technical level required to produce low-carbon high-quality deep drawing steel.

Key words: converter steelmaking, the ratio of dephosphorization, oxygen content, end-point temperature, process optimozation

何顺生1，杨文远2，李任春1，王明林3，唐文明1，冯超2. 邯宝大型转炉炼钢工艺优化的研究[J]. 炼钢.

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