X52抗硫管线钢冶炼工艺优化

摘要/Abstract

摘要： 抗硫管线钢生产过程中存在碳、硫、磷元素控制困难，钢铁料消耗高等问题，结合生产数据和热力学计算对其原因进行了分析，并从电弧炉熔炼、合金化、电弧炉出钢预精炼、LF精炼渣系和渣料加入制度等方面提出了改善措施。采用优化的工艺后，电弧炉出钢过程增磷质量分数从32.3×10^-6降低至6.6×10^-6；增碳质量分数从0.038 %降低至0.011 %；脱硫率从27.0 %提高到44.1 %，LF精炼过程的脱硫率从84.1 %提高到89.5 %；钢铁料消耗从1 130 kg/t降为1 070 kg/t，石灰消耗从85.4 kg/t降为33.1 kg/t，铝锭消耗从2.6 kg/t降为2.1 kg/t，氧气消耗从35.1 m³/t降为24.4 m³/t，电耗从445.8 kWh/t降为422.1 kWh/t，生产成本显著降低；LF精炼出站钢液的洁净度明显提高，显微夹杂物面积比降低了29.3 %。

关键词: 抗硫管线钢, 冶炼工艺, 精炼渣, 钢铁料消耗, 夹杂物

Abstract: There are some issues in the production of sour service pipeline steel, which includes being hard to control carbon, sulfur, phosphorous; high ferrous charge consumption. The root cause was analyzed by thermodynamic calculation combined with production data. The countermeasure was put forward from EAF melting, alloying mechanism, prerefining at EAF tapping, LF refining slag and raw material addition mechanism. After the optimized process was applied, at EAF tapping rephosphorization fraction decreased from 32.3×10^-6 to 6.6×10^-6，carburization fraction decreased from 0.038 % to 0.011 %，desulphurization ratio increased from 27.0 % to 44.1 %; desulphurization ratio in the LF process increased from 84.1 % to 89.5 %, ferrous charge consumption decreased from 1 130 kg/t to 1 070 kg/t, lime consumption decreased from 85.4 kg/t to 33.1 kg/t, aluminum consumption decreased from 2.6 kg/t to 2.1 kg/t, oxygen consumption decreased from 35.1 m³/t to 24.4 m³/t, electricity consumption decreased from 445.8 kWh/t to 422.1 kWh/t, and hence the production cost decreased significantly; the cleanness of liquid steel improved dramatically at LF end, the area ratio of micro inclusion decreased by 29.3 %.

Key words: sour service pipeline steel, steelmaking process, refining slag, ferrous charge consumption, inclusion

邓叙燕1,2，胡楚江1,2，冯传宁1,2. X52抗硫管线钢冶炼工艺优化[J]. 炼钢, 2017, 33(2): 57-62.

[1]	王举金1，孔祥玉2，孟润泽2，张旭辉2，任英1. Q195热轧带钢脱氧过程非金属夹杂物生成热力学及工业实践[J]. 炼钢, 2020, 36(3): 13-20.
[2]	张建元1，季莎2，张立峰3，陆晓雷1，陈威2，张海礼1. 20CrMnTiH齿轮钢脱氧过程中非金属夹杂物生成热力学及工业实践[J]. 炼钢, 2020, 36(3): 21-26.
[3]	万文1，马德刚2，李经哲2，马旭朝3. 冷轧薄板超低碳钢精炼双联工艺研究及应用[J]. 炼钢, 2020, 36(3): 27-31.
[4]	张国锋1，季莎2，张立峰3，王亚栋2，李彩云1，张威1，罗艳2. 20CrMnTiH齿轮钢凝固和冷却过程中非金属夹杂物的转变研究[J]. 炼钢, 2020, 36(3): 32-38.
[5]	夏兆东1，邓丽琴1，王德永2. 梅钢250t钢包浇铸过程旋涡卷渣行为研究[J]. 炼钢, 2020, 36(3): 44-50.
[6]	安会龙1，任英2*，刘洋2，储焰平2，张彦辉2. 弹簧钢中夹杂物生成热力学[J]. 炼钢, 2020, 36(3): 55-61.
[7]	齐广，王福明，沈伟. 低飞溅气保焊丝钢ER70S-6夹杂物的塑性化控制[J]. 炼钢, 2020, 36(3): 62-67.
[8]	赵晓磊1，成功2，杨华峰1，刘丽娟1，任英2. GCr15轴承钢脱氧过程中非金属夹杂物生成热力学及工业实践 [J]. 炼钢, 2020, 36(2): 22-28.
[9]	王祎,张立峰2，杨文1，雷勋惠1，张继1，赵根安1. Q345钢液凝固及铸坯冷却过程中非金属夹杂物的组成演变[J]. 炼钢, 2020, 36(2): 29-33.
[10]	徐佳林1,2,3，陆海飞1,2,3，田伟光1,2,3，蒋发立2,3. 304不锈钢冷轧板线鳞缺陷改进实践[J]. 炼钢, 2020, 36(2): 70-75.
[11]	屈志东，谢有，孟晓玲，徐建飞，王昆鹏. 高品质轴承钢BOF-LF-RH-CC和EAF-LF-VD-CC工艺夹杂物演变规律[J]. 炼钢, 2020, 36(2): 76-80.
[12]	王建忠1,程礼梅2,任英2,赵晓锋1,李慧峰1,王举金2. 含硫齿轮钢脱氧过程中非金属夹杂物生成热力学及工业实践 [J]. 炼钢, 2020, 36(1): 8-14.
[13]	张明海1，程礼梅2，杨文2，李学科1，于春强1，牛凯军2. 含硫齿轮钢凝固冷却过程中非金属夹杂物的转变研究 [J]. 炼钢, 2020, 36(1): 21-26.
[14]	薛永栋1,2，张威风2，辛雪倩2，李春辉2，杨金安2. 50Cr5MoV支承辊用钢氧和夹杂物控制实践[J]. 炼钢, 2020, 36(1): 67-72.
[15]	刘风刚1,2，任英1，段豪剑1，张立峰1. 钢包软吹过程优化数学模拟和工业试验研究[J]. 炼钢, 2019, 35(6): 24-30.

X52抗硫管线钢冶炼工艺优化

Process optimization of X52 sour service pipeline steel

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价