摘要
通过提高转炉出钢温度（Q235A／Q235B钢1660～1670℃，Q345A／Q345B钢1665～1675℃，终点[C]I〉0．06％，终点[P]≤0．025％），强化钢包周转管理，出钢过程减少下渣量、加炉渣改质剂或脱硫剂提前造渣脱硫和精确计算合金加入量，控制钢包底吹氩流量防止二次氧化和卷渣等工艺措施，使150tLFQ235B和Q345B钢平均送电时间分别从8．10min和9．39min降至2．60min和3．13min，平均电耗分别从17．33kWh／t和20．09kWh／t降至5．55kwh／t和6．69kWh／t，平均LF精炼时间分别从40min和42min降至20．1rain和22．4min，各项精炼指标均达到要求，取得了较好的经济效益。
With the process measures including increasing temperature of liquid in BOF tapping （ steel Q235A/Q35B 1 660 - 1 670℃, steel Q345A/Q345B 1 665 - 1 675℃, end [ CI ≥0. 06% , end [P] ≤0. 025% ）, intensifying ladle turnover administration, reducing down slag amount, adding modifier or desulphurizing agent for slagging and desulphuriza- tion in advance and aceuretely calculating alloys addition during tapping, and controlling ladle bottom argon blowing rate to protect reoxidation of liquid and slag entrapment, the average power on time for refining steel Q235B and steel Q345B in 150 t LF decreases respectively from 8. 10 min and 9.39 min to 2. 60 min and 3. 13 min, the average electric power con- sumption reduces respectively from 17.33 kW1Ct and 20. 09 kWlCt to 5.55 kWh/t and 6. 69 kWh/t, and the average LF refining time decreases respectively from 40 rain and 42 min to 20. 1 min and 22.4 min, all refining indexes are all meet the requirement with getting better economic performance.
出处
《特殊钢》
北大核心
2014年第1期33-35,共3页
Special Steel
关键词
150
t
LF
精炼
电耗
生产实践
150 t LF, Refining, Electric Power Consumption, Practice of Production
