李超,硕士,高级工程师,2011年7月毕业于东北大学钢铁冶金专业。E-mail:xx_20200430@163.com.260t转炉生产SPA-H钢保磷技术研究与实践李超1,于海岐1,黄岩1,许营2,尚德义1,李文博1,冉茂铎1(1.鞍钢股份有限公司鲅鱼圈钢铁分公司,辽宁营口115007;2.鞍钢集团钢铁研究院,辽宁鞍山114009)摘要:针对SPA-H钢种磷含量要求高的特点进行了保磷理论分析,并开展试验,确定影响钢水磷含量各主要参数最佳平均值为:终点钢水温度1681℃,渣重量7.38t,氧含量0.0382%,终渣碱度1.68。实践表明,SPA-H钢磷含量合格率100%,平均为0.0773%,完全满足生产要求。关键词:转炉;SPA-H钢种;磷含量;钢水温度;氧含量;碱度;渣量中图分类号:TF777文献标识码:A文章编号:1006-4613(2023)01-0055-04DOI:10.3969/j.issn.1006-4613.2023.01.0012StudyonPhosphorus-preservingTechnologyforMakingMoltenSteelSPA-Hby260tConverterandItsPracticeLIChao1,YUHaiqi1,HUANGYan1,XUYing2,SHANGDeyi1,LIWenbo1,RANMaoduo1(1.BayuquanBranchofAngangSteelCo.,Ltd.,Yingkou115007,Liaoning,China;2.AnsteelIron&SteelResearchInstitutes,Anshan114009,Liaoning,China)Abstract:AccordingtothecharacteristicofhighcontentofphosphorusaskedformakingmoltensteelSPA-H,thetheoreticalanalysisonthephosphorus-preservingtechnologywascarriedoutandthenexperimentalinvestigationsweredone.Basedontheinvestigationstheoptimumaveragevaluesconcerningthemainparameterseffectingthecontentofphosphorusinmoltensteelweredetermined,namelythetemperatureofmoltensteelattheendpointwas1681℃,theslagvolumewas7.38tons,thecontentofoxygenwas0.0382%andthealkalinityoffinalslagwas1.68.Sothepracticeresultsshowedthatthequalifiedrateofphosphoruscontentwas100%,fortheaveragephosphoruscontentwas0.0773%,whichcouldcompeletlymeettherequirementsaskedbymoltensteelSPA-H.Keywords:converter;SPA-Hsteelgrade;phosphoruscontent;moltensteeltemperature;oxygencontent;alkalinity;slagvolume耐候钢被广泛应用于集装箱板、桥梁等,其使用环境对钢的耐腐蚀性、屈服强度等均有较高要求,国内酒钢、马钢、莱钢、鞍钢等钢铁企业通过研究冶炼钢水成分控制、轧制工艺等,使纯净度、屈服强度、抗拉强度、延伸率等指标均得到改善[1-7]。SPA-H钢是耐...