Article(id=1202256137073680582, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1202256135920246978, articleNumber=1009-5438(2025)05-0035-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1752163200000, receivedDateStr=2025-07-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1764569799917, onlineDateStr=2025-12-01, pubDate=1761321600000, pubDateStr=2025-10-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764569799917, onlineIssueDateStr=2025-12-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764569799917, creator=13701087609, updateTime=1764569799917, updator=13701087609, issue=Issue{id=1202256135920246978, tenantId=1146029695717560320, journalId=1185652524569653253, year='2025', volume='51', issue='5', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764569799642, creator=13701087609, updateTime=1764570051432, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1202257192083747509, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1202256135920246978, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1202257192083747510, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1202256135920246978, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=35, endPage=38, ext={EN=ArticleExt(id=1202256137300173001, articleId=1202256137073680582, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Application Practices of Optimizing Slag Formation Process and Alloying before VD, columnId=1187100781414069182, journalTitle=Science & Technology of Baotou Steel, columnName=Production Practices and Management, runingTitle=null, highlight=null, articleAbstract=
The alloying before VD (vacuum degassing) process is developed by optimizing slag formation process and deoxidation system of LF (ladle furnace) as well as the alloying operation after VD is changed to before VD process aiming at such problems as fluctuation of composition of molten steel, excessive inclusions and long production time caused by lagged alloying operation after VD in the vacuum treatment process of aluminium killed steel. The application practices showed that the holding time of white slag was extended to 15~20 min, total oxygen content of molten steel after VD was reduced to 0.001 2%~0.002 0%, rating of fine B class inclusion (Al2O3) was decreased from grade 2.0 to grade 1.0 and power consumption of refining was reduced to 48.51 kWh/t.
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针对铝镇静钢真空处理工序中VD后合金化操作滞后导致的钢水成分波动、夹杂物超标及生产时序长等问题,通过优化LF炉造渣工艺与脱氧制度,将VD后合金化操作前置于VD工序,开发了VD工序合金化前置工艺。应用实践表明,新工艺使白渣保持时间延长至15~20 min,VD后钢水全氧含量降低至0.001 2%~0.002 0%,B类夹杂物(Al2O3)细系评级由2.0级降至1.0级,精炼电耗降低至48.51 kWh/t。
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梁光生(1973-),男,内蒙古包头市人,高级技师,现从事炉外精炼工作。
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梁光生(1973-),男,内蒙古包头市人,高级技师,现从事炉外精炼工作。
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梁光生(1973-),男,内蒙古包头市人,高级技师,现从事炉外精炼工作。
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articleId=1202256137073680582, language=CN, orderNo=4, keyword=夹杂物)], refs=[Reference(id=1202266697857196032, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, doi=null, pmid=null, pmcid=null, year=2018, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=王新华, journalName=钢精炼过程夹杂物控制, refType=null, unstructuredReference=王新华.
钢精炼过程夹杂物控制[M]. 北京: 冶金工业出版社,
2018., articleTitle=null, refAbstract=null), Reference(id=1202266697987219460, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, doi=null, pmid=null, pmcid=null, year=2020, volume=36, issue=3, pageStart=45, pageEnd=49, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=李晶, journalName=炼钢, refType=null, unstructuredReference=李晶. LF-VD精炼工艺优化研究[J].
炼钢,
2020,
36(3):45-49., articleTitle=LF-VD精炼工艺优化研究, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1202266691674792705, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, xref=null, ext=[AuthorCompanyExt(id=1202266691683181316, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, companyId=1202266691674792705, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Steel Pipe Branch Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1202266691691569925, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, companyId=1202266691674792705, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=内蒙古包钢钢联股份有限公司钢管分公司,内蒙古 包头 014010)])], figs=[ArticleFig(id=1202266695181231016, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 新工艺 | 传统工艺 |
| 白渣成渣时间/min | 15~20 | 30~35 |
| 白渣保持时间/min | 10~20 | 6~10 |
| 调渣操作 | 钢水就位 | 第一次加热后 |
| 精炼离位温度/℃ | 液相线+(85~95) | 液相线+(95~105) |
), ArticleFig(id=1202266695265117104, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, language=CN, label=表1, caption=
精炼炉操作对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 新工艺 | 传统工艺 |
| 白渣成渣时间/min | 15~20 | 30~35 |
| 白渣保持时间/min | 10~20 | 6~10 |
| 调渣操作 | 钢水就位 | 第一次加热后 |
| 精炼离位温度/℃ | 液相线+(85~95) | 液相线+(95~105) |
), ArticleFig(id=1202266695378363319, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶段 | 时间/min | 流量范围/(L·min-1) | 主要目的 |
| 破顶阶段 | 0.1~0.2 | 500~600 | 利用高压力、大流量氩气搅拌钢液,顶破渣壳 |
| 取样阶段 | 1~2 | 30~60 | 均匀钢水成分和温度,弱吹便于测温取样 |
| 造渣阶段 | 3~6 | 100~260 | 快速形成具有较高碱度和较低氧化性的精炼渣 |
| 提温阶段 | 10~20 | 150~300 | 根据钢水就位温度、各种热损失及升温速率等综合考虑,满足钢种离位温度要求 |
| 脱硫阶段 | 2~5 | 400~500 | 采用强搅拌促进硫元素由钢液向钢-渣界面迁移,发生化学反应,生成硫化物向渣层迁移 |
| 微调阶段 | 1~3 | 150~200 | 根据钢水就位成分进行合金微调,满足钢种要求 |
| VD阶段 | 13~15 | 100~150 | 采用大流量,提高VD冶炼效果 |
| 软吹阶段 | 8~13 | 40~90 | 均匀钢水温度、成分,并促进气体及夹杂物上浮 |
), ArticleFig(id=1202266695495803837, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, language=CN, label=表2, caption=
氩气流量控制参数标准
, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶段 | 时间/min | 流量范围/(L·min-1) | 主要目的 |
| 破顶阶段 | 0.1~0.2 | 500~600 | 利用高压力、大流量氩气搅拌钢液,顶破渣壳 |
| 取样阶段 | 1~2 | 30~60 | 均匀钢水成分和温度,弱吹便于测温取样 |
| 造渣阶段 | 3~6 | 100~260 | 快速形成具有较高碱度和较低氧化性的精炼渣 |
| 提温阶段 | 10~20 | 150~300 | 根据钢水就位温度、各种热损失及升温速率等综合考虑,满足钢种离位温度要求 |
| 脱硫阶段 | 2~5 | 400~500 | 采用强搅拌促进硫元素由钢液向钢-渣界面迁移,发生化学反应,生成硫化物向渣层迁移 |
| 微调阶段 | 1~3 | 150~200 | 根据钢水就位成分进行合金微调,满足钢种要求 |
| VD阶段 | 13~15 | 100~150 | 采用大流量,提高VD冶炼效果 |
| 软吹阶段 | 8~13 | 40~90 | 均匀钢水温度、成分,并促进气体及夹杂物上浮 |
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| 项目 | 新工艺 | 传统工艺 |
| 氢含量 | 0.001 5~0.002 0 | 0.002 0~0.002 5 |
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脱氢效果对比 %
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| 项目 | 新工艺 | 传统工艺 |
| 氢含量 | 0.001 5~0.002 0 | 0.002 0~0.002 5 |
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| 项目 | 新工艺 | 传统工艺 |
| VD前 | 0.002 0~0.002 8 | 0.002 8~0.003 4 |
| VD后 | 0.001 2~0.002 0 | 0.002 0~0.002 8 |
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精炼操作全氧含量对比 %
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| 项目 | 新工艺 | 传统工艺 |
| VD前 | 0.002 0~0.002 8 | 0.002 8~0.003 4 |
| VD后 | 0.001 2~0.002 0 | 0.002 0~0.002 8 |
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| 钢种 | 损铝量 | 损钛量 |
| 低碳钢 | 0.010~0.016 | 0.005~0.009 |
| 中碳钢 | 0.008~0.013 | 0.003~0.008 |
| 高碳钢 | 0.006~0.011 | 0.002~0.006 |
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VD处理过程中损铝量和损钛量 %
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| 钢种 | 损铝量 | 损钛量 |
| 低碳钢 | 0.010~0.016 | 0.005~0.009 |
| 中碳钢 | 0.008~0.013 | 0.003~0.008 |
| 高碳钢 | 0.006~0.011 | 0.002~0.006 |
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| 熔炼号 | A | | B | | C | | D | Ds |
| 粗 | 细 | 粗 | 细 | 粗 | 细 | 粗 | 细 |
| 700213 | 0 | 0 | | 0 | 2.5 | | 0 | 0 | | 0 | 1.5 | 0 |
| 700214 | 0 | 0 | | 0 | 2.0 | | 0 | 0 | | 0 | 1.5 | 0 |
| 600237 | 0 | 0 | | 0 | 2.5 | | 0 | 0 | | 0 | 2.0 | 0 |
| 700501 | 0 | 0 | | 0 | 2.0 | | 0 | 0 | | 0 | 1.5 | 0 |
| 700502 | 0 | 0 | | 0 | 2.0 | | 0 | 0 | | 0 | 2.0 | 0 |
), ArticleFig(id=1202266696351441897, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, language=CN, label=表6, caption=
传统工艺铸坯夹杂物检验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 熔炼号 | A | | B | | C | | D | Ds |
| 粗 | 细 | 粗 | 细 | 粗 | 细 | 粗 | 细 |
| 700213 | 0 | 0 | | 0 | 2.5 | | 0 | 0 | | 0 | 1.5 | 0 |
| 700214 | 0 | 0 | | 0 | 2.0 | | 0 | 0 | | 0 | 1.5 | 0 |
| 600237 | 0 | 0 | | 0 | 2.5 | | 0 | 0 | | 0 | 2.0 | 0 |
| 700501 | 0 | 0 | | 0 | 2.0 | | 0 | 0 | | 0 | 1.5 | 0 |
| 700502 | 0 | 0 | | 0 | 2.0 | | 0 | 0 | | 0 | 2.0 | 0 |
), ArticleFig(id=1202266696435327981, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 熔炼号 | A | | B | | C | | D | Ds |
| 粗 | 细 | 粗 | 细 | 粗 | 细 | 粗 | 细 |
| 706860 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0.5 | 0 |
| 706862 | 0 | 0 | | 0 | 1 | | 0 | 0 | | 0 | 0.5 | 0 |
| 706863 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0 | 0 |
| 706864 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0.5 | 0 |
| 706865 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0.5 | 0 |
), ArticleFig(id=1202266697622316021, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1202256137073680582, language=CN, label=表7, caption=
新工艺铸坯夹杂物检验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 熔炼号 | A | | B | | C | | D | Ds |
| 粗 | 细 | 粗 | 细 | 粗 | 细 | 粗 | 细 |
| 706860 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0.5 | 0 |
| 706862 | 0 | 0 | | 0 | 1 | | 0 | 0 | | 0 | 0.5 | 0 |
| 706863 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0 | 0 |
| 706864 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0.5 | 0 |
| 706865 | 0 | 0 | | 0 | 0.5 | | 0 | 0 | | 0 | 0.5 | 0 |
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