Article(id=1187027205029773544, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187027204178326004, articleNumber=1009-5438(2024)06-0039-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1709568000000, receivedDateStr=2024-03-05, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1760938939578, onlineDateStr=2025-10-20, pubDate=1735056000000, pubDateStr=2024-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1760938939578, onlineIssueDateStr=2025-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1760938939578, creator=13701087609, updateTime=1760938939578, updator=13701087609, issue=Issue{id=1187027204178326004, tenantId=1146029695717560320, journalId=1185652524569653253, year='2024', volume='50', issue='6', 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=1760938939375, creator=13701087609, updateTime=1760939191531, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1187028261868548309, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187027204178326004, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187028261868548310, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187027204178326004, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=39, endPage=43, ext={EN=ArticleExt(id=1187100785973277639, articleId=1187027205029773544, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Process Optimization of Dynamic Control for Bottom Blowing System of 150 t Converter, columnId=1187100781414069182, journalTitle=Science & Technology of Baotou Steel, columnName=Production Practices and Management, runingTitle=null, highlight=null, articleAbstract=
The methods of manual dynamic regulation of bottom blowing of converter with steel grade of smelting and dynamic maintenance of furnace profile are proposed aiming at such problems as low gas supply intensity of bottom blowing, short service life of breathable element for bottom blowing and lower combined blowing rate for 150 t top bottom combined blowing converter in Steel-making Plant. Different gas supply intensity models are established and gas supply intensity of bottom blowing is optimized based on the requirements for end point carbon content of steel grade in actual production. As a result, the dynamic control of gas supply intensity of bottom blowing for smelting different steel grades is realized, iron oxide content of final slag of converter and end point product of carbon concentration and oxygen concentration are effectively reduced as well as metallurgical effects of bottom blowing system and quality of molten steel are improved.
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针对炼钢厂150 t顶底复吹转炉底吹供气强度低、底吹透气元件使用寿命短、复吹率偏低等问题,提出转炉底吹随冶炼钢种人工动态调节以及炉型动态维护的方法。根据实际生产钢种终点碳含量要求,建立不同模式底吹供气强度模型,优化底吹供气强度,实现冶炼不同钢种底吹供气强度的动态控制,有效降低了转炉终渣氧化铁含量,降低终点碳氧积,改善了底吹系统的冶金效果,提高了钢水质量。
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付海东(1989-),男,内蒙古呼和浩特市人,工程师,现从事炼钢工艺研究工作。
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付海东(1989-),男,内蒙古呼和浩特市人,工程师,现从事炼钢工艺研究工作。
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付海东(1989-),男,内蒙古呼和浩特市人,工程师,现从事炼钢工艺研究工作。
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| 阶段 | 低碳钢 供气强度 | 中碳钢 供气强度 | 高碳钢 供气强度 |
| 前期 | 0.070 | 0.070 | 0.070 |
| 中期 | 0.046 | 0.046 | 0.046 |
| 末期 | 0.070 | 0.070 | 0.060 |
| 拉碳后搅 | 0.050 | 0.050 | 0.050 |
| 过程待吹 | 0.050 |
| 溅渣 | 0.100 |
| 待生产 | 0.005 |
), ArticleFig(id=1187100931318493606, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205029773544, language=CN, label=表1, caption=
150 t转炉底吹模式 m3/(t·min)
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| 阶段 | 低碳钢 供气强度 | 中碳钢 供气强度 | 高碳钢 供气强度 |
| 前期 | 0.070 | 0.070 | 0.070 |
| 中期 | 0.046 | 0.046 | 0.046 |
| 末期 | 0.070 | 0.070 | 0.060 |
| 拉碳后搅 | 0.050 | 0.050 | 0.050 |
| 过程待吹 | 0.050 |
| 溅渣 | 0.100 |
| 待生产 | 0.005 |
), ArticleFig(id=1187100931389796776, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205029773544, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
供气 模式 | 吹炼 一期 | 吹炼 二期 | 吹炼 三期 | 吹炼 四期 | 后搅 | 取样 | 后吹 | 开始 出钢 | 结束 出钢 | 溅渣 护炉 | 等样 |
| 低强度模式 | 0.069 | 0.048 | 0.052 | 0.060 | 0.084 | 0.021 | 0.063 | 0.021 | 0.021 | 0.024 | 0.021 |
| 中强度模式 | 0.059 | 0.045 | 0.050 | 0.055 | 0.074 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
| 高强度模式 | 0.055 | 0.043 | 0.048 | 0.053 | 0.064 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
| 高碳钢模式 | 0.059 | 0.043 | 0.037 | 0.043 | 0.064 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
| 低碳钢模式 | 0.069 | 0.048 | 0.043 | 0.053 | 0.074 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
), ArticleFig(id=1187100931452711338, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205029773544, language=CN, label=表2, caption=
不同底吹模式底吹供气强度表 m3/(t·min)
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供气 模式 | 吹炼 一期 | 吹炼 二期 | 吹炼 三期 | 吹炼 四期 | 后搅 | 取样 | 后吹 | 开始 出钢 | 结束 出钢 | 溅渣 护炉 | 等样 |
| 低强度模式 | 0.069 | 0.048 | 0.052 | 0.060 | 0.084 | 0.021 | 0.063 | 0.021 | 0.021 | 0.024 | 0.021 |
| 中强度模式 | 0.059 | 0.045 | 0.050 | 0.055 | 0.074 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
| 高强度模式 | 0.055 | 0.043 | 0.048 | 0.053 | 0.064 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
| 高碳钢模式 | 0.059 | 0.043 | 0.037 | 0.043 | 0.064 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
| 低碳钢模式 | 0.069 | 0.048 | 0.043 | 0.053 | 0.074 | 0.021 | 0.053 | 0.021 | 0.021 | 0.024 | 0.021 |
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