Article(id=1198267806300079104, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198267803028521972, articleNumber=1009-5438(2023)01-0036-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1666281600000, receivedDateStr=2022-10-21, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763618907761, onlineDateStr=2025-11-20, pubDate=1677254400000, pubDateStr=2023-02-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763618907761, onlineIssueDateStr=2025-11-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763618907761, creator=13701087609, updateTime=1763618907761, updator=13701087609, issue=Issue{id=1198267803028521972, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='1', 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=1763618906981, creator=13701087609, updateTime=1763619307448, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1198269482767581847, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198267803028521972, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1198269482771776152, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198267803028521972, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=36, endPage=40, ext={EN=ArticleExt(id=1198267806618845185, articleId=1198267806300079104, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Discussions on Technologies for Recycling Fly Ash of Sintering Machine Head and Blast Furnace Bag, columnId=1187100781414069182, journalTitle=Science & Technology of Baotou Steel, columnName=Production Practices and Management, runingTitle=null, highlight=null, articleAbstract=
In the paper, the restraining factors affecting recycling fly ash of sintering machine head and blast furnace bag are discussed as well as the key technologies of extracting such valuable elements as Zn, K and Na from the fly ash are studied by analyzing its characteristics and disposal status. The technical plans for comprehensive utilization of fly ash of sintering machine head with high alkali metal content as well as fly ash of blast furnace bag with high zinc and alkali metal contents are proposed combining with such cases as salt extraction technology by washing for fly ash with high alkali metal content, zinc extraction technology with pyrogenic and wet processes for fly ash with high zinc content and reduction technology of electric arc furnace for iron-bearing dust as well as evaluating their merits and demerits. After implement the plans, the disposed fly ash could be recycled for sintering as well as products of Zn, K and Na could be sold externally so that the economic benefits are considerable and the problems of land occupation and environmental pollutions could be solved.
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通过对烧结机头除尘灰、高炉布袋除尘灰特性及处置现状分析,探讨影响该类除尘灰回用的制约因素,研究从除尘灰中提取Zn、K、Na等有价元素的关键技术。结合现有高碱金属含量除尘灰水洗提盐、高锌含量除尘灰火法、湿法提锌、含铁尘泥电弧炉还原技术案例,评估其优缺点,提出针对高碱金属含量烧结机头除尘灰、高锌金属、高碱金属含量高炉布袋除尘灰综合利用技术方案,方案实施后经处理的除尘灰可回用于烧结,生产的Zn、K、Na产品可对外销售,在产生可观的经济效益的同时解决了土地占用、环境污染问题。
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田 颖(1971-),男,内蒙古包头市人,硕士,正高级工程师,注册环境影响评价工程师,现从事环境污染治理及环境影响评价工作。
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田 颖(1971-),男,内蒙古包头市人,硕士,正高级工程师,注册环境影响评价工程师,现从事环境污染治理及环境影响评价工作。
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田 颖(1971-),男,内蒙古包头市人,硕士,正高级工程师,注册环境影响评价工程师,现从事环境污染治理及环境影响评价工作。
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| 物料名称 | TFe | CaO | MgO | K2O | Na2O | C | Zn |
| 烧结机头灰 | 41.0 | 5.00 | 1.00 | 8.45 | 0.65 | 1.73 | 0.05 |
| 高炉布袋灰 | 26.0 | 4.24 | 1.04 | 11.00 | 4.00 | 24.00 | 6.00 |
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烧结机头灰、高炉布袋灰主要化学成分(质量分数)%
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| 物料名称 | TFe | CaO | MgO | K2O | Na2O | C | Zn |
| 烧结机头灰 | 41.0 | 5.00 | 1.00 | 8.45 | 0.65 | 1.73 | 0.05 |
| 高炉布袋灰 | 26.0 | 4.24 | 1.04 | 11.00 | 4.00 | 24.00 | 6.00 |
), ArticleFig(id=1198267953528537329, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267806300079104, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 回转窑及水洗技术除尘灰资源化 综合利用方案 | 转底炉及水洗技术除尘灰资源化 综合利用方案 | 电弧炉除尘灰资源化 综合利用方案 |
| 工艺成熟度 | 非常成熟 | 成熟 | 基本成熟 |
| 占地面积 | 较大 | 大 | 一般 |
| 维护 | 检修工作量大 | 比较繁琐,检修工作量大 | 相对简单 |
| 投资 | 约5 500万元 | 约40 000万元 | 约8 000万元 |
| 吨原料投资成本 | 550元 | 1 600元 | 567元 |
| 工艺成本 | 较低 | 高 | 较高 |
| 原料适用性 | 要求高碳、高锌除尘灰、高炉布袋灰 | 原料含碳一般在14%~16%即可,锌无严格要求。高炉布袋灰、出铁场除尘灰、转炉二次灰、转炉EP灰 | 适用于各类含铁尘泥。高炉布袋灰、烧结机头灰、转炉一次除尘灰(干法)、转炉二次除尘灰、氧化铁红粉 |
| 锌脱除率 | ≥90% | ≥90% | ≥95% |
| 设计容量 | 10万t/a | 25万t/a | 15万t/a |
| 产品金属化率 | 65%以上 | 70%~85% | 95% |
| 产品 | KCl、机头灰水洗渣、粗锌粉、 铁精粉/还原铁粉 | KCl、机头灰水洗渣、 粗锌粉、金属化球团 | 粗锌粉、生铁、粒化渣 |
), ArticleFig(id=1198267953616617714, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267806300079104, language=CN, label=表2, caption=
回转窑、转底炉、电弧炉三种除尘灰综合利用方案比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 回转窑及水洗技术除尘灰资源化 综合利用方案 | 转底炉及水洗技术除尘灰资源化 综合利用方案 | 电弧炉除尘灰资源化 综合利用方案 |
| 工艺成熟度 | 非常成熟 | 成熟 | 基本成熟 |
| 占地面积 | 较大 | 大 | 一般 |
| 维护 | 检修工作量大 | 比较繁琐,检修工作量大 | 相对简单 |
| 投资 | 约5 500万元 | 约40 000万元 | 约8 000万元 |
| 吨原料投资成本 | 550元 | 1 600元 | 567元 |
| 工艺成本 | 较低 | 高 | 较高 |
| 原料适用性 | 要求高碳、高锌除尘灰、高炉布袋灰 | 原料含碳一般在14%~16%即可,锌无严格要求。高炉布袋灰、出铁场除尘灰、转炉二次灰、转炉EP灰 | 适用于各类含铁尘泥。高炉布袋灰、烧结机头灰、转炉一次除尘灰(干法)、转炉二次除尘灰、氧化铁红粉 |
| 锌脱除率 | ≥90% | ≥90% | ≥95% |
| 设计容量 | 10万t/a | 25万t/a | 15万t/a |
| 产品金属化率 | 65%以上 | 70%~85% | 95% |
| 产品 | KCl、机头灰水洗渣、粗锌粉、 铁精粉/还原铁粉 | KCl、机头灰水洗渣、 粗锌粉、金属化球团 | 粗锌粉、生铁、粒化渣 |
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