Article(id=1187027204799082998, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187027204178326004, articleNumber=1009-5438(2024)06-0017-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1707062400000, receivedDateStr=2024-02-05, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1760938939523, onlineDateStr=2025-10-20, pubDate=1735056000000, pubDateStr=2024-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1760938939523, onlineIssueDateStr=2025-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1760938939523, creator=13701087609, updateTime=1760938939523, 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=17, endPage=20, ext={EN=ArticleExt(id=1187100782680752495, articleId=1187027204799082998, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Improvement of Flotation Process for Magnetic Iron Ore of Bayan Obo, columnId=1187100781414069182, journalTitle=Science & Technology of Baotou Steel, columnName=Production Practices and Management, runingTitle=null, highlight=null, articleAbstract=
The flotation process is the main method for removing impurity element fluorine in magnetic iron ore of Bayan Obo. The indicators and productivity of flotation operation can be effectively improved by reasonably selecting process flow of flotation. The existing flotation process is analyzed aiming at such problems as high iron grade and low productivity of flotation tailings as well as high consumption of reagent for flotation operation of magnetic iron ore of Bayan Obo. It is found that the gap between iron grades of foam in the first and second stages of rougher flotation is great, the iron grade of foam in the first stage is lower than that of flotation tailings, and then it is mixed with foam in the second stage to enter operation of scavenging so that the iron grade of flotation tailings is high and productivity of flotation is low. The foam in the first stage of roughing for flotation is directly with discarding tailings and conditions of flotation operation are reoptimized. In actual production, the iron grade of flotation tailings is decreased by 5.34 percentage points and productivity of flotation concentrate is increased by 6.16 percentage points after improving the process.
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浮选工艺是去除白云鄂博磁铁矿中杂质氟的主要方法,合理选择浮选工艺流程可以有效改善浮选作业指标,提高浮选产率。针对白云鄂博磁铁矿浮选作业浮尾铁品位高、产率低、药剂消耗高等问题,对现有浮选工艺进行分析,发现粗选一、二段泡沫铁品位差距大,一段泡沫铁品位已低于浮选尾矿的铁品位,再与二段泡沫混合进入扫选作业,造成浮选尾矿铁品位高,浮选产率低。将浮选的粗选一段泡沫直接抛尾,重新优化浮选作业条件。工艺改进后,在实际生产中,浮选尾矿铁品位降低了5.34个百分点,浮选精矿产率提高了6.16个百分点。
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刘学成(1987-),男,内蒙古乌兰察布市人,高级工程师,现从事选矿科研与生产工作。
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| 名称 | 铁品位 | F含量 |
| 磁选精矿 | 59.80 | 2.38 |
| 粗选一段沉砂 | 63.30 | 1.03 |
| 粗选一段泡沫 | 31.40 | 8.20 |
| 粗选二段泡沫 | 50.40 | 4.20 |
| 一次扫选沉砂 | 52.60 | 3.00 |
| 一次扫选泡沫 | 39.90 | 6.00 |
| 二次扫选沉砂 | 43.20 | 4.00 |
| 浮选精矿 | 67.30 | 0.42 |
| 浮选尾矿 | 39.40 | 8.00 |
), ArticleFig(id=1187100904282014374, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027204799082998, language=CN, label=表1, caption=
浮选工艺指标(质量分数) %
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| 名称 | 铁品位 | F含量 |
| 磁选精矿 | 59.80 | 2.38 |
| 粗选一段沉砂 | 63.30 | 1.03 |
| 粗选一段泡沫 | 31.40 | 8.20 |
| 粗选二段泡沫 | 50.40 | 4.20 |
| 一次扫选沉砂 | 52.60 | 3.00 |
| 一次扫选泡沫 | 39.90 | 6.00 |
| 二次扫选沉砂 | 43.20 | 4.00 |
| 浮选精矿 | 67.30 | 0.42 |
| 浮选尾矿 | 39.40 | 8.00 |
), ArticleFig(id=1187100904353317544, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027204799082998, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 铁品位 | F含量 |
| 粗选二段泡沫 | 51.60 | 4.23 |
| 一次扫选沉砂 | 53.20 | 7.50 |
| 一次扫选泡沫 | 40.10 | 8.20 |
| 二次扫选沉砂 | 46.80 | 3.20 |
| 浮选尾矿 | 37.20 | 7.20 |
), ArticleFig(id=1187100904458175145, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027204799082998, language=CN, label=表2, caption=
实验室两次扫选结果(质量分数) %
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| 名称 | 铁品位 | F含量 |
| 粗选二段泡沫 | 51.60 | 4.23 |
| 一次扫选沉砂 | 53.20 | 7.50 |
| 一次扫选泡沫 | 40.10 | 8.20 |
| 二次扫选沉砂 | 46.80 | 3.20 |
| 浮选尾矿 | 37.20 | 7.20 |
), ArticleFig(id=1187100904554644139, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027204799082998, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 改进前 | | 改进后 |
| 产率 | 铁品位 | F含量 | 产率 | 铁品位 | F含量 |
| 磁选精矿 | 100 | 60.09 | 2.26 | | 100 | 60.50 | 2.10 |
| 浮选精矿 | 74.23 | 67.35 | 0.40 | | 80.39 | 67.11 | 0.42 |
| 浮选尾矿 | 25.77 | 38.75 | 8.50 | | 19.61 | 33.41 | 8.00 |
), ArticleFig(id=1187100904630141612, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027204799082998, language=CN, label=表3, caption=
改进前后浮选生产作业指标对比(质量分数) %
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 改进前 | | 改进后 |
| 产率 | 铁品位 | F含量 | 产率 | 铁品位 | F含量 |
| 磁选精矿 | 100 | 60.09 | 2.26 | | 100 | 60.50 | 2.10 |
| 浮选精矿 | 74.23 | 67.35 | 0.40 | | 80.39 | 67.11 | 0.42 |
| 浮选尾矿 | 25.77 | 38.75 | 8.50 | | 19.61 | 33.41 | 8.00 |
), ArticleFig(id=1187100904701444781, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027204799082998, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶段 | 水玻璃 | GQ601 |
| 改进前 | 22 | 70 |
| 改进后 | 17 | 48 |
), ArticleFig(id=1187100904760165038, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027204799082998, language=CN, label=表4, caption=
改进前后浮选生产药剂对比 L/min
, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶段 | 水玻璃 | GQ601 |
| 改进前 | 22 | 70 |
| 改进后 | 17 | 48 |
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