Article(id=1198267809093480604, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198267803028521972, articleNumber=1009-5438(2023)01-0093-06, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1630598400000, receivedDateStr=2021-09-03, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763618908427, onlineDateStr=2025-11-20, pubDate=1677254400000, pubDateStr=2023-02-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763618908427, onlineIssueDateStr=2025-11-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763618908427, creator=13701087609, updateTime=1763618908427, 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=93, endPage=98, ext={EN=ArticleExt(id=1198267809429024932, articleId=1198267809093480604, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Determination of Lanthanum, Cerium, Praseodymium, Neodymium and Samarium in Iron Ore and Slags with Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES), columnId=1187102804364640261, journalTitle=Science & Technology of Baotou Steel, columnName=Others, runingTitle=null, highlight=null, articleAbstract=
In this paper, the dissolution methods of iron ore and slags are studied. The decomposition method of preliminarily dissolving with hydrochloric acid followed by treating the residue with mixed flux of sodium carbonate-boric acid is applied. The analytical spectral lines with high sensitivity and fewer interferences are determined as analytical spectral lines through optimizing and selecting the analytical spectral lines of lanthanum, cerium, praseodymium, neodymium and samarium by experiments. Moreover, the contents of such five elements as lanthanum, cerium, praseodymium, neodymium and samarium are determined simultaneously with ICP-AES. The results showed that the lower detection limit of lanthanum, cerium, praseodymium, neodymium and samarium in iron ore and slags was 0.005 0%, the upper detection limits of rare earth elements in iron ore were 5% for La, 10% for Ce, 1% for Pr, 2% for Nd and 1% for Sm as well as all the upper detection limits of rare earth elements in slags were 0.500%.
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文章研究了铁矿石、炉渣的溶解方法,采用盐酸初步溶解再用碳酸钠-硼酸混合熔剂处理残渣的分解方法,通过试验对镧、铈、镨、钕、钐元素的分析谱线进行优化选择,确定了灵敏度高、干扰少的分析谱线作为分析谱线,采用等离子体发射光谱法同时测定镧、铈、镨、钕、钐五元素含量。结果表明,铁矿石、炉渣中镧、铈、镨、钕、钐元素的检出下限均为0.005 0%,铁矿石中各稀土元素测定上限:La测定上限为5%,Ce测定上限为10%,Pr测定上限为1%,Nd测定上限为2%,Sm测定上限为1%;炉渣中各稀土元素测定上限均为0.500%。
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段晓晨(1988-),女,内蒙古包头市人,工程师,现从事冶金分析工作。
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段晓晨(1988-),女,内蒙古包头市人,工程师,现从事冶金分析工作。
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段晓晨(1988-),女,内蒙古包头市人,工程师,现从事冶金分析工作。
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Union Co. , Ltd. , Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198267810267885748, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, companyId=1198267810255302834, 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技术中心,内蒙古 包头 014010)])])], keywords=[Keyword(id=1198267811240964303, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=EN, orderNo=1, keyword=ICP-AES), Keyword(id=1198267811333238993, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=EN, orderNo=2, keyword=ore), Keyword(id=1198267811412930771, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=EN, orderNo=3, keyword=slag), Keyword(id=1198267811488428245, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=EN, orderNo=4, keyword=rare earth content), Keyword(id=1198267811568120023, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=CN, orderNo=1, keyword=ICP-AES), Keyword(id=1198267811656200408, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=CN, orderNo=2, keyword=矿石), Keyword(id=1198267811735892187, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=CN, orderNo=3, keyword=炉渣), Keyword(id=1198267811823972571, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=CN, orderNo=4, keyword=稀土含量)], refs=[Reference(id=1198267813774323960, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, doi=null, pmid=null, pmcid=null, year=2014, volume=33, issue=1, pageStart=12, pageEnd=19, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=吴石头, 王亚平, 孙德忠, journalName=岩矿测试, refType=null, unstructuredReference=吴石头, 王亚平, 孙德忠, 等. 电感耦合等离子体发射光谱法测定稀土矿石中15种稀土元素:四种前处理方法的比较[J].
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45(6):91-94., articleTitle=离子体质谱法测定钢中镧、铈、镨、钕、钐, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1198267810255302834, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, xref=null, ext=[AuthorCompanyExt(id=1198267810263691443, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, companyId=1198267810255302834, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Technical Center of Inner Mongolia Baotou Steel Union Co. , Ltd. , Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198267810267885748, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, companyId=1198267810255302834, 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技术中心,内蒙古 包头 014010)])], figs=[ArticleFig(id=1198267812016910558, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 分析元素 | 波长/nm | 功率/W | 净强度 | 功率/W | 净强度 | 功率/W | 净强度 |
| La | 408.672 | 1 100 | 300 905 | 1 200 | 312 000 | 1 300 | 332 010 |
| Ce | 418.660 | 1 100 | 461 132 | 1 200 | 493 008 | 1 300 | 507 630 |
| Pr | 422.293 | 1 100 | 115 500 | 1 200 | 128 650 | 1 300 | 138 560 |
| Nd | 406.109 | 1 100 | 17 645 | 1 200 | 18 540 | 1 300 | 19 754 |
| Sm | 359.260 | 1 100 | 92 000 | 1 200 | 942 40 | 1 300 | 100 241 |
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功率对被测元素的影响
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| 分析元素 | 波长/nm | 功率/W | 净强度 | 功率/W | 净强度 | 功率/W | 净强度 |
| La | 408.672 | 1 100 | 300 905 | 1 200 | 312 000 | 1 300 | 332 010 |
| Ce | 418.660 | 1 100 | 461 132 | 1 200 | 493 008 | 1 300 | 507 630 |
| Pr | 422.293 | 1 100 | 115 500 | 1 200 | 128 650 | 1 300 | 138 560 |
| Nd | 406.109 | 1 100 | 17 645 | 1 200 | 18 540 | 1 300 | 19 754 |
| Sm | 359.260 | 1 100 | 92 000 | 1 200 | 942 40 | 1 300 | 100 241 |
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载气流量 /(L·min-1) | 强度 |
| La | Ce | Pr | Nd | Sm |
| 0.60 | 241 002 | 274 654 | 33 429 | 283 773 | 40 827 |
| 0.64 | 339 010 | 362 706 | 48 035 | 415 573 | 56 694 |
| 0.68 | 369 233 | 333 889 | 43 538 | 364 393 | 53 254 |
| 0.72 | 380 546 | 405 955 | 56 526 | 461 780 | 69 516 |
| 0.76 | 527 789 | 564 751 | 76 208 | 625 895 | 94 832 |
| 0.80 | 607 559 | 672 953 | 98 655 | 746 459 | 119 345 |
| 0.84 | 592 893 | 604 962 | 90 107 | 745 712 | 115 676 |
| 0.90 | 436 844 | 457 122 | 73 299 | 580 963 | 98 222 |
| 1.00 | 140 126 | 122 480 | 27 337 | 222 484 | 39 554 |
| 1.04 | 22 415 | 20 918 | 8 001 | 46 513 | 19 226 |
| 1.08 | 6 823 | 6 026 | 3 316 | 15 856 | 15 068 |
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载气流量与测定强度的关系
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载气流量 /(L·min-1) | 强度 |
| La | Ce | Pr | Nd | Sm |
| 0.60 | 241 002 | 274 654 | 33 429 | 283 773 | 40 827 |
| 0.64 | 339 010 | 362 706 | 48 035 | 415 573 | 56 694 |
| 0.68 | 369 233 | 333 889 | 43 538 | 364 393 | 53 254 |
| 0.72 | 380 546 | 405 955 | 56 526 | 461 780 | 69 516 |
| 0.76 | 527 789 | 564 751 | 76 208 | 625 895 | 94 832 |
| 0.80 | 607 559 | 672 953 | 98 655 | 746 459 | 119 345 |
| 0.84 | 592 893 | 604 962 | 90 107 | 745 712 | 115 676 |
| 0.90 | 436 844 | 457 122 | 73 299 | 580 963 | 98 222 |
| 1.00 | 140 126 | 122 480 | 27 337 | 222 484 | 39 554 |
| 1.04 | 22 415 | 20 918 | 8 001 | 46 513 | 19 226 |
| 1.08 | 6 823 | 6 026 | 3 316 | 15 856 | 15 068 |
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| 分析元素 | 波长/nm | 观测方式 | 净强度 | 观测方式 | 净强度 |
| La | 408.672 | 轴向 | 539 716 | 径向 | 68 698 |
| Ce | 418.660 | 轴向 | 418 887 | 径向 | 63 538 |
| Pr | 422.293 | 轴向 | 142 822 | 径向 | 24 499 |
| Nd | 406.109 | 轴向 | 19 754 | 径向 | 8 500 |
| Sm | 359.260 | 轴向 | 54 367 | 径向 | 7 119 |
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观测方式对被测元素影响
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| 分析元素 | 波长/nm | 观测方式 | 净强度 | 观测方式 | 净强度 |
| La | 408.672 | 轴向 | 539 716 | 径向 | 68 698 |
| Ce | 418.660 | 轴向 | 418 887 | 径向 | 63 538 |
| Pr | 422.293 | 轴向 | 142 822 | 径向 | 24 499 |
| Nd | 406.109 | 轴向 | 19 754 | 径向 | 8 500 |
| Sm | 359.260 | 轴向 | 54 367 | 径向 | 7 119 |
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| 溶解方法 | 试样 名称 | 编号 | 测定值 | RExOy 标值 | 误差 |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 | RExOy |
| 方法一 | 矿B-K-2 | 1# | 0.502 | 1.13 | 0.070 | 0.341 | 0.052 | 2.10 | 2.24 | -0.14 |
| 矿R-715 | 2# | 0.895 | 1.62 | 0.199 | 0.695 | 0.087 | 3.50 | 3.37 | 0.13 |
| 渣样 | 3# | 0.491 | 0.797 | 0.052 | 0.294 | 0.0007 | 1.63 | | |
| 方法二 | 矿B-K-2 | 1# | 0.535 | 1.19 | 0.087 | 0.416 | 0.072 | 2.30 | 2.24 | 0.06 |
| 矿R-715 | 2# | 0.899 | 1.60 | 0.197 | 0.700 | 0.084 | 3.48 | 3.37 | 0.11 |
| 渣样 | 3# | 0.509 | 0.810 | 0.048 | 0.309 | 0.000 4 | 1.68 | | |
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不同分解方法检测结果(质量分数)%
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| 溶解方法 | 试样 名称 | 编号 | 测定值 | RExOy 标值 | 误差 |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 | RExOy |
| 方法一 | 矿B-K-2 | 1# | 0.502 | 1.13 | 0.070 | 0.341 | 0.052 | 2.10 | 2.24 | -0.14 |
| 矿R-715 | 2# | 0.895 | 1.62 | 0.199 | 0.695 | 0.087 | 3.50 | 3.37 | 0.13 |
| 渣样 | 3# | 0.491 | 0.797 | 0.052 | 0.294 | 0.0007 | 1.63 | | |
| 方法二 | 矿B-K-2 | 1# | 0.535 | 1.19 | 0.087 | 0.416 | 0.072 | 2.30 | 2.24 | 0.06 |
| 矿R-715 | 2# | 0.899 | 1.60 | 0.197 | 0.700 | 0.084 | 3.48 | 3.37 | 0.11 |
| 渣样 | 3# | 0.509 | 0.810 | 0.048 | 0.309 | 0.000 4 | 1.68 | | |
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| 项目 | La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
| 矿检出限DL | 0.000 03 | 0.000 06 | 0.000 09 | 0.000 09 | 0.000 21 |
| 矿测定下限 | 0.000 3 | 0.000 6 | 0.000 9 | 0.000 9 | 0.002 1 |
| 渣检出限DL | 0.000 03 | 0.000 12 | 0.000 24 | 0.000 09 | 0.000 12 |
| 渣测定下限 | 0.000 3 | 0.001 2 | 0.002 4 | 0.000 9 | 0.001 2 |
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检出限和测定下限%
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| 项目 | La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
| 矿检出限DL | 0.000 03 | 0.000 06 | 0.000 09 | 0.000 09 | 0.000 21 |
| 矿测定下限 | 0.000 3 | 0.000 6 | 0.000 9 | 0.000 9 | 0.002 1 |
| 渣检出限DL | 0.000 03 | 0.000 12 | 0.000 24 | 0.000 09 | 0.000 12 |
| 渣测定下限 | 0.000 3 | 0.001 2 | 0.002 4 | 0.000 9 | 0.001 2 |
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| 元素 | 矿 | | 渣 |
| 含量 | 测定值 | 回收率 | 含量 | 测定值 | 回收率 |
| La2O3 | 5 | 5.020 | 100.4 | | 0.5 | 0.495 | 99.0 |
| CeO2 | 10 | 9.820 | 98.2 | | 0.5 | 0.498 | 99.6 |
| Pr6O11 | 1 | 1.010 | 101.0 | | 0.5 | 0.504 | 100.8 |
| Nd2O3 | 2 | 2.080 | 104.0 | | 0.5 | 0.512 | 102.4 |
| Sm2O3 | 1 | 0.994 | 99.4 | | 0.5 | 0.496 | 99.2 |
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检测上限测定回收率试验%
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| 元素 | 矿 | | 渣 |
| 含量 | 测定值 | 回收率 | 含量 | 测定值 | 回收率 |
| La2O3 | 5 | 5.020 | 100.4 | | 0.5 | 0.495 | 99.0 |
| CeO2 | 10 | 9.820 | 98.2 | | 0.5 | 0.498 | 99.6 |
| Pr6O11 | 1 | 1.010 | 101.0 | | 0.5 | 0.504 | 100.8 |
| Nd2O3 | 2 | 2.080 | 104.0 | | 0.5 | 0.512 | 102.4 |
| Sm2O3 | 1 | 0.994 | 99.4 | | 0.5 | 0.496 | 99.2 |
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| 样品名称 | La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 | RExOy测定值 | RExOy标值 | 差值 |
| 包头矿R-717 | 3.55 | 6.44 | 0.712 | 2.27 | 0.254 | 13.23 | 13.06 | 0.17 |
| 包头矿R-715 | 0.895 | 1.62 | 0.198 | 0.695 | 0.087 | 3.50 | 3.37 | 0.13 |
| 原矿B-K-1 | 0.607 | 1.42 | 0.099 | 0.421 | 0.060 | 2.61 | 2.71 | -0.10 |
| 包头精矿B-K-2 | 0.502 | 1.13 | 0.070 | 0.341 | 0.052 | 2.10 | 2.24 | -0.14 |
| 高炉渣R-711 | 1.27 | 2.50 | 0.298 | 1.22 | 0.147 | 5.44 | 5.32 | 0.14 |
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准确度试验(质量分数)%
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| 样品名称 | La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 | RExOy测定值 | RExOy标值 | 差值 |
| 包头矿R-717 | 3.55 | 6.44 | 0.712 | 2.27 | 0.254 | 13.23 | 13.06 | 0.17 |
| 包头矿R-715 | 0.895 | 1.62 | 0.198 | 0.695 | 0.087 | 3.50 | 3.37 | 0.13 |
| 原矿B-K-1 | 0.607 | 1.42 | 0.099 | 0.421 | 0.060 | 2.61 | 2.71 | -0.10 |
| 包头精矿B-K-2 | 0.502 | 1.13 | 0.070 | 0.341 | 0.052 | 2.10 | 2.24 | -0.14 |
| 高炉渣R-711 | 1.27 | 2.50 | 0.298 | 1.22 | 0.147 | 5.44 | 5.32 | 0.14 |
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| 样品名称 | 项目 | 测定值/% |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
包头矿 R-717 | 技术中心 | 3.55 | 6.54 | 0.712 | 2.24 | 0.253 |
| 稀土院 | 3.49 | 6.68 | 0.693 | 2.19 | 0.263 |
| 差值 | 0.06 | 0.14 | 0.019 | 0.05 | 0.010 |
包头精矿 B-K-2 | 技术中心 | 0.502 | 1.13 | 0.070 | 0.341 | 0.052 |
| 加标量 | 0.500 | 0.500 | 0.100 | 0.200 | 0.050 |
| 测定值 | 1.01 | 1.633 | 0.168 | 0.537 | 0.103 |
| 回收率 | 101.6 | 100.6 | 98.0 | 98.0 | 102.0 |
高炉渣 R-711 | 技术中心 | 1.27 | 2.50 | 0.294 | 1.20 | 0.149 |
| 稀土院 | 1.29 | 2.54 | 0.288 | 1.18 | 0.153 |
| 差值 | 0.02 | 0.04 | 0.006 | 0.02 | 0.004 |
| 渣1# | 技术中心 | 0.118 | 0.230 | 0.034 | 0.106 | |
| 加标量 | 0.100 | 0.200 | 0.050 | 0.100 | 0.050 |
| 测定值 | 0.221 | 0.426 | 0.084 | 0.208 | 0.049 |
| 回收率 | 103.0 | 98.0 | 100.0 | 102.0 | 98.0 |
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准确度比对试验
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| 样品名称 | 项目 | 测定值/% |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
包头矿 R-717 | 技术中心 | 3.55 | 6.54 | 0.712 | 2.24 | 0.253 |
| 稀土院 | 3.49 | 6.68 | 0.693 | 2.19 | 0.263 |
| 差值 | 0.06 | 0.14 | 0.019 | 0.05 | 0.010 |
包头精矿 B-K-2 | 技术中心 | 0.502 | 1.13 | 0.070 | 0.341 | 0.052 |
| 加标量 | 0.500 | 0.500 | 0.100 | 0.200 | 0.050 |
| 测定值 | 1.01 | 1.633 | 0.168 | 0.537 | 0.103 |
| 回收率 | 101.6 | 100.6 | 98.0 | 98.0 | 102.0 |
高炉渣 R-711 | 技术中心 | 1.27 | 2.50 | 0.294 | 1.20 | 0.149 |
| 稀土院 | 1.29 | 2.54 | 0.288 | 1.18 | 0.153 |
| 差值 | 0.02 | 0.04 | 0.006 | 0.02 | 0.004 |
| 渣1# | 技术中心 | 0.118 | 0.230 | 0.034 | 0.106 | |
| 加标量 | 0.100 | 0.200 | 0.050 | 0.100 | 0.050 |
| 测定值 | 0.221 | 0.426 | 0.084 | 0.208 | 0.049 |
| 回收率 | 103.0 | 98.0 | 100.0 | 102.0 | 98.0 |
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| 项目 | 测定值/% |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
| 包头矿R-717 | 3.55 | 6.54 | 0.712 | 2.27 | 0.254 |
| 3.58 | 6.50 | 0.722 | 2.22 | 0.250 |
| 3.51 | 6.56 | 0.711 | 2.23 | 0.255 |
| 3.52 | 6.49 | 0.715 | 2.30 | 0.255 |
| 3.57 | 6.59 | 0.721 | 2.32 | 0.250 |
| 3.55 | 6.48 | 0.714 | 2.27 | 0.256 |
| 3.56 | 6.60 | 0.714 | 2.28 | 0.254 |
| 3.59 | 6.44 | 0.720 | 2.30 | 0.254 |
| 3.54 | 6.63 | 0.716 | 2.26 | 0.255 |
| 3.54 | 6.70 | 0.708 | 2.26 | 0.246 |
| 平均值 | 3.55 | 6.55 | 0.715 | 2.27 | 0.253 |
| 标准偏差 | 0.036 | 0.075 | 0.003 | 0.029 | 0.001 |
| RSD | 1.01 | 1.15 | 0.420 | 1.28 | 0.395 |
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包头矿(R-717)精密度试验
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| 项目 | 测定值/% |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
| 包头矿R-717 | 3.55 | 6.54 | 0.712 | 2.27 | 0.254 |
| 3.58 | 6.50 | 0.722 | 2.22 | 0.250 |
| 3.51 | 6.56 | 0.711 | 2.23 | 0.255 |
| 3.52 | 6.49 | 0.715 | 2.30 | 0.255 |
| 3.57 | 6.59 | 0.721 | 2.32 | 0.250 |
| 3.55 | 6.48 | 0.714 | 2.27 | 0.256 |
| 3.56 | 6.60 | 0.714 | 2.28 | 0.254 |
| 3.59 | 6.44 | 0.720 | 2.30 | 0.254 |
| 3.54 | 6.63 | 0.716 | 2.26 | 0.255 |
| 3.54 | 6.70 | 0.708 | 2.26 | 0.246 |
| 平均值 | 3.55 | 6.55 | 0.715 | 2.27 | 0.253 |
| 标准偏差 | 0.036 | 0.075 | 0.003 | 0.029 | 0.001 |
| RSD | 1.01 | 1.15 | 0.420 | 1.28 | 0.395 |
), ArticleFig(id=1198267813572997366, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 测定值/% |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
| 高炉渣R-711 | 1.27 | 2.50 | 0.298 | 1.22 | 0.147 |
| 1.25 | 2.53 | 0.298 | 1.21 | 0.147 |
| 1.22 | 2.51 | 0.291 | 1.23 | 0.145 |
| 1.24 | 2.50 | 0.300 | 1.23 | 0.149 |
| 1.28 | 2.50 | 0.300 | 1.21 | 0.146 |
| 1.27 | 2.51 | 0.301 | 1.22 | 0.147 |
| 1.27 | 2.51 | 0.296 | 1.20 | 0.147 |
| 1.28 | 2.49 | 0.298 | 1.19 | 0.146 |
| 1.29 | 2.49 | 0.298 | 1.20 | 0.148 |
| 1.25 | 2.46 | 0.297 | 1.21 | 0.146 |
| 平均值 | 1.26 | 2.50 | 0.298 | 1.21 | 0.147 |
| 标准偏差 | 0.021 | 0.018 | 0.006 | 0.013 | 0.001 |
| RSD | 1.67 | 0.720 | 2.03 | 1.07 | 0.680 |
), ArticleFig(id=1198267813640106231, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198267809093480604, language=CN, label=表10, caption=
高炉渣(R-711)精密度试验
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 测定值/% |
| La2O3 | CeO2 | Pr6O11 | Nd2O3 | Sm2O3 |
| 高炉渣R-711 | 1.27 | 2.50 | 0.298 | 1.22 | 0.147 |
| 1.25 | 2.53 | 0.298 | 1.21 | 0.147 |
| 1.22 | 2.51 | 0.291 | 1.23 | 0.145 |
| 1.24 | 2.50 | 0.300 | 1.23 | 0.149 |
| 1.28 | 2.50 | 0.300 | 1.21 | 0.146 |
| 1.27 | 2.51 | 0.301 | 1.22 | 0.147 |
| 1.27 | 2.51 | 0.296 | 1.20 | 0.147 |
| 1.28 | 2.49 | 0.298 | 1.19 | 0.146 |
| 1.29 | 2.49 | 0.298 | 1.20 | 0.148 |
| 1.25 | 2.46 | 0.297 | 1.21 | 0.146 |
| 平均值 | 1.26 | 2.50 | 0.298 | 1.21 | 0.147 |
| 标准偏差 | 0.021 | 0.018 | 0.006 | 0.013 | 0.001 |
| RSD | 1.67 | 0.720 | 2.03 | 1.07 | 0.680 |
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