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Ferrosilicon is the deoxidizer and alloying agent in steel-making process as well as aluminum content is the more important quality index. It is suggested that the sample should be dissolved with nitric acid and hydrofluoric acid as well as Fe, Mn, Ti and other elements should be precipitated by sodium hydroxide to separate from aluminum so that the aluminum and EDTA can form complex in subacidity for the experiment. Excessive EDTA is titrated with copper sulfate standard solution and PAN is as the indicator. The repeatability limit r and reproducibility limit R of EDTA titration are determined by precision experiment and mathematical statistics to be used for quality decision of method detection to ensure the accuracy of detection results.

, authors=Jing-tao Zhou, Ying Wang, authorsList=Jing-tao Zhou, Ying Wang, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319243407025877910, articleId=1319243406501589908, tenantId=1146029695717560320, journalId=1185652524569653253, language=CN, title=EDTA滴定法测定硅铁中的铝, columnId=1185882040642716431, journalTitle=包钢科技, columnName=其他, runingTitle=null, highlight=null, articleAbstract=

硅铁合金是炼钢工艺中的脱氧剂及合金剂,其中铝含量是比较重要的质量指标。试验提出以硝酸、氢氟酸溶解试样,氢氧化钠沉淀铁、锰、钛等元素使之与铝分离,在微酸性中使铝与EDTA形成络合物,以PAN为指示剂,用硫酸铜标准溶液滴定过量的EDTA。通过精密度实验,经数理统计后确定了EDTA滴定法的重复性限r和再现性限R,用于方法检测的质量判定,保证检测结果的准确度。

, authors=周景涛, 王英, authorsList=周景涛, 王英, authorCompany=null, correspAuthors=null, authorNote=

周景涛(1969-),女,辽宁省瓦房店市人,硕士,正高级工程师,现从事冶金分析技术管理工作。

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周景涛(1969-),女,辽宁省瓦房店市人,硕士,正高级工程师,现从事冶金分析技术管理工作。

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周景涛(1969-),女,辽宁省瓦房店市人,硕士,正高级工程师,现从事冶金分析技术管理工作。

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EDTA滴定法测定硅铁中的铝
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周景涛 , 王英
包钢科技 | 其他 2020,46(6): 91-94
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包钢科技 |其他 2020 , 46 (6) : 91 -94
EDTA滴定法测定硅铁中的铝
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周景涛, 王英
作者信息
  • 内蒙古包钢钢联股份有限公司化检验中心,内蒙古 包头 014010
作者简介:

周景涛(1969-),女,辽宁省瓦房店市人,硕士,正高级工程师,现从事冶金分析技术管理工作。

Determination of Aluminum in Ferrosilicon with EDTA Titration
Jing-tao Zhou, Ying Wang
Affiliations
  • Chemical Inspection Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
出版时间: 2020-12-25 doi: 10.13647/j.cnki.btgkj.2020.06.024
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硅铁合金是炼钢工艺中的脱氧剂及合金剂,其中铝含量是比较重要的质量指标。试验提出以硝酸、氢氟酸溶解试样,氢氧化钠沉淀铁、锰、钛等元素使之与铝分离,在微酸性中使铝与EDTA形成络合物,以PAN为指示剂,用硫酸铜标准溶液滴定过量的EDTA。通过精密度实验,经数理统计后确定了EDTA滴定法的重复性限r和再现性限R,用于方法检测的质量判定,保证检测结果的准确度。

EDTA滴定法  /  硅铁  /  铝  /  测定

Ferrosilicon is the deoxidizer and alloying agent in steel-making process as well as aluminum content is the more important quality index. It is suggested that the sample should be dissolved with nitric acid and hydrofluoric acid as well as Fe, Mn, Ti and other elements should be precipitated by sodium hydroxide to separate from aluminum so that the aluminum and EDTA can form complex in subacidity for the experiment. Excessive EDTA is titrated with copper sulfate standard solution and PAN is as the indicator. The repeatability limit r and reproducibility limit R of EDTA titration are determined by precision experiment and mathematical statistics to be used for quality decision of method detection to ensure the accuracy of detection results.

EDTA titration  /  ferrosilicon  /  aluminum  /  determination
周景涛, 王英. EDTA滴定法测定硅铁中的铝. 包钢科技, 2020 , 46 (6) : 91 -94 . DOI: 10.13647/j.cnki.btgkj.2020.06.024
Jing-tao Zhou, Ying Wang. Determination of Aluminum in Ferrosilicon with EDTA Titration[J]. Science & Technology of Baotou Steel, 2020 , 46 (6) : 91 -94 . DOI: 10.13647/j.cnki.btgkj.2020.06.024

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doi: 10.13647/j.cnki.btgkj.2020.06.024
  • 接收时间:2020-09-08
  • 首发时间:2026-10-20
  • 出版时间:2020-12-25
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  • 收稿日期:2020-09-08
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    内蒙古包钢钢联股份有限公司化检验中心,内蒙古 包头 014010
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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