Article(id=1314908241352552647, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314908074188562588, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2026.04.026, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1773072000000, receivedDateStr=2026-03-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791428154551, onlineDateStr=2026-10-08, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791428154551, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791428154551, creator=13701087609, updateTime=1791428154551, updator=13701087609, issue=Issue{id=1314908074188562588, tenantId=1146029695717560320, journalId=1235980550691926019, year='2026', volume='46', issue='4', pageStart='1', pageEnd='266', issueExtLink='null', onlineDate='null', pubDate='1785513600000', pubDateStr='2026-08-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1791428114697, creator='13701087609', updateTime=1791430419337, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314917740654191268, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314908074188562588, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314917740654191269, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1314908074188562588, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=169, endPage=174, ext={EN=ArticleExt(id=1314908241595822280, articleId=1314908241352552647, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Determination Method of Calcium Fluoride Content in Complex Low-Grade Fluorite Ore, columnId=1236276106727321817, journalTitle=Mining and Metallurgical Engineering, columnName=METALLURGY, runingTitle=null, highlight=null, articleAbstract=

An optimized two-step separation-titration method was adopted to determine calcium fluoride content in a complex low-grade fluorite ore. Firstly, the sample was leached with 2% dilute hydrochloric acid for 150 min under magnetic stirring to efficiently separate interfering minerals such as calcite, dolomite and apatite, showing the leaching rates exceeding 98%. The residue was further leached with 80 g/L aluminum trichloride solution, and the calcium fluoride content was subsequently quantified via EDTA titration. Given that approximately 10% of fluorite would be leached by 2% hydrochloric acid, a correction coefficient (K=1.10) was introduced to calibrate the test results. The experimental results demonstrate that the relative errors for samples with various calcium fluoride contents determined by this method are within the permissible range (±0.25%), showing excellent consistency with theoretical blending values. The determination results are basically consistent with data obtained by Mineral Liberation Analyzer (MLA) and total fluorine content testing. It is concluded that this method effectively addresses the difficulty in accurate determination of calcium fluoride in complex low-grade fluorite ore, and can provide a reliable reference for mineral resource evaluation and optimization of beneficiation and metallurgical processes.

, authors=Ting ZHOU^{1, 2}, Zishang LI³, Binghong YANG^{1, 2}, Lin YANG^{1, 2}, authorsList=Ting ZHOU, Zishang LI, Binghong YANG, Lin YANG, 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=1314908242036224201, articleId=1314908241352552647, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=复杂低品位萤石矿中氟化钙含量的测定方法研究, columnId=1236276107322913000, journalTitle=矿冶工程杂志, columnName=冶金, runingTitle=null, highlight=null, articleAbstract=

采用优化的两步分离-滴定法测定复杂低品位萤石矿中氟化钙含量，首先采用2%稀盐酸溶液磁搅拌浸出试料150 min，高效分离方解石、白云石、磷灰石等干扰矿物（浸出率均达98%以上）；残渣经80 g/L三氯化铝溶液浸出后，通过EDTA滴定法测定CaF₂含量。针对2%盐酸对萤石约10%的浸出率，引入校正系数K=1.10对测定结果进行校正。结果表明，该方法对不同CaF₂含量的测定相对误差均在允许范围内（±0.25%以内，与理论配比值高度吻合），样品测定结果与自动矿物分析仪（MLA）及总氟含量数据基本吻合。该方法有效解决了复杂低品位萤石矿中CaF₂准确测定难题，可为矿产资源评估与选冶工艺优化提供可靠依据。

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周婷（1985—），女，湖南衡阳人，硕士，工程师，主要从事矿物元素分析及化学物相分析。E-mail: 791209652@qq.com

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周婷（1985—），女，湖南衡阳人，硕士，工程师，主要从事矿物元素分析及化学物相分析。E-mail: 791209652@qq.com

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