萤石中氟化钙快速测定方法的研究与应用

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关键词：萤石； CaF2 ；快速分析

DOI：10.26915/j.issn1003-0514.2025.04.011

中图分类号：O655.2 文献标识码：B 文章编号：1003-0514（2025）04-0043-04

Researchand application of rapid determination method for calcium fluoride in fluorite

LiuGuizhen，SuJie，Yao Ruixue，Gao Hongxing，Du Shiyi （Beijing ShougangCo.，Ltd.，QiananHebei O644O4，China）

Abstract：Theclasicalanalysis methodoffluoriteistofilteroutcalcium fluoridefromcalciumcarbonateextracted by dilute aceticacid，decompose itwithhydrochloricacidandboricacid，andthentestthecontentofcalciumfluoridebyEDTA volumetricmethod.Thismethodhashighaccuracy，uttheanalysisperiodislong，anditisdificult toadapttotheprouction neds.Therefore，according totheactual situation，animprovedfluoriteCaFassymethodwasproposed，whichusedmixed acidofboricacidandhydrochloricacidtodissolveand determinethecalciumcontent，andusedcalcium indicatortoreplace the mixed indicatorofcalcein，thyme phenolphthaleinand anhydrous potassium sulfate.Theresults were fast andaccurate， and the analysis time was about 0.5h ：

Key words：fluorite; CaF2 ；rapid analysis

1前言

萤石（Fluorite）又称氟石，具有降低难熔物质的熔点、促进炉渣流动、使炉渣和金属很好分离、在冶炼过程中脱硫脱磷、增强金属的可煅性和抗张强度等特点，在钢铁工业中主要用于转炉或电炉炼钢的造渣。（剩余3514字）