一种含硅锰组分较高的钨矿中钙的络合滴定分析  

Analysis of Complex Titration of Calcium in a Tungsten Mine with Higher Silicon Manganese Composition

作　　者：张艳 ZHANG Yan(Hunan Xintian Ridge Tungsten Industry Co.,Ltd.,Chenzhou 423024,China)

机构地区：[1]湖南新田岭钨业有限公司,湖南郴州423024

出　　处：《化工管理》2021年第32期74-75,共2页Chemical Engineering Management

摘　　要：文章主要研究了硅含量较高的钨矿石中钙的含量测定,在强碱性溶液中用EDTA络合滴定钙时,防止钙与硅形成硅酸钙,阻碍EDTA与钙的络合,考察使用氟化物掩蔽,浓盐酸分解样品,沉淀分离硅,有效消除硅干扰,达到滴定钙的方法,手续简单,结果准确。This paper mainly studies the determination of calcium content in tungsten ores with high silicon content.To prevent the formation of calcium and silicon,investigate the use of fluoride mask,concentrated hydrochloric acid decomposition samples,precipitate silicon,effectively eliminate silicon interference and achieve the method of titrating calcium with simple procedures and accurate results.

关 键 词：EDTA 硅酸钙 氟化物 滴定 

分 类 号：TD95[矿业工程—选矿]