摘要
采用（1＋1）盐酸分解磁性铁,考查溶解温度和溶解时间的影响,建立（1＋1）盐酸分解—重铬酸钾容量法测定超贫磁铁矿中磁性铁含量的分析方法。将此方法用于标准物质和实际样品中磁性铁的测定,标准物质分析结果的相对误差在0.43%~3.20%之间,实际样品重复分析结果的相对偏差在0.84%-1.12%,符合规范要求,适合推广应用于大批量超贫磁铁矿中磁性铁的分析。
In this paper,the method of（ 1 ＋ 1） hydrochloric acid dissolution was conducted to examine the effect of dissolving temperature and time and established the analysis method of determination of magnetic iron in ultra-low-grade magnetite by potassium dichrote volumetric method with（ 1 ＋ 1） hydrochloric acid dissolution. This method was also used to determinate megnetic iron in actual samples and standard substances. The relative error of analysis results in standard substances were 0. 43% to 3. 20% and the ralative deviation of repeated analysis results in actul samples were 0. 84% to1. 12%. This method meets the requirments of specification and is suitable for the batch analysis of magnetic iron in ultra-low-grade magnetite.
出处
《资源环境与工程》
2014年第6期1013-1015,共3页
Resources Environment & Engineering
基金
中国地质大调查项目--地质实验测试技术研发示范与应用(12120113014300和12120113015800)
关键词
超贫磁铁矿
磁性铁
(1+1)盐酸
重铬酸钾容量法
ultra-low-magnetite
megnetic iron
（1 ＋ 1） hydrochloric acid
potassium dichromate volumetric method
