CAJ | 학술논문

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。
채용（1+1）염산분해자성철，고사용해온도화용해시간적영향，건립（1+1）염산분해—중락산갑용량법측정초빈자철광중자성철함량적분석방법。장차방법용우표준물질화실제양품중자성철적측정，표준물질분석결과적상대오차재0．43％～3．20％지간，실제양품중복분석결과적상대편차재0．84％～1．12％，부합규범요구，괄합추엄응용우대비량초빈자철광중자성철적분석。
In this paper,the method of (1+1) hydrochloric acid dissolution was conducted to examine the effect of dis-solving 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%to 1 .12%.This method meets the requirments of specification and is suitable for the batch analysis of magnetic iron in ul -tra-low-grade magnetite .