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为了满足生产的要求,我们对黑色金属矿中氧化钙镁的测定做了一些改进工作,本文是总结之一。本法的特点是:无需过滤即能有效地消除高量铁、铝等的干扰;在同一分溶液中用 EGTA 和 DCTA 连滴钙镁。投产三年来,内外验合格率均达到95%以上,表明本法能取得准确快速的效果。方法概述在黑色金属矿石分析中,影响氧化钙镁结果的主要因素是铁和锰。为消除铁的干扰,我们采用20%六次甲基四胺使之成氢氧化物,在限定的100毫升溶液
In order to meet the requirements of production, we made some improvements on the determination of calcium and magnesium in ferrous metal ores. This article is one of the conclusions. The law is characterized by: without filtering that can effectively eliminate the high amount of iron, aluminum and other interference; in the same solution with EGTA and DCTA drops of calcium and magnesium. Put into operation three years, both inside and outside the test pass rate of 95% or more, indicating that this method can achieve accurate and rapid results. Summary of Methods In the ferrous metal ore analysis, the main factors that affect the results of calcium oxide and magnesium are iron and manganese. To eliminate iron interference, we use 20% hexamethylenetetramine to make a hydroxide, in a defined 100 ml solution