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铁矿石中稀土总量的测定,特別是稀土含量较高(>1％)的试样,目前,仍是以化学分析方法较其他方法优越。化学分析方法中一般以盐酸介质中草酸盐重量法为主,在生产实践中得到广泛的应用。按照一九七四年八月在包头召开的修订《铁矿石化学分析》部标座谈会纪要,要确定草酸盐重量法作为铁矿石中高含量稀土测定方法的起草方案。在此基础上对铁矿石中稀土总量的测定和分离做了些试验和验证工作,认为草酸沉淀稀土不仅可用来灼烧为
Determination of the total amount of rare earths in iron ores, especially those with high RE content (> 1%), is still superior to other methods by chemical analysis. The chemical analysis method is generally based on the oxalate gravimetric method in hydrochloric acid medium and is widely used in the production practice. In accordance with the Minutes of the Symposium on Revision of the “Iron Ore Chemical Analysis” Symposium held in Baotou in August 1974, the oxalate gravimetric method should be determined as a drafting solution for the determination of high-content rare earths in iron ores. On this basis, some tests and verification work have been done on the determination and separation of the total amount of rare earths in the iron ore. It is believed that the oxalic acid precipitation rare earth can be used not only for burning