熔融制样-X射线荧光法快速分析硅铁合金中的元素

Rapid analysis of elements in ferrosilicon alloys byfusion sample preparation and X-ray fluorescence method

针对传统化学分析方法分析硅铁合金元素含量操作繁琐、效率低的问题,开发建立了熔融制样-X射线荧光分析法来快速分析硅铁合金元素含量。研究显示:选用碳酸锂熔融剂对硅铁合金预处理,并在1050℃×15 min条件下熔融,可避免高温硅铁试样对铂金坩埚的损坏,且熔融样品成分均匀;采用X射线荧光分析法分析硅铁合金元素的分析曲线相关系数均在0.99以上,分析结果与标准样品结果、传统国标法一致,多次分析再现性均在允差范围内,分析结果准确可靠;更重要的是,一次分析可快速表征硅铁合金中各元素含量。

Aiming at the problems of complicated operation and low efficiency of traditional chemical analysis methods for the analysis of ferrosilicon alloy element content,the fusion sample preparation-X-ray fluorescence analysis method was developed and established.The results showed that using lithium carbonate melting agent to pretreat ferrosilicon alloy and melting at 1050℃×15 min could avoid the damage of high temperature ferrosilicon sample to the platinum crucible,and the molten sample composition was uniform.The correlation coefficients of the analysis curves for ferrosilicon alloy elements by X-ray fluorescence analysis were all above 0.99,which were consistent with the standard sample results and the traditional national standard method,and the reproducibility of multiple analyses was within the tolerance range.Therefore,the analysis results were accurate and reliable.More importantly,a single analysis could quickly characterize the content of each element in ferrosilicon alloy.