摘要
利用X射线荧光光谱仪进行了冶金原料膨润土中主次成分的测定。针对膨润土的基体结构进行了校准样品的人工配制;对试样处理方法、熔剂体系和稀释比例的选择进行了探讨;讨论了样品的烧损量对分析结果准确度的影响并选择相应的校正手段;采用大比例稀释、熔融制样和基体校正消除了试样的矿物效应、颗粒效应和基体的吸收-增强效应。利用本方法对膨润土中主次成分进行分析,结果与认定值或化学法测量值相吻合,可以满足冶金行业对原料膨润土中的SiO2,Al2O3,CaO,MgO,Fe2O3等成分在线分析和日常检测工作的需要。
The major and minor components in bentonite for metallurgical materials were determined by X-ray fluorescence spectrometry. The calibration sample was prepared manually according to the matrix structure of bentonite. The sample treatment method, the selection of flux system and the dilution ratio were discussed. The effect of sample loss on ignition on the accuracy of determination results was investigated, and the corresponding correction methods were selected. The mineral effect and granular effect of sample together with the absorption-enhancement effect of matrix were eliminated through the procedures of large-proportion dilution, sample preparation with fusion method and matrix correction. The major and minor components in bentonite samples were analyzed by the proposed method. The results were consistent with the certified values or those of the chemical method. This method could meet the online analysis and daily inspection requirements of SiO2, Al2O3, CaO, MgO and Fe2O3 in bentonite in metallurgical industry.
出处
《冶金分析》
CAS
CSCD
北大核心
2009年第10期13-16,共4页
Metallurgical Analysis
关键词
膨润土
X射线荧光光谱
基体效应
配制校样
烧损
bentonite
X-ray fluorescence spectrometry
matrix effect
preparation of calibration sample
loss on ignition
