X荧光光谱法分析LF-VD精炼炉炉渣

Determination of LF-VD Refining Furnace Slag by X ray Fluorescence Spectrometry

采用X荧光光谱仪分析LF VD精炼炉炉渣中TFe,CaO ,MgO ,Al2 O3 ,SiO2 ,TiO2 ,MnO ,P2 O5等8个组分。因精炼炉渣中氧化钙含量高 ,我们选用了 12个国家级、部级炉渣标准样品 ,再添加光谱纯试剂配制了数点合成标样 ,适应氧化钙、三氧化二铝、二氧化硅含量范围跨度较大的样品分析 ,同时使得分析曲线点分布均匀。用四硼酸锂作熔剂 ,高温熔融制样。进行了脱模剂、熔融温度及稀释比等制样条件的选择试验。采用PH模式、理论a系数校正基体的吸收增强效应 ,进行了方法的精密度及准确度试验。与化学法对照 ,各组份的定量分析结果令人满意。方法准确、快速。

Eight components, i.e. TFe, CaO, MgO, Al2O3, SiO2, TiO2, MnO and P2O5 in refining furnace slag were determined by X ray fluorescence spectrometer. Because the content of CaO was high, the authors selected 12 national and departmental grade slag standard samples and prepared a series of synthetic standard samples by adding spectrally pure reagents to them. The calibration curve is suitable to the sample analysis of CaO, MgO and SiO2 with widely varying range. Meanwhile, the points on the curve are even. The samples were prepared at high temperature by adding Li2B4O7 as flux. The experiments for the selection of the sample preparation conditions about strip reagents, melting temperature and dulition ratio were carried out. The matrix effects on absorption and enhancement were corrected by means of PH model and theoretical alpha coefficient. Moreover, the precision and accuracy experiments were performed. In comparison with chemical analysis method, the quantitative analytical results for each component are satisfactory. The method has proven rapid, precise and simple.