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采用玻璃融片、波长色散X-荧光光谱法[1-3]测定铁矿石中镍、铬含量,使用经ICP法准确定值、涵盖被测矿种的试样绘制工作曲线,运用经验系数法用三元线性回归的方法求出“强度—含量”公式及各次系数,对基体进行校正,计算试样中待测组分含量。方法准确度、精密度满足分析要求,适用于铁矿石、铁精矿、烧结矿、球团矿等含铁物料中镍、铬的测定。
The content of nickel and chromium in iron ore was determined by glass melt chip and wavelength dispersive X-ray fluorescence spectrometry [1-3]. The working curve drawn by the sample by ICP method was plotted, and the empirical coefficient Method of ternary linear regression method to find “strength - content ” formula and each coefficient, the matrix is corrected, calculate the sample content of the test component. The accuracy and precision of the method meet the requirements of analysis and are suitable for the determination of nickel and chromium in iron-bearing materials such as iron ore, iron concentrates, sinter and pellets.