Determination of major components in aluminum ore,iron ore, calcium ore,magnesium ore and manganese ore by X-ray fluorescence spectrometry with fusion sample preparation
ZHANG Wenyu, XU Xiaohui
Chengdehua Prospecting 514 Geology and Ore Testing and Research Co.,Ltd.,Chengde 067000, China
Abstract：X-ray fluorescence spectrometry (XRF) with fusion sample preparation has been applied for the determination of major and minor components in various ore samples. However, many types of minerals should be tested in geological laboratory, and the test for single ore can hardly meet the requirements. The fusion sample preparation method was adopted in experiments. A method for the analysis of major components in various ores by XRF was established based on the standard samples and mixed standard samples of different ores. The following fusion conditions were obtained in experiments: 0.400 0 g of sample was added into 7.000 0 g of lithium tetraborate as the flux; 4 drops of 150 g/L lithium bromide solution were used as release agent; 0.500 0 g of lithium nitrate was used as oxidizing agent and 0.400 0 g of lithium fluoride was used as fluidizing agent. The result showed that the influence of matrix effect on determination results was not significant. The presicion test was conducted,and the relative standard deviation (RSD, n=6) of major component,such as the Al2O3 in aluminum ore, the Fe in iron ore, the CaO in calcium ore,the MgO in magnesium ore, and the Mn in manganese ore was 0.49%, 0.37%, 0.64%, 0.38% and 0.85%, respectively.Trueness test showed that the found results of SiO2, Al2O3, Ca, MgO, Mn and Fe in 5 mineral samples were consistent with those obtained by other methods. The proposed method used a set of standard samples for the analysis of major components in various ores sample, and it could be used for the testing in geological laboratory.
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