Abstract：A method was established for the determination of calcium oxide, magnesium oxide, silicon dioxide, aluminium oxide, phosphorus and manganese oxide in the auxiliary materials for steelmaking containing metals and other reducing agents by X-ray fluorescence spectroscopy. The sample was pre-oxidized and fused at high temperature in a graphite crucible with the mixed flux of lithium carbonate and lithium tetraborate and then melted into a glass fuse piece with lithium tetraborate at high temperature in a platinum-gold crucible. The composition of the glass fuse piece was determined by X-ray fluorescence spectroscopy.The flux system for pre-oxidation and fusion, the dilution ratio between sample and flux, and the correction of loss on ignition were discussed. The serial certified reference materials with concentration gradiant, which were synthesized with standard samples of limestone, slag, silica and manganese were used to plot the calibration curve. The precision for method was investigated and the relative standard deviation (RSD, n=10) was found in the range of 0.09 %-1.5 %. The accuracy test for method was conducted and the measured results were consistent with those obtained by the wet method. t test showed that the proposed method exhibited no significant difference from the wet method.
杨新能, 李小青, 杨大军. X射线荧光光谱法测定含还原剂的炼钢辅料中化学成分[J]. 冶金分析, 2014, 34(2): 40-43.
YANG Xin-neng , LI Xiao-qing, YANG Da-jun. Determination of chemical composition of steelmaking auxiliary materialscontaining reducing agents by X-ray fluorescence spectrometry. , 2014, 34(2): 40-43.
Claisse F, Blanchette J S. Physics and Chemistry of Borate Fusion(硼酸盐熔融的物理与化学) [M]. Translated by ZHUO Shang-jun(卓尚军, 译). Shanghai: East China University of Science and Technology Press(上海: 华东理工大学出版社), 2006.
