Determination of major and minor components in ilmenite by X-ray fluorescence spectrometry with fusion sample preparation
ZHU Zhong-ping1, LI Guo-hui*2
1. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083,China; 2.Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
Abstract：The glass fusion piece of sample was prepared on electrical heating fusion machine with Li2B4O7-LiBO2 (mass ratio of 67∶33) as mixed flux, NH4NO3 as oxidant and saturated LiBr solution as releasing agent. Consequently, a method for determination of TiO2, TFe, SiO2, A12O3, V2O5, MgO, CaO, S, P and Na2O in ilmenite was established by wavelength dispersion X-ray fluorescence spectrometry. The results showed that the optimal sample fusion conditions were as follows: sample-flux ratio (mass ratio) of 15∶1, sample fusion temperature of 1 100 ℃ and fusion time of 15 min. Under the optical experiments conditions, component content was linear to the fluorescence intensity within the content range of self-made lmenite reference samples, and correlation coefficients were between 0.995 6 and 0.999 7. After matrix effect was corrected by fundamental parameter method, the relative standard deviations (RSD, n=10) were not more than 1.3 % except for P (9.8 %). The proposed method was applied to the determination of components in ilmenite actual samples, and the results were consistent with those obtained by wet method.
朱忠平, 李国会. 熔融制样-X射线荧光光谱法测定钛铁矿中主次组分[J]. 冶金分析, 2013, 33(6): 32-36.
ZHU Zhong-ping, LI Guo-hui. Determination of major and minor components in ilmenite by X-ray fluorescence spectrometry with fusion sample preparation. , 2013, 33(6): 32-36.
