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在X射线荧光光谱法中,控制、减小或校正基体影响是得到可靠结果的关键之一,对于基体变化比较悬殊的样品尤其如此。为准确地连续测定砂锡矿选矿产品(包括原矿、中矿、尾矿和精矿)中的锡、铁、铅,样品中加入Ba SO_4重吸收剂和H_3BO_3稀释剂,以及内标元素Sb、Co、Bi,以保持样品总质量吸收系数稳定;补偿基体效应、矿物效应和仪器漂移等影响。采用国产计算机与X射线荧光光谱仪联机处理数据。在上述基础上拟定了用于成分多变的砂锡矿选矿流程控制分析的X射线荧光光谱分析方法,可快速、准确、经济地分析含Sn0.0x—20%、Fel—60%、Pb0.x—4%的选矿产品,能很好地满足选矿工艺对分析的要
In X-ray fluorescence spectroscopy, controlling, reducing or correcting substrate effects is one of the keys to obtaining reliable results, especially for samples with more varied substrate variations. In order to accurately and continuously measure the tin, iron, lead and the samples of sand tin ore beneficiation products (including raw ore, medium ore, tailings and concentrate), Ba SO_4 reabsorbent and H_3BO_3 thinner as well as internal standard elements Sb, Co, Bi, in order to maintain the stability of the sample total mass absorption coefficient; to compensate for the effects of matrix, mineral effects and instrument drift. Using domestic computer and X-ray fluorescence spectrometer online processing data. Based on the above, the X-ray fluorescence spectrometry method for the control analysis of beneficiation process of sand and tin ore has been drafted, which can rapidly, accurately and economically analyze SnO.0x-20%, Fel-60% and Pb0. x-4% of the beneficiation products, can well meet the dressing process to the analysis