【摘要】 采用普通X射线荧光光谱仪观察了经不同方式保存的铜精矿样品的SKα谱、SKβ伴线谱的谱峰位置和谱线形状,以及(SKαSKβ) ,(CuLαCuKα)和(FeLαFeKα)的谱线强度比率,根据这些谱线及谱线强度比率存在的一些变化来推断,铜精矿中的硫、铜、铁的化学态在储存过程中发生了变化。研究表明,主要矿相为黄铜矿(含有少量黄铁矿)的铜精矿样品储存2年后,发生了较明显的氧化,有部分S2 - ,Cu+ 和黄铁矿中的Fe2 + 被氧化为高价态,硫原子与氧原子相结合。样品的保存方式对样品的氧化程度有很大影响。更多还原

【Abstract】 The peak position and line shape of S K_α, S K_β satellite line, and the ratio of (S K_α/S K_β), (Cu L_α/Cu K_α), and (Fe L_α/Fe K_α) of copper concentrate samples with different depositing m ethods were determined by a conventional X-ray fluorescence spectrometer. It is concluded that the valence of S, Cu and Fe changed during depositing in accorda nce with the changes of the lines. Copper concentrate sample(main mine phase i s chalcopyrite, containing a little pyrite) was oxidized apparently after 2 year s depositing. Part of S 2-, Cu+ and Fe 2+ in the sample were oxidiz ed t o high valence, and the sulphur atom combined with oxygen atom. The oxidation of the sample was influenced markedly by the storing method.更多还原