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通过光学显微镜、扫描电镜、电子探针、X射线粉晶衍射、X射线荧光光谱及差热—热重分析等手段,对四川攀枝花红格钒钛磁铁矿中钛铁矿的结构与构造、化学组成及变化规律等进行详细的矿物学特征研究。结果表明,钛铁矿与钛磁铁矿紧密共生,呈自形—半自形和它形粒状集合体填充在脉石矿物颗粒间,形成海绵陨铁和粒状镶嵌等结构。钛铁矿以主、客晶两种形式存在。钛铁矿单矿物化学成分分析Fe、Ti、Mg、V、Mn是其主要组成元素;相关性分析表明Fe、Ti、Mg、V、Al元素间相关关系密切。钛铁矿中铁的含量随着其矿物粒度的减小而增加;TiO2、MgO含量则随着钛铁矿粒度的减小而递减。研究结果对于该矿区钒钛磁铁矿中钛精矿的选、冶具有实际应用价值。
The structure and structure of ilmenite in Hongge vanadium titanomagnetite from Panzhihua, Sichuan Province were studied by means of optical microscope, scanning electron microscopy, electron probe, X-ray powder diffraction, X-ray fluorescence spectroscopy and DTA- Chemical composition and changes in law to conduct a detailed study of mineralogical characteristics. The results show that the ilmenite closely intergrowth with the titanomagnetite and is self-shaped and semi-self-shaped and its granular aggregates are filled in gangue mineral grains to form sponge meteorite and granular mosaic structures. Ilmenite main and guest crystal exist in two forms. The single mineral chemical composition analysis of ilmenite Fe, Ti, Mg, V and Mn are the main components. The correlation analysis shows that there is a close correlation between Fe, Ti, Mg, V and Al elements. The content of iron in ilmenite increases with the decreasing of its grain size. The content of TiO2 and MgO decreases with the decrease of ilmenite size. The research results have practical application value for the selection and smelting of titanium concentrates in the vanadium-titanium magnetite in this mining area.