一水硬铝石型高钛铝土矿中钛的赋存状态研究

Research on the Form of Occurrence of Itanium in Diasporic Bauxite with High Tannium

本文采用常规化学分析方法以及XRD、偏光显微镜、扫描电镜等现代先进分析检测仪器对云南一水硬铝石型高钛铝土矿的化学成分、物相组成、显微形貌进行研究,并结合扫描电镜元素分布图深入分析钛的赋存状态。结果表明,该矿石为高钛高铝硅比型铝土矿,TiO_2含量高达8.23%,Al_2O_3含量58.02%,SiO_2含量6.69%,A/S为8.68;矿石还中含有一定量的铁组分,Fe2O3含量为14.51%。矿石中含钛矿物主要以锐钛矿为主,其次也存在一定量的钛铁矿和少量的板钛矿,含钛矿物以规则或不规则团块或包裹形式嵌布矿石基体中。

In this paper, the conventional chemical analysis method, XRD, polarizing microscope, scanning electron microscopy（SEM） and other modern advanced analytical instrumentation are used for the the chemical composition research, phase composition and microstructure morphology of Yunnan diasporic high titanium bauxite. At the same time, the occurrence state of titanium is analyzed by scanning electron microscope （SEM）element distribution graph. Results indicate that the ore belongs to bauxite of high titanium and high A/S. In the ore, the content of TiO2 ,A1203 ,and SiO2 is respectivly 8.23% ,58.02% and 6.69% ,and A/S is 8.68. Beyond that,the ore contains a certain amount of iron. The content of Fe2Oais 14.51%. Ti-containing mineral in the ore is mainly the form of ana- tase, followed by a certain amount of ilmenite and a small amount of plate titanium ore, and they are embedded in the substrate of ore in the form of regular or irregular clumps or inclusions.