某含钛矿石中钛的赋存状态研究

为研究某含钛矿石是否具有综合利用价值，通过光学显微镜、X射线衍射仪、扫描电镜及矿物自动分析仪、电子探针等分析技术，对其物质组成、目的矿物嵌布特征、有价元素赋存状态等开展了系统的研究。结果表明，该矿石为含铁、钛的闪长岩类，矿石中TiO₂品位为2.27%、TFe品位为11.36%，矿石中的铁品位低，没有达到铁矿石的最低工业品位。矿石中的TiO₂主要赋存于钛铁矿及钛铁闪石中，分布率分别为40.02%和44.75%，占总分布率的84.79%；少量分布在榍石、金红石和磁铁矿（赤铁矿）中，分布率分别为7.93%、5.67%和1.59%，其中钛铁矿及金红石的矿物含量仅为1.86%和0.13%。矿石中金红石含量低，多与榍石、钛铁矿等连生，粒度微细，金红石中含有钙、铁、硅等杂质元素，这会直接影响金红石精矿的品位及回收率，采用阶磨阶选流程及重选、磁选及浮选的联合工艺，可有效回收矿石中的有用矿物。 

Study on the Occurrence State of Titanium in a Titanium-containing Ore

In order to study whether a titanium-containing ore has comprehensive utilization value, its material composition, target mineral dissemination characteristics and occurrence state of valuable elements were systematically studied by means of optical microscope, X-ray diffractometer, scanning electron microscope, mineral automatic analyzer and electron probe.The results show that the ore is a diorite containing iron and titanium. The grade of TiO₂ in the ore is 2.27% and the grade of TFe is 11.36%. The iron grade in the ore is low and does not reach the lowest industrial grade of iron ore. TiO₂ in ore mainly exists in ilmenite and ilmenite amphibole, and the distribution rates are 40.02% and 44.75% respectively, accounting for 84.79% of the total distribution rate. A small amount of TiO₂ is distributed in titanite, rutile and magnetite ( hematite ), with distribution rates of 7.93%, 5.67 % and 1.59%, respectively. The mineral content of ilmenite and rutile is only 1.86% and 0.13%. The content of rutile in the ore is very low, which is mostly associated with titanite and ilmenite, and the particle size is fine. Rutile contains calcium, iron, silicon and other impurity elements, which will directly affect the grade and recovery rate of rutile concentrate. The useful minerals in the ore can be effectively recovered by using the stage grinding stage selection process and the combined process of gravity separation, magnetic separation and flotation.