Study on the Compositions and Structure Characteristics of a Vanadium-titanium Magnetite from Panxi Region
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摘要: 利用化学分析、光谱分析、X射线衍射物相定性分析、矿相显微镜、扫描电镜、MLA工艺矿物参数自动定量分析等手段对攀西某钒钛磁铁矿的化学组成、矿物组成、结构构造特征进行系统研究。研究结果表明,矿石的化学组成主要为铁、钛、钒,其中TFe含量为31%左右,TiO2含量约为11%,V2O5含量约为0.5%,均达到了工业利用的标准,是矿石选矿回收利用的主要组分;其次为铬、锰、钴、镍、铜,是矿石中的有益伴生元素。矿石的金属矿物主要为钛磁铁矿(约43.09%~45.09%)和钛铁矿(11.67%~13.17%),可供工业上选别铁精矿和钛精矿;其次为黄铁矿、方铅矿、闪锌矿、黄铜矿等硫化物矿物,可经选矿得到硫钴精矿。矿石主要呈浸染状构造,矿物颗粒主要呈半自形-他形结构、包含结构、海绵陨铁结构、交代残余结构和固溶体分离结构。研究结果明确了该矿区矿石综合利用的物质基础,查明了矿石的结构构造特征,为矿石选矿工艺的制定提供了重要的基础资料。Abstract: The chemical analysis,spectral analysis,X-ray diffraction phase qualitative analysis,optical microscope,scanning electron microscope and MLA analysis were employed to systematically study the chemical and mineral compositions of a vanadium-titanium magnetite(V-Ti magnetite) from Panxi area in this paper.The results indicate that the V-Ti magnetite is mainly consisted of iron,titanium and vanadium,etc.,with about 31% TFe,11% Ti O2 and 0.5% V2O5 satisfying the industrial utilization standards overall.Besides the iron,titanium and vanadium all of which are the major components for utilization of this ore,a lot of beneficial associated elements(e.g.chromium,manganese,cobalt,nickel and copper,etc.) are contained in the V-Ti magnetite.The main metallic minerals in this ore are titanium-magnetite(43.09%~45.09%) and ilmenite(11.67%~13.17%) which can be used for industrial beneficiation of iron concentrate and titanium concentrate,respectively.Moreover,the V-Ti magnetite also contains some sulfide minerals such as pyrite,galena,sphalerite and chalcopyrite,etc.which can form the sulfur cobalt concentrate after beneficiation.The V-Ti magnetite is mainly of disseminated structure with subhedral-anhedral,embedded,sideronitic,metasomatic relict and solid separation textures.The results confirm the materials basis for the comprehensive utilization of this vanadium-titanium magnetite and make clear the structure characteristics of this ore,which provides important basic information for the establishment of beneficiation processes of this ore.
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