攀西太和钒钛磁铁矿中钴的分布规律及赋存状态

Distribution Pattern and Occurrence State of Cobalt in Panxi Taihe Vanadium-titanium Magnetite

这是一篇工艺矿物学领域的论文。钴是重要的战略金属,主要以共-伴生元素的形式分布于金属矿床中。攀西地区的钒钛磁铁矿矿床是我国最大的钒钛铁资源基地,其矿床中伴生了大量的钴资源,但富钴矿石中钴在矿物相之间的分布规律及微观的赋存状态还未被查明。本文选择攀西地区太和钒钛磁铁矿矿床作为研究对象,利用化学分析、光学显微镜、扫描电镜(SEM-BSE)、X射线衍射分析(XRD)、高级矿物鉴定和表征系统(AMICS)、电子探针(EPMA)等分析技术对矿床中典型的富钴矿石进行了化学成分、矿物组成以及Co元素在不同矿物间分布规律及赋存状态进行了研究,研究结果表明富钴样品矿物中硫化物具有较高的钴含量,而铁钛氧化物中钴含量较低,其他矿物中几乎不含有钴,钴的分布规律表明其主要分布于硫化物中,少量分布于铁钛氧化物以及脉石矿物中。样品中钴元素具有独立矿物-硫钴镍矿和类质同象两种赋存状态。研究结果为该地区钴资源的综合利用提供矿物学依据。

This is an article in the field of process mineralogy.Cobalt is a strategic metal primarily found as an associated element in metal deposits.The Panxi region's vanadium-titanium magnetite deposit,the largest of its kind in China,also contains significant cobalt resources.Yet,the distribution and microscopic occurrence of cobalt within the mineral phases of cobalt-rich ores remain unexplored.This paper focuses on the Taihe vanadium-titanium magnetite deposit in Panxi area as the research object,and uses chemical analysis,optical microscopy,scanning electron microscopy(SEM-BSE),X-ray diffraction analysis(XRD),advanced mineral identification and characterization system(AMICS),electron probe microscopy(EPMA)and other analytical techniques to study the chemical composition,mineral composition and distribution law and occurrence state of Co element in different minerals of typical cobalt-rich ores in the deposit.The research results show that the sulfide in the cobalt-rich sample mineral has a higher cobalt content,while the cobalt content in the iron-titanium oxide is lower,and other minerals contain almost no cobalt.The distribution law of cobalt shows that it is mainly distributed in sulfides,and a small amount is distributed in iron-titanium oxides and gangue minerals.The cobalt element in the sample has two occurrence states:independent mineral-sulfur cobalt nickel ores and isomorphous.The research results provide a mineralogical foundation for the comprehensive utilization of cobalt resources in the area.