攀枝花某钛精矿工艺矿物学研究  

Study on process mineralogy of a titanium concentrate from Panzhihua

作　　者：赖杨 杨耀辉[1] 惠博[1] 徐莺[1] 郑国顺 LAI Yang;YANG Yaohui;HUI Bo;XU Ying;ZHENG Guoshun(Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu 610041,Sichuan,China)

机构地区：[1]中国地质科学院矿产综合利用研究所,四川成都610041

出　　处：《钢铁钒钛》2025年第1期100-106,共7页Iron Steel Vanadium Titanium

基　　金：四川省经信厅揭榜挂帅项目(LB-SK-HT23-0334);攀西试验区第五批重大科技攻关项目(ZHS-QR-22-102);中国地质调查项目(DD20242129)。

摘　　要：以攀枝花某钛精矿为例,通过化学多元素分析、AMICS矿物自动分析、电子探针分析、X射线衍射分析、扫描电镜分析和光学显微镜鉴定等手段开展详细的工艺矿物学研究,查明该钛精矿中TiO_(2)含量为48.03%,TFe含量为33.93%,另含少量MgO、SiO_(2)、Al_(2)O_(3)、CaO等杂质组分;主要矿物为钛铁矿(91.00%),次要矿物为钛磁铁矿(1.41%),以及少量黄铁矿(0.35%),另外含有少量辉石、绿泥石、榍石、橄榄石等脉石矿物(7.24%);钛元素主要以独立矿物相形式赋存于钛铁矿、榍石中,分布率分别为99.50%、0.35%;其次以类质同象形式赋存于钛磁铁矿中,分布率为0.12%;确定该钛精矿TiO_(2)理论品位为52.09%。研究认为钛精矿中的部分钛铁矿与钛磁铁矿以固溶体分离结构紧密连生产出,通过传统的选矿手段难以有效分离剔除;钛精矿中存在少量含镁、钙、硅、铝等杂质元素的脉石矿物,这些是钛精矿品位难以提高的主要原因,应探索优化钛精矿精选工艺流程及药剂制度,有效剔除钛精矿中的脉石矿物,从而提高钛精矿品位,降低杂质含量。This study focused on a specific case-titanium concentrate from Panzhihua.Detailed process mineralogy research was conducted using chemical element analysis,AMICS,EPMA,XRD,SEM and optical microscope identification.The research reveals that the ilmenite concentrate contains 48.03%TiO_(2)and 33.93%TFe,along with small amounts of impurity components such as MgO,SiO_(2),Al_(2)O_(3) and CaO.The primary mineral present is ilmenite(91.00%),followed by titanomagnetite(1.41%),with a small percentage(7.59%)consisting of gangue minerals including pyroxene,chlorite,titanite and olivine.The titanium element primarily exists in the form of independent mineral phases in ilmenite and titanite,with distribution rates of 99.50%and 0.35%,respectively.It also occurs as isomorphism in titanomagnetite,with a distribution rate of 0.12%.The theoretical TiO_(2)grade of the titanium concentrate has been determined to be 52.09%.It is believed that part of the ilmenite and titanomagnetite in the titanium concentrate are formed by solid solution separation structures,which are difficult to effectively separate and eliminate using traditional beneficiation methods.Additionally,there are small amounts of gangue minerals containing impurity elements such as magnesium,calcium,silicon,and aluminum present in the titanium concentrate.These reasons render it challenging to enhance the grade of titanium concentrate.We ought to explore and optimize the beneficiation process for the purpose of effectively eliminating the gangue minerals within the titanium concentrate,thereby upgrading the grade of titanium concentrate and reducing the impurity content.

关 键 词：钛精矿 工艺矿物学 赋存状态 提质降杂 

分 类 号：TF823[冶金工程—有色金属冶金] TD912[矿业工程—选矿]