攀西红格矿区橄辉岩型钒钛磁铁矿矿石性质研究及对选矿工艺的影响  

Properties of Olive-pyroxene Vanadium-titanium Magnetite Ore in Hongge Mining Area of Panxi Research and Influence on Mineral Processing Technology

作　　者：惠博[1] 杨耀辉[1] Hui Bo;Yang Yaohui(Institute of Multipurpose Utilization of Mineral Resources,CAGS,Research Center of Multipurpose Utilization of Metal Mineral Resources of China Geological Survey,Chengdu,Sichuan,China)

机构地区：[1]中国地质科学院矿产综合利用研究所,中国地质调查局金属矿产资源综合利用技术研究中心,四川成都610041

出　　处：《矿产综合利用》2020年第4期126-129,共4页Multipurpose Utilization of Mineral Resources

基　　金：格陵兰岛西南部稀土-铀矿产资源潜力评价(DD20190446)。

摘　　要：本文利用矿相显微镜、电感耦合等离子体发射光谱(ICP-AES)、扫描电子显微镜(SEM)、X射线能谱探针(EDS)等手段对红格矿区橄辉岩型钒钛磁铁矿进行了详细的工艺矿物学研究。原矿化学分析结果表明矿石为高钛型钒钛磁铁矿贫矿;矿物定量结果表明:含钛磁铁矿25.5%、钛铁矿11.5%、辉石45.8%、橄榄石10.5%、斜长石1%。样品为稀疏—中等浸染状矿石,普遍发育海绵陨铁结构,工艺粒度整体较粗。结合选矿试验情况以及同其他矿区的比较,本文指出红格矿区矿石性质发生了重大转变:①橄辉岩型钒钛磁铁矿中非磁性矿物斜长石含量大大降低,导致各矿物间磁性差异缩小;②辉石和橄榄石易蚀变泥化,内部普遍含有磁性包裹体,如赤铁矿和磁铁矿,磁性增强。矿石性质的转变对传统选铁和浮钛作业形成了严重挑战,新的选矿工艺呼之欲出。In this paper,the detailed process mineralogy of olivine pyroxene vanadium titanomagnetite in Hongge mining area is studied by means of mineral phase microscope,inductively coupled plasma emission spectroscopy(ICP-AES),scanning electron microscope(SEM)and X-ray energy spectrum probe(EDS).The chemical analysis results of the crude ore show that the ore is lean of high titanium vanadium titanomagnetite.Mineral quantitative results show that:titanomagnetite 25.5%,ilmenite 11.5%,pyroxene 45.8%,olivine 10.5%,plagioclase 1%.The sample is sparse-medium disseminated ore,with sponge siderite structure generally developed,and the process grain size is relatively coarse as a whole.Based on the mineral processing experiments and the comparison with other mining areas,this paper points out that the ore properties in Hongge mining area have undergone major changes:(1)the content of plagioclase,a nonmagnetic mineral in olivine pyroxene type vanadium-titanium magnetite,has been greatly reduced,resulting in the reduction of magnetic differences among the minerals;(2)Pyroxene and olivine are easy to be altered and muddied,and they generally contain magnetic inclusions,such as hematite and magnetite,which enhance their magnetism.The change of ore properties has posed a serious challenge to the traditional iron and titanium flotation operations,and new beneficiation technologies are imminent.

关 键 词：红格矿区 橄辉岩型钒钛磁铁矿 工艺矿物学 

分 类 号：TD951[矿业工程—选矿]