攀西某钒钛铁精矿矿物特性及提质  

Mineral Characteristics Research and Tests of Improving Quality of Vanadium Titanium Iron Concentrate in Panxi Area

作　　者：陈福林 蔡先炎 李硕 吴宁 王志杰 Chen Fulin;Cai Xianyan;Li Shuo;Wu Ning;Wang Zhijie(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua Iron&Steel Research Institute Co.,Ltd.of Pangang Group,Sichuan,Panzhihua,China)

机构地区：[1]钒钛资源综合利用国家重点实验室,攀钢集团攀枝花钢铁研究院有限公司,四川攀枝花617000

出　　处：《矿产综合利用》2023年第3期1-6,13,共7页Multipurpose Utilization of Mineral Resources

摘　　要：这是一篇矿物加工工程领域的论文。利用筛析、偏光显微镜、X射线衍射仪、Zeiss Sigma 500扫描电子显微镜+Bruker能谱仪+AMICS自动矿物分析系统对攀西某钒钛铁精矿样品进行了矿物特性研究。样品主要脉石矿物为磁黄铁矿、粒状钛铁矿及辉石、长石等,粗细粒级TFe、S、SiO_(2)、Al_2O_(3)和MgO及脉石矿物含量有较大差异,Fe少量以钛铁矿、磁黄铁矿及非金属矿物存在,Ti主要以钛磁铁矿形式存在,钛铁矿及镁铝尖晶石以格片状、细脉状、细条带状、网格状及针状镶嵌于钛磁铁矿中,且客晶矿物粒度很细,磨矿解离、选别分离及产品后处理难度较大,物理选矿方法降低其TiO_(2)较难。采用磨矿磁选工艺可使钒钛铁精矿TFe品位提高2~3个百分点,提质本质为降低精矿中SiO_(2)、Al_2O_(3)、MgO,降幅SiO_(2)>MgO>Al_2O_(3),提质过程精矿TiO_(2)含量虽变化不大,但可使Fe/TiO_(2)由4.29提高至4.50左右,该过程Fe及V金属有一定损失,S具一定的脱除效果。This is a paper in the field of mineral processing engineering.The mineral characteristics of a vanadium titanium iron concentrate sample from Panxi were studied using sieve analysis,polarizing microscope,X-ray diffractometer,Zeiss Sigma 500 scanning electron microscope,Bruker energy spectrometer,and AMICS automatic mineral analysis system.The main gangue minerals in the sample are magnetite pyrite,granular ilmenite,pyroxene,feldspar,etc.The contents of coarse and fine products TFe,S,SiO_(2),Al_(2)O_(3),MgO,and gangue minerals are quite different.A small amount of Fe exists in ilmenite,magnetic pyrite,and non-metallic minerals.Ti mainly exists in the form of titanium magnetite.ilmenite and magnesium aluminum spinel are inlaid on the base of titanium magnetite in lamellar,veinlet,thin strip,grid,and needle shapes,The particle size of the guest crystal mineral is very fine,making it difficult to grind,separate,and post treat the product.The use of grinding magnetic separation can increase the TFe grade of vanadium titanium iron concentrate by 2-3 percentage points.The essence of the improvement is a significant decrease in the content of SiO_(2),Al_(2)O_(3),and MgO in the concentrate,with a decrease of SiO_(2)>MgO>Al_(2)O_(3).The TiO_(2) content of the concentrate does not change much during the improvement process,with Fe/TiO_(2) increasing from 4.29 to 4.50,V2O5 grade slightly increasing,and S grade slightly decreasing.

关 键 词：钒钛铁精矿 矿物特性 提质 矿物加工工程 工艺矿物学 

分 类 号：TD982[矿业工程—选矿]