摘要
采用矿物自动检测仪(MLA)、扫描电镜能谱仪(EDS)、X射线荧光光谱仪(AxiosmAX)等分析技术和光学显微镜(OM)观察,对国外某钒钛铁矿进行了系统的工艺矿物学研究。结果表明,本矿石为深度蚀变氧化矿,包含了从原生到氧化带的一系列矿物,铁矿物为主要赤铁矿,少量磁铁矿和磁赤铁矿,钒主要赋存于铁矿物中;钛矿物主要为钛铁矿和蚀变钛铁矿。铁矿物与钛矿物嵌布关系十分紧密,难以磨矿解离。在工艺矿物学研究基础上,采用磁选回收工艺,原矿经弱磁选得到了Fe、V_(2)O_(5)、TiO_(2)品位分别为60.28%、1.06%、9.85%,回收率分别为7.98%、8.32%、4.05%的含钒铁精矿;弱磁选尾矿经强磁选得到较高品位的钛铁精矿,Fe、V2O5、TiO2品位分别为49.42%、0.82%、16.46%,回收率分别为78.52%、77.23%、81.19%,该精矿可作为进一步提取钒、钛、铁的原料。
Multiple analytical techniques, including mineral liberation analyzer(MLA), energy dispersive spectrometer(EDS) of scanning electron microscope, and X-ray fluorescence spectrometer(Axiosm AX), and optical microscope(OM) have been used to systematically study the process mineralogy of deeply oxidized ores from an oversea V-Ti iron deposit in this paper. The results show that the ore which is deeply oxidized contains a series of minerals from primary to oxidized zones;The iron minerals, in which vanadium is mainly contained, include dominant hematite, and minor magnetite and maghemite. The titanium minerals are mainly ilmenite and altered ilmenite. Iron minerals and titanium minerals are closely embedded in each other, thus they are hardly liberated by the grinding of ores. The magnetic separation recovery process test for recovering Fe, V2O5 and TiO2 from ores were conducted on the basis of the study of process mineralogy. The V-bearing iron concentrate recovered from ores by using the weak magnetic separation process has Fe, V_(2)O_(5), and TiO_(2) grades of 60.28%, 1.06%, and 9.85%, respectively, with the recovery rates of 7.98% for Fe, 8.32% for V2O5, 4.05% for TiO2, respectively.. Meanwhile, the Ti-Fe concentrate recovered from tailings of the weak magnetic separation process by using the strong magnetic separation process has Fe grade of 49.42%, V_(2)O_(5) grade of 0.82%, and TiO2 grade of 16.46%, respectively, with the recovery rates of 78.52% for Fe, 77.23% for V2O5, and 81.19% for TiO2, respectively. This Ti-Fe concentrate could be used as crude material for the further extraction of vanadium, titanium, and iron.
作者
刘超
洪秋阳
陈志强
刘勇
刘牡丹
吕昊子
LIU Chao;HONG Qiu-yang;CHEN Zhi-qiang;LIU Yong;LIU Mu-dan;LYU Hao-zi(Guangdong Institute of Resource Comprehensive Utilization,State Key Laboratory of Rare Metals Separation and Comprehensive Utilization Guangzhou,Guangdong Province key Laboratory of Mineral Resource and Comprehensive Utilization,Guangzhou 510650,China)
出处
《矿物学报》
CAS
CSCD
北大核心
2021年第3期277-286,共10页
Acta Mineralogica Sinica
基金
广东省矿产资源开发与综合利用重点实验室开放运行基金(编号:2017B030314046)
广州市科技创新基金(编号:201807010014)。
关键词
钒钛铁矿
深度蚀变氧化
工艺矿物学
磁选回收
V-Ti iron ore
deeply altered and oxidized
process mineralogy
Magnetic separation for recovering
作者简介
第一作者:刘超,男,1988年,工程师,硕士,主要从事选矿工艺研究.E-mail:courage0128@163.com;通讯作者:洪秋阳,E-mail:315265205@qq.com。
