摘要
针对黑龙江某含钒超贫磁铁矿矿石,对原矿主要化学成分、金属矿物铁物相和矿石结构构造进行了分析,采用MLA、扫描电镜、电子探针等先进手段对矿物组成、主要矿物的嵌布特征进行详细研究,发现矿石中全铁含量12.40%(磁性铁占67.34%),V;O;含量0.186%,矿石中磁铁矿和钛铁矿、磁黄铁矿紧密共生,对选矿指标会产生影响。通过选矿试验研究,在磁场强度和不同磨矿细度磁选试验基础上,对铁精矿产品进行化学分析和有用成分回收情况分析,推荐最佳选矿工艺流程及指标:原矿在磨矿细度—0.074 mm占95%的条件下,经过两次磁选,获得全铁品位64.18%、回收率61.25%(磁性铁含量63.91%、回收率90.58%)的铁精矿;铁精矿中V;O;得到富集,含量为0.96%,回收率为61.08%。研究结果为该矿的开发利用提供了参考。
For a vanadium-bearing ultra-low-grade magnetite in Heilongjiang,the chemical composition,iron phase and ore structure of raw ore were analyzed,and advanced methods such as MLA,scanning electron microscope,electron probe and other advanced methods were used to analyze the mineral composition and the characteristics of the main minerals.A detailed research found that the total iron content in the raw ore was 12.40%(magnetic iron accounting for 67.34%),and the V;O;content was 0.186%.Magnetite,ilmenite,and pyrrhotite in the ore closely co-exist,which had an impact on the beneficiation indexes.Through the beneficiation tests with different magnetic field strength and different grinding fineness,the chemical analysis and recovery of useful components of iron concentrate products were analyzed,and the best beneficiation process and indexes were recommended as follows:under the condition of grinding fineness of-0.074 mm accounting for 95%,using the process of two magnetic separations,an iron concentrate with total iron content of 64.18%and recovery of 61.25%(magnetic iron content of 63.91%,recovery of 90.58%)could be obtained.V;O;in the iron concentrate was enriched with content of 0.96%and recovery of 61.08%.The research results provided a reference for the development and utilization of the mine.
作者
李亚
王英凯
牛艳萍
何章辉
LI Ya;WANG Yingkai;NIU Yanping;HE Zhanghui(Heilongjiang Provincial Research Center of Geological and Mineral Experimental Testing,Harbin 1500369 China)
出处
《有色金属（选矿部分）》
CAS
北大核心
2022年第3期108-112,共5页
Nonferrous Metals（Mineral Processing Section）
关键词
超贫磁铁矿
钒
MLA分析
电子探针
ultra-low-grade magnetite
vanadium
MLA analysis
electron probe
