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现代矿业 ›› 2022, Vol. 38 ›› Issue (07): 127-.

• 矿物加工工程 • 上一篇    下一篇

利比里亚某铁矿石工艺矿物学研究

张永1,2 林小凤1,2 刘军1,2   

  1. 1. 中钢集团马鞍山矿山研究总院股份有限公司; 2. 国家金属矿山固体废物处理与处置工程技术研究中心
  • 出版日期:2022-07-25 发布日期:2023-06-09
  • 基金资助:
    十四五国家重点研发计划重点专项(编号:2021YFC2902400);安徽省重点研究与开发计划面上攻关项目(编号:202104a07020012)。

Study on Process Mineralogy of an Iron Ore in Liberia

ZHANG Yong1,2 LIN Xiaofeng1,2 LIU Jun1,2   

  1. 1. Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.; 2. National Research Center for Solid Waste Treatment and Disposal Engineering of Metal Mines
  • Online:2022-07-25 Published:2023-06-09

摘要: 为查明矿石性质对选矿指标的影响,对国外某铁矿石采用化学多元素分析、物相分 析和MLA等分析测试方法,研究了矿石的矿物组成、含量及主要矿物的嵌布特征等工艺矿物学性 质。工艺矿物学研究结果表明:铁为矿石中的主要目的元素,铁品位为39.09%,主要赋存于磁铁 矿、褐铁矿和赤铁矿中;石英为主要脉石矿物,其次为辉石、石榴子石等硅酸盐矿物,其他矿物含量 相对较少;有用铁矿物磁铁矿和褐铁矿的工艺粒度呈粗粒分布,赤铁矿的嵌布粒度较细,主要脉石 矿物石英结晶粒度较粗。根据工艺矿物学性质,建议采用阶段磨选、磁重联合选矿工艺。

关键词: 铁矿石, 工艺矿物学, 嵌布特征, 粒度, 解离

Abstract: In order to find out the influence of ore properties on mineral processing indexes,the min⁃ eral composition,content and distribution characteristics of main minerals of a foreign iron ore were stud⁃ ied by chemical multi-element analysis,phase analysis and MLA analysis.The process mineralogy results show that Fe is the main target element in the ore with a grade of 39.09%,mainly occurring in magnetite,li⁃ monite and hematite.Quartz is the main gangue mineral,followed by pyroxene,garnet and other silicate minerals,and the content of other minerals is relatively low. The process particle size of useful iron miner⁃ als magnetite and limonite is coarse-grained,the disseminated particle size of hematite is fine,and the crys⁃ tal particle size of main gangue mineral quartz is coarse-grained.According to the mineralogy properties of the process,it is suggested to adopt stage grinding and magnetic-gravity combined beneficiation processing.

Key words: iron ore, process mineralogy, dissemination characteristics, size, dissociation