东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (9): 1268-1272.DOI: 10.12068/j.issn.1005-3026.2019.09.010

• 材料与冶金 • 上一篇    下一篇

海南抱伦金矿工艺矿物学研究

陈桥1, 佟琳琳1, 陈贵民2, 杨洪英1   

  1. (1. 东北大学 冶金学院, 辽宁 沈阳110819; 2. 海南山金矿业有限公司, 海南 乐东572531)
  • 收稿日期:2018-09-05 修回日期:2018-09-05 出版日期:2019-09-15 发布日期:2019-09-17
  • 通讯作者: 陈桥
  • 作者简介:陈桥(1993-),男,甘肃白银人,东北大学博士研究生; 杨洪英(1960-),女,河北张家口人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(U1608254).

Process Mineralogy of Baolun Gold Mine in Hainan Province

CHEN Qiao1, TONG Lin-lin1, CHEN Gui-min2, YANG Hong-ying1   

  1. 1. School of Metallurgy, Northeastern University, Shenyang 110819, China; 2. Hainan Shandong Gold Mining Co., Ltd., Ledong 572531, China.
  • Received:2018-09-05 Revised:2018-09-05 Online:2019-09-15 Published:2019-09-17
  • Contact: TONG Lin-lin
  • About author:-
  • Supported by:
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摘要: 采用化学分析、X射线衍射、光学显微镜及扫描电子显微镜分析等检测技术,对抱伦金矿原矿石进行工艺矿物学研究,为选矿工艺的选择提供理论依据.结果表明:该矿石含金10.1g·t-1,含硫0.65%,主要脉石矿物为石英和白云母,属低硫石英脉型金矿.矿石中的金矿物主要为自然金,质量分数为90.58%.金矿物粒度范围广,巨粒金(>300μm)、粗粒金(74~300μm)、中粒金(37~74μm)、细粒金(10~37μm)及微粒金(0.10~10μm)的质量分数分别为3.84%,28.85%,18.04%,23.52%和25.75%.金矿物在矿石中的赋存状态为包裹金、粒间金和裂隙金,质量分数分别为48.37%,43.24%和 8.39%.在工艺矿物学研究的基础上,提出多段磨矿配合尼尔森重选-浮选的选矿工艺流程.

关键词: 石英脉型金矿, 工艺矿物学, 金矿物, 粒度分布, 赋存状态

Abstract: In this work, the characterization of process mineralogy of the gold ore from Baolun gold mine was studied through chemical analysis, X-ray diffraction, optical microscope and scanning electron microscope analysis. That can provide a theoretical basis and guideline to select ore dressing process. The results show that the Au and S contents of the ore are 10.1g·t-1 and 0.65%, respectively, and the main gangue minerals are quartz and muscovite. The gold minerals in the ore are mainly native gold with the relative content of 90.58%. The particle size range of gold mineral is wide, and the contents of giant-grained gold(>300μm), coarse-grained gold(74~300μm), medium-grained gold(37~74μm), fine-grained gold(10~37μm)and micro-grained gold(0.10~10μm)are 3.84%, 28.85%, 18.04%, 23.52% and 25.75%, respectively. The occurrence state of gold minerals in the ore is wrapped by gold, intergranular gold and fissure gold, the content of which accounts for 48.37%, 43.24% and 8.39%, respectively. Based on the researches of process mineralogy, a Knelson gravity separation-flotation technology cooperated with multi-stage grinding process is proposed.

Key words: quartz-vein-type gold deposits, process mineralogy, gold mineral, size distribution, occurrence state

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