东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (5): 711-715.DOI: 10.12068/j.issn.1005-3026.2017.05.021

• 资源与土木工程 • 上一篇    下一篇

甘肃早子沟金矿石工艺矿物学研究

董再蒸1,2, 高鹏1,3, 张淑敏1, 韩跃新1   

  1. (1. 东北大学 资源与土木工程学院, 辽宁 沈阳110819; 2. 东北大学 新材料技术研究院, 辽宁 沈阳110819;3. 山东招金集团有限公司, 山东 招远265400)
  • 收稿日期:2015-12-18 修回日期:2015-12-18 出版日期:2017-05-15 发布日期:2017-05-11
  • 通讯作者: 董再蒸
  • 作者简介:董再蒸(1984-),男,辽宁铁岭人, 东北大学博士研究生; 韩跃新(1961-),男,内蒙古赤峰人,东北大学教授,博士生导师.
  • 基金资助:

    山东省博士后创新项目(201401004).

Process Mineralogy of Gold Ore in Zaozigou Gold Mine, Gansu Province

DONG Zai-zheng1,2, GAO Peng1,3, ZHANG Shu-min1, HAN Yue-xin1   

  1. 1.School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China; 2.Institute of Advanced Material Technology, Northeastern University, Shenyang 110819, China; 3.Shandong Zhaojin Group Co., Ltd., Zhaoyuan 265400, China.
  • Received:2015-12-18 Revised:2015-12-18 Online:2017-05-15 Published:2017-05-11
  • Contact: DONG Zai-zheng
  • About author:-
  • Supported by:

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摘要:

甘肃早子沟金矿为典型卡林型金矿,该矿含金4.09g/ t,锑0.46 %,砷0.39%,主要金属矿物有黄铁矿、毒砂、辉锑矿和褐铁矿,非金属矿物主要有石英、碳酸盐矿物和绢云母,矿石中矿物组成较复杂,但是除金及辉锑矿以外其他元素均无回收价值.矿石中的金矿物主要为自然金,相对质量分数为99.12%,除分布在脉石中的金,辉锑矿是金的重要载体.自然金粒度不均匀,经统计的颗粒全部小于0.075mm,未发现粗粒金.工艺矿物学研究表明,该矿石难于选冶的主要原因为易泥化矿物、包裹金及含砷锑等耗氰矿物较多.

关键词: 早子沟金矿石, 卡林型金矿, 工艺矿物学, 赋存状态, 嵌布特性

Abstract:

The samples collected from Zaozigou gold mine in Gansu Province can be considered as typical Carlin-type gold deposits. The Au, Sb, and As contents of the ore are 4.09g/t, 0.46% and 0.39 %, respectively. It was found that the main metallic minerals in the gold ore are pyrite, arsenopyrite, stibnite and limonite. The primary gangue minerals are quartz, carbonate minerals and sericite. Mineral composition of the ore is complex, however, gold and antimony are the only useful minerals. The gold minerals in the ore are mainly native gold with the relative content of 99.12%. In addition to gold distributed in the gangue minerals, stibnite is an important carrier of gold. Particle size of native gold is tiny less than 0.075mm and nonuniform. According to the process mineralogy research, the main reasons for the refractory of the ore are the easily argillaceous minerals, inclusion gold and containing huge amounts of minerals consuming cyanide such as arsenic antimony matter.

Key words: Zaozigou gold ores, Carlin-type gold ores, process mineralogy, occurrence state, dissemination characteristics

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