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秘鲁某复杂金矿工艺矿物学及选别工艺研究

  • 作者:
  • 刘朝兴|胡泽伟|何东|宋强|谢贤
  • 作者单位:
  • 云南迪庆有色金属有限责任公司|昆明理工大学国土资源工程学院|云南华联锌铟股份有限公司|昆明理工大学国土资源工程学院|昆明理工大学国土资源工程学院
  • 基金项目:

  • 国家自然科学基金项目(52364031);昆明理工大学“双一流”科技专项(202202AG050010-4)
  • 详细信息:

  • 作者简介:
  • 刘朝兴(1985—),男,工程师,从事选矿技术研究及国内外选矿厂生产实践工作;E-mail:137954884@qq.com
  • 通讯作者:
  • 谢贤(1981—),男,教授,博士,研究方向为浮选理论与工艺、尾矿资源二次利用、矿产资源综合利用等;E-mail:89235376@qq.com
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Process mineralogy and beneficiation process study of a complex gold ore in Peru

  • English Author:
  • Yunnan Diqing Nonferrous Metals Co.,Ltd.|Faculty of Land Resources Engineering,Kunming University of Science and Technology|Yunnan Hualian Zinc & Indium Co.,Ltd.|Faculty of Land Resources Engineering,Kunming University of Science and Technology|Faculty of Land Resources Engineering,Kunming University of Science and Technology
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  • 摘要
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  • 参考文献

摘要:

随着易选金矿资源的逐渐匮乏,开发处理低品位、含硫含砷复杂金矿的高效工艺尤为关键。针对秘鲁某复杂金矿进行工艺矿物学分析,并对全浸和浸出—浮选联合工艺的处理效果进行了比较。研究结果显示:该矿石金品位为6.64 g/t,其中51.9 %的金被矿物包裹,主要载金矿物为黄铁矿和石英。在优化工艺条件下,全浸法的Au浸出率可达74.1 %,浸出渣中残留Au品位为1.72 g/t,说明回?招Ч写嵘Mü越鲈懈⊙〈恚章肥匝榛竦玫慕鹁Au品位达到21.60 g/t,Au回收率为14.47 %。采用浸出—浮选联合工艺,Au总回收率提高至88.57 %,显示出该工艺在处理复杂金矿方面的显著优势。研究结果为复杂金矿的开发提供了有效的技术参考。

关键词:

金矿;浸出;浮选;联合工艺;黄铁矿;工艺矿物学

Abstract:

As easily processed gold ore resources become increasingly scarce,developing efficient processes for low-grade,sulfur and arsenic-bearing complex gold ores is critical. This study focuses on the process mineralogy of a complex gold ore in Peru and compares the treatment effects of total leaching and a combined leaching-flotation process. Results show that the gold grade of the ore is 6.64 g/t,with 51.9 % of the gold encapsulated in minerals,primarily hosted by pyrite and quartz. Under optimized conditions,the gold leaching rate via full cyanidation reached 74.1 %,with a residual gold grade of 1.72 g/t in the leach residue,indicating room for recovery improvement. By subjecting the leach residue to flotation,closed-circuit tests achieved a gold concentrate grade of 21.60 g/t and a gold recovery of 14.47 %. The combined leaching-flotation process increased the total gold recovery to 88.57 %,demonstrating significant advantages for processing complex gold ores. These findings provide an effective technical reference for future complex gold ore development.

Keywords:

gold ore;leaching;flotation;combined process;pyrite;process mineralogy