某含碳金矿选矿试验研究及工业实践  

Experimental study on the beneficiation of a carbonaceous gold ore and its industrial practice

作　　者：孙大勇 李杰 祁忠旭 朱志伟[1] 徐世红 马鹏程 Sun Dayong;Li Jie;Qi Zhongxu;Zhu Zhiwei;Xu Shihong;Ma Pengcheng(Changsha Institute of Mining Research Co.,Ltd.;School of Minerals Processing and Bioengineering,Central South University;Shandong Zhaojin Technology Co.,Ltd.)

机构地区：[1]长沙矿山研究院有限责任公司 [2]中南大学资源加工与生物工程学院 [3]山东招金科技有限公司

出　　处：《黄金》2025年第2期34-39,共6页Gold

基　　金：“十四五”国家重点研发计划项目(2022YFC2905103)。

摘　　要：针对某含碳金矿进行了深入的工艺矿物学分析,揭示了影响选矿效率的关键因素。通过选矿试验,成功降低了磨矿细度,并选择了一种高效的碳抑制剂,有效解决了有机碳对金浮选过程的干扰问题。在原矿金品位1.84 g/t的条件下,通过实验室全流程闭路试验,获得了金精矿金品位37.81 g/t、金回收率91.20%的优异指标。基于小型试验结果,进一步进行了工业试验,对磨矿细度、药剂制度等工艺参数进行了优化。试验结果表明:生产指标显著提升,金精矿金加权平均品位从24.31 g/t提高至40.25 g/t,金加权平均回收率从88.02%提高至91.42%。此外,磨矿细度的降低显著减少了生产成本。An in⁃depth process mineralogical analysis of a carbonaceous gold ore was conducted,identifying key factors affecting beneficiation efficiency.With the beneficiation tests,the grinding fineness was successfully reduced,and an efficient carbon inhibitor was selected,effectively mitigating the interference of organic carbon in the gold flotation process.Under the condition of a raw ore gold grade of 1.84 g/t,the whole⁃process closed⁃circuit test achieved outstanding indices with a gold concentrate grade of 37.81 g/t and a gold recovery rate of 91.20%.Based on the small⁃scale test results,industrial⁃scale trials were conducted to optimize process parameters,including grinding fineness and reagent regime.The test results demonstrated significant improvements in production indices,with the weighted average gold grade in the concentrate increasing from 24.31 g/t to 40.25 g/t and the weighted average gold recovery rate rising from 88.02%to 91.42%.Moreover,the reduction in grinding fineness substantially lowered production costs.

关 键 词：含碳金矿 有机碳 细度 抑制剂 生产成本 工业实践 

分 类 号：TD953[矿业工程—选矿]