黄金科学技术 ›› 2022, Vol. 30 ›› Issue (3): 470-482.doi: 10.11872/j.issn.1005-2518.2022.03.140
• 采选技术与矿山管理 • 上一篇
孙百川1,2(),杨瑞东1,2(),郑禄林1,3,陈军1,2,任海利1,4,高军波1,2,程伟1,3
Baichuan SUN1,2(),Ruidong YANG1,2(),Lulin ZHENG1,3,Jun CHEN1,2,Haili REN1,4,Junbo GAO1,2,Wei CHENG1,3
摘要:
黔西南地区是我国卡林型金矿主要产区之一,已有几十年的开采历史,随着金矿的开采,产生了大量的尾矿资源。为了解黔西南金矿尾矿(渣)资源现状,运用地质块段法、矿物学和地球化学等方法对贞丰—晴隆—安龙地区5个典型金矿尾矿(渣)中金含量、赋存状态及周围环境进行了调查。结果表明:卡林型尾矿(渣)中金以包裹金状态赋存在黄铁矿中,红土型尾矿中金以游离态赋存在铁钛氧化物中。水银洞和烂泥沟金矿尾矿中的金品位超过工业品位,具有二次提金的潜力。同时,对紫马和老万场2个尾矿库周边的土壤、植物和水质进行采样测试,发现样品中的Cd、Hg和As严重超标,对环境有一定的危害。因此,对于未达到工业品位且对环境有影响的黄金尾矿,建议进行复垦种植、采矿充填或加工成建材,这样不仅实现了尾矿(渣)的减量化处理,而且减少了其对周围环境的危害。
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