某含铜金黄铁矿综合回收试验研究
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摘要
某含铜金黄铁矿中有用元素种类较多,其中铜硫等矿物分布极不均匀,且嵌布粒度较细,黄铜矿主要分布于黄铁矿的次生微细裂隙中,或存在于胶状黄铁矿中,回收困难。为有效回收矿石中的有用元素,研究采用铜硫混合浮选—粗精矿再磨—铜硫分离的原则流程,最终可获得品位为19.66%、回收率为67.62%的铜精矿,其中金的品位为16.30g/t、回收率为17.79%;还可获得品位为49.48%、回收率为80.67%的硫精矿,其中金的品位为1.27g/t、回收率为53.48%;对浮选尾矿进行磁选,可得到品位为62.30%、回收率为40.29%的铁精矿。本研究可实现矿石中Cu、S、Au和Fe等元素的有效回收,对同类矿石的综合回收有重要的参考意义。
There are many kinds of useful elements in a pyrite containing copper and gold and its valuable elements of copper,sulfur and other minerals are unevenly distributed and have fine dissemination size.Chalcopyrite is mainly distributed in the secondary fine fissures of pyrite or in the colloidal pyrite and difficult to be recovered.In order to effectively recover valuable elements in the ore,aprinciple flowsheet of mixed flotation of Cu-S,crude concentrate regrinding and Cu-S separation was introduced and a copper concentrate with 19.66% grade and recovery rate of67.62%was obtained with its gold content and recovery rate being 16.30 g/t and 17.79% respectively.A sulphur concentrate with 49.48% grade and recovery rate of 80.67% was obtained with its gold content and recovery rate being 1.27 g/t and 53.48% respectively.An iron concentrate with 62.30% grade and recovery rate of 40.29%could be obtained by a magnetic separation from flotation tailings.The effective recovery of Cu,S,Au and Fe in the ore could be realized and this research has an important reference significance for the comprehensive recovery of multi-elements in similar ores.
There are many kinds of useful elements in a pyrite containing copper and gold and its valuable elements of copper,sulfur and other minerals are unevenly distributed and have fine dissemination size.Chalcopyrite is mainly distributed in the secondary fine fissures of pyrite or in the colloidal pyrite and difficult to be recovered.In order to effectively recover valuable elements in the ore,aprinciple flowsheet of mixed flotation of Cu-S,crude concentrate regrinding and Cu-S separation was introduced and a copper concentrate with 19.66% grade and recovery rate of67.62%was obtained with its gold content and recovery rate being 16.30 g/t and 17.79% respectively.A sulphur concentrate with 49.48% grade and recovery rate of 80.67% was obtained with its gold content and recovery rate being 1.27 g/t and 53.48% respectively.An iron concentrate with 62.30% grade and recovery rate of 40.29%could be obtained by a magnetic separation from flotation tailings.The effective recovery of Cu,S,Au and Fe in the ore could be realized and this research has an important reference significance for the comprehensive recovery of multi-elements in similar ores.
引文
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[4]张群,唐云.贵州某硫铁矿浮选工艺研究[J].化工矿物与加工,2012,41(10):1-3.
[5]杨久流.尾矿中有价矿产资源的综合回收与利用[J].有色金属工程,2002,54(3):86-89.
[6]王丰雨,赵明,钟森林,等.某硫铁矿浮选试验研究[J].化工矿物与加工,2016,45(2):16-18.
[7]王宇斌,卫亚儒,谢建宏,等.某难选铜铁矿综合利用工艺研究[J].现代矿业,2009,25(9):33-35.