含银铜硫矿石优先浮选与混合浮选工艺对比试验  

Comparative beneficiation test of preferential and bulk flotation for silver-bearing copper-sulfur ore

作　　者：丘世澄 胡真 邱显扬 姚艳清 王成行 QIU Shi-cheng;HU Zhen;QIU Xian-yang;YAO Yan-qing;WANG Cheng-hang(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;Guangdong Institute of Resources Comprehensive Utilization,Guangzhou 510651,China;State Key Laboratory of Rare Metal Separation and Comprehensive Utilization,Guangzhou 510651,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]广东省资源综合利用研究所,广州510651 [3]稀有金属分离与综合利用国家重点实验室,广州510651

出　　处：《矿冶》2020年第1期16-21,共6页Mining And Metallurgy

基　　金：广东省科学院高端领军人才培育培养资助专项（2017GDASCX-0301）;云南省科技计划项目（2018IB028)

摘　　要：对某含银铜硫矿石进行了优先浮选与混合浮选工艺试验研究。结果显示,在磨矿细度-0.074 mm占90%条件下,采用“一次粗选—两次精选—两次扫选”的优先浮铜工艺,可获得铜品位20.17%、回收率98.41%,银品位277.9 g/t、回收率92.38%的铜精矿;经“一次粗选—两次精选—两次扫选”选硫,获得硫品位37.11%、硫回收率43.76%的硫精矿。在磨矿细度-0.074 mm占80%条件下,采用“一次粗选—三次精选—两次扫选”的铜硫混合浮选和“一次粗选-一次精选-一次扫选”铜硫分离工艺,获得铜品位20.03%、回收率93.37%,银品位259.5 g/t、回收率82.41%的铜精矿;硫精矿硫品位32.34%、硫回收率26.01%。优先浮选精矿铜、银品位及回收率均高于混合选浮工艺,且优先浮选工艺过程稳定可靠,药剂制度简单,适合生产,对类似含银铜硫矿石工艺流程的选择具有重要参考价值。The preferential flotation and bulk flotation of a silver-bearing copper-sulfur ore were carried out.The results show that under the condition of grinding fineness of-0.074 mm accounting for 90%,the copper concentrate with copper grade of 20.17%,recovery rate of 98.41%,silver grade of 277.9 g/t and recovery rate of 92.38%can be obtained twice by adopting the“one roughing,two cleaning and two scavenging”process,and the sulfur concentrate with sulfur grade of 37.11%and sulfur recovery of 43.76%can be obtained.Under the condition of grinding fineness of-0.074 mm accounting for 80%,the copper sulfur bulk floatation process of"one roughing,three cleaning,two scavenging"and the copper sulfur separation process of"one roughing,one cleaning,one scavenging"were used to obtain the copper concentrate with copper grade of 20.03%,recovery rate of 93.37%,silver grade of 259.5 g/t and recovery rate of 82.41%,sulfur grade of 32.34%and sulfur recovery rate of 26.01%.The grade and recovery rate of copper and silver in the fine flotation concentrate are higher than those in the mixed flotation process,and the process of the fine flotation process is stable and reliable,the reagent system is simple,and it is suitable for production,which has important reference value for the selection of similar process flow of silver bearing copper sulfur ore.

关 键 词：铜硫优先浮选 铜硫混合浮选 含银铜硫矿石 

分 类 号：TD954[矿业工程—选矿]