某含金复杂铜硫矿石低碱度浮选工艺试验研究

金属矿山 ›› 2020, Vol. 49 ›› Issue (11): 95-99.

某含金复杂铜硫矿石低碱度浮选工艺试验研究

李国栋,邱廷省,郭海宁,严华山

1. 江西理工大学资源与环境工程学院，江西赣州 341000；2. 西北矿冶研究院，甘肃白银 730900

出版日期:2020-11-15 发布日期:2020-12-22

Experimental Research on Low Alkalinity Flotation Process of Gold-bearing Complex Copper Sulfur Ore

LI Guodong,QIU Tingshen,GUO Haining,YAN Huashan

1. Faculty of Resources and Environmental Engineering， Jiangxi University of Science and Technology， Ganzhou 341000，China；2. Northwest Research Institute of Mining and Metallurgy， Baiyin 730900， China

Online:2020-11-15 Published:2020-12-22

摘要/Abstract

摘要： 某复杂含金铜硫矿石中铜、金和硫的品位分别为0.82%、1.20 g/t和11.30%，对该铜硫矿石进行详细的工艺矿物学研究，针对该矿石特点，在低碱度条件下应用铜硫优先浮选原则工艺流程。闭路试验结果表明：在磨矿细度-74 μm占85%的条件下，以氧化钙为硫铁矿抑制剂（矿浆pH值为9~10），Z-200为铜矿物捕收剂，经1次粗选、1次扫选和2次精选的铜浮选流程可获得铜品位为18.42%、铜回收为84.97%，含金15.52 g/t、金回收率为48.78%的铜精矿；浮铜尾矿再添加硫铁矿活化剂QH，以丁基黄药为捕收剂经1次粗选、1次扫选和2次精选的硫浮选流程可获得硫品位为45.42%、硫回收率为65.33%的硫精矿。金在铜精矿中有效富集，在低碱度的条件下原矿实现了有价金属的综合回收。

关键词: 含金铜硫矿, 低碱度, 铜硫优先浮选, 综合回收

Abstract: A complex gold bearing copper sulfide ore containing copper，gold and sulfur of 0.82%、1.20 g/t and 11.30%，respectively. The process mineralogy of the copper sulfur ore was studied in detail. According to the characteristics of the ore，the process flow of the principle of preferential flotation of copper and sulfur was applied under low alkalinity，the results of the closed-circuit test indicated that:under the condition of grinding fineness of -74 μm accounting for 85%，CaO as pyrite inhibitor with pulp pH value of 9~10，and Z-200 as copper mineral collector，the copper concentrate with the copper grade of 18.42%，copper recovery rate of 84.97%，gold content of 15.52 g/t and gold recovery rate of 48.78% could be obtained by one roughing，one scavenging and two cleaning copper flotation processes.Then the sulfur concentrate with sulfur grade of 45.42% and sulfur recovery rate of 65.33% could be obtained by the flotation process of one roughing，one scavenging and two cleaning with butyl xanthate as collector after adding pyrite activator QH to the copper tailings.The gold was enriched effectively in the copper concentrate and the comprehensive recovery of valuable metals was realized in the condition of low alkalinity.

Key words: gold bearing copper sulfur ore, low alkalinity, priority flotation for the copper and sulfur, comprehensive recovery

李国栋, 邱廷省, 郭海宁, 严华山. 某含金复杂铜硫矿石低碱度浮选工艺试验研究[J]. 金属矿山, 2020, 49(11): 95-99.

LI Guodong, QIU Tingshen, GUO Haining, YAN Huashan. Experimental Research on Low Alkalinity Flotation Process of Gold-bearing Complex Copper Sulfur Ore[J]. Metal Mine, 2020, 49(11): 95-99.

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