铜铵络合物强化硫化钠硫化作用的机理及应用  

Mechanism and Application of Cuprammonium-complexes in Strengthening Sulfidation of Sodium Sulfide

作　　者：胡波[1,2] 刘梦飞 李茂林[1] 陈代雄[2,4] HU Bo;LIU Mengfei;LI Maolin;CHEN Daixiong(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hunan Provincial Key Laboratory of Complex Copper Lead Zinc Associated Metal Resources Comprehensive Utilization,Hunan Research Institute of Non-ferrous Metals,Changsha 410100,China;School of Minerals Processing and Bioengineering,Central South University,Changsha 410083;State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores,Zijin Mining Group Co.,Ltd.,Shanghang 364200,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]湖南有色金属研究院复杂铜铅锌共伴生金属资源综合利用湖南省重点实验室,湖南长沙410100 [3]中南大学资源加工与生物工程学院,湖南长沙410083 [4]紫金矿业集团股份有限公司低品位难处理黄金资源综合利用国家重点实验室,福建上杭364200

出　　处：《金属矿山》2021年第4期119-124,共6页Metal Mine

基　　金：紫金矿业集团有限公司低品位难处理黄金资源综合利用国家重点实验室开放基金项目(编号:ZJKY2017(B)KFJJ004)。

摘　　要：针对孔雀石矿物亲水性强,常规硫化剂硫化作用后表面硫化膜不稳定的现状,开发出铜铵络合物作为强化硫化钠硫化作用的活化剂。试验结果表明:铜铵络合物在碱性条件下的主要作用成分为Cu(NH3)42+,该成分可起到与硫酸铵相似的活化效果,促使孔雀石表面覆盖的硫化物更均匀更致密,进而达到促进孔雀石表面疏水的效果。铜铵络合物应用于西藏玉龙氧化铜矿浮选过程时,在原矿含Cu 4.47%的条件下,经2粗2精2扫闭路浮选试验获得了氧化铜浮选精矿含铜24.14%、铜回收率82.15%的较好指标。In view of the fact that malachite has strong hydrophilicity and the surface vulcanization film is unstable after vulcanization with conventional vulcanizing agent,the cuprammonium-complexes was developed as an activator to strengthen the sulfidation of sodium sulfide.The results show that the main active component in alkaline condition is Cu(NH3)42+,which can play a similar activation effect with ammonium sulfate,and promote the surface hydrophobicity of malachite.When the cuprammonium-complexes was used in the flotation process of Yulong copper oxide mine in Tibet,the concentrate contains 24.14%Cu and the recovery of copper is 82.15%while the raw ore contains 4.47%of Cu.

关 键 词：氧化铜 硫化作用 活化浮选 铜铵络合物 

分 类 号：TD923[矿业工程—选矿]