硫化铜矿快速-分支浮选新工艺探索  

Exploration of a new rapid branch flotation process for copper sulfide

作　　者：解子花 魏志聪[1,2] 李梦宇 刘洋[1,2] 环艳[1,2] 瞿俊男 XIE Zihua;WEI Zhicong;LI Mengyu;LIU Yang;HUAN Yan;QU Junnan(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]昆明理工大学云南省战略金属矿产资源绿色分离与富集重点实验室,昆明650093

出　　处：《矿冶》2024年第3期399-408,共10页Mining And Metallurgy

基　　金：云南省重大科技专项(202202AG050015)。

摘　　要：以云南思茅大平掌铜矿为研究对象,针对铜硫浮选分离工艺中存在药耗大、能耗高和浮选指标不理想等问题,采用分支浮选的方法浮选该铜矿。在对该矿工艺矿物学分析的基础上,对比研究了单支浮选和分支浮选工艺的浮选效果,并重点研究了快速-分支浮选联合工艺处理该矿的浮选效果。结果表明,目的矿物黄铜矿嵌布粒度较粗且与黄铁矿致密共生、连生。磨矿细度为-0.074 mm含量占比为70%时,大部分黄铜矿物得以单体解离,满足铜矿石选别工艺要求。分支浮选流程可有效提高精矿品位,技术优势明显,其中“快速-分支”联合浮选新工艺的技术指标最优,实现了大平掌硫化铜矿的高效回收和“增质降耗”。与常规单支浮选工艺指标相比,“快速-分支”浮选新工艺在保证铜回收率稳定的情况下可显著降低复合黄药和起泡剂DEP的用量,二者用量分别减少12%和31%左右,此时铜品位却有1.45个百分点的提升。在贵金属综合回收方面,新工艺对金银的回收同样存在明显的提升效果,金和银品位分别提高0.18和9.40个百分点,回收率分别提高3.01和13.97个百分点。Focusing on the Dapingzhang copper mine in Simao,Yunnan,this study addresses the issues of high reagent consumption,high energy consumption,and unsatisfactory flotation indicators in the copper-sulfur flotation separation process by adopting the branch flotation method.Based on the mineralogical analysis of the ore,a comparative study was conducted on the flotation effects of single-branch flotation and multi-branch flotation processes,focusing on the flotation effects of the combined“rapid-branch”flotation process.The results indicate that the Dapingzhang copper mine in Yunnan is a sulfide copper mine,where the target mineral chalcopyrite has a coarser particle size and is closely coexisting and connected with pyrite.When the grinding fineness is-0.074 mm with 70%passing,most of the chalcopyrite minerals are liberated,meeting the requirements of the copper ore selection process.With obvious technical advantages,the multi-branch flotation process can effectively improve the concentrate grade.The“rapid-branch”combined flotation new process has the best technical indicators,achieving efficient recovery and“quality improvement and consumption reduction”for the Dapingzhang sulfide copper mine.Compared with the conventional single-branch flotation process indicators,the“rapid-branch”flotation new process can significantly reduce the dosage of composite yellow medicine and foaming agent DEP while ensuring a stable copper recovery rate.The dosage of both can be reduced by about 12%and 31%,respectively.At this time,the copper grade has increased by 1.45 percentage points.In terms of comprehensive recovery of precious metals,the new process also significantly improves the recovery of gold and silver,with gold and silver grades increasing by 0.18%and 9.40%,respectively,and recovery rates rising for 3.01%and 13.97%,respectively.

关 键 词：硫化铜矿 铜硫分离 单支浮选 分支浮选 快速浮选 快速-分支浮选 

分 类 号：TD92[矿业工程—选矿] TD952