A novel sulfidization system for enhancing hemimorphite flotation through Cu/Pb binary metal ions  

作　　者：Qicheng Feng Yingchao Zhang Ga Zhang Guang Han Wenjuan Zhao 

机构地区：[1]State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China

出　　处：《International Journal of Mining Science and Technology》2024年第12期1741-1752,共12页矿业科学技术学报（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.52304291 and 52264026);Yunnan Fundamental Research Projects(No.202301AW070018).

摘　　要：The low reactivity of hemimorphite surfaces hinders the effective action of sulfidizing agents and xanthate,resulting in unsatisfactory flotation performance.To enhance the surface reactivity of hemi-morphite with sulfidizing agents and xanthate,Cu/Pb binary metal ions were introduced into the sul-fidization flotation system to enhance the sulfidization process and thereby promote hemimorphite flotation.The flotation results demonstrated a remarkable improvement in the hemimorphite flotation recovery when Cu/Pb binary metal ions were added prior to sulfidization.The flotation recovery of hemi-morphite increased from less than 5%to over 80%.After strengthening the sulfidization of hemimorphite with Cu/Pb binary metal ions,the mineral surface formed multicomponent sulfide products composed of zinc,copper,and lead sulfide.The reactivity of the copper-lead sulfide components exceeds that of the zinc sulfide component;thus,the enhancement by Cu/Pb binary metal ions not only increases the content of sulfide products on the hemimorphite surface but also augments their reactivity.Contact angle and adsorption experiments indicated that after enhanced sulfidization with Cu/Pb binary metal ions,the hemimorphite surface adsorbed a greater amount of xanthate,significantly increasing the mineral sur-face hydrophobicity.Consequently,the enhanced sulfidization by Cu/Pb binary metal ions effectively improved the flotation behavior of hemimorphite,presenting an innovative sulfidization system for the flotation recovery of zinc silicate minerals in zinc oxide ores.

关 键 词：HEMIMORPHITE Enhanced sulfidization Cu/Pb binary metal ions FLOTATION 

分 类 号：TD923[矿业工程—选矿]