Effect of pyrite content on chalcopyrite flotation under different regrinding conditions  

作　　者：Zejun Wang Qing Shi Guofan Zhang Yuxuan Zhu Binbin Li 

机构地区：[1]School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China [2]Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources,Central South University,Changsha 410083,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第1期49-57,共9页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Key Research and Development Plan of China(No.2022YFC2904603);the National Natural Science Foundation of China(No.52174268)。

摘　　要：This study aimed to investigate the effect of varying pyrite(Py)content on copper(Cu)in the presence of different regrinding conditions,which were altered using different types of grinding media:iron,ceramic balls,and their mixture,followed by flotation in the cleaner stage.The flotation performance of rough Cu concentrate can be improved by changing the regrinding conditions based on the Py content.Scanning electron microscopy,X-ray spectrometry,ethylenediaminetetraacetic acid disodium salt extraction,and X-ray photoelectron spectroscopy studies illustrated that when the Py content was high,the use of iron media in regrinding promoted the generation of hydrophilic Fe OOH on the surface of Py and improved the Cu grade.The ceramic medium with a low Py content prevented excessive Fe OOH from covering the surface of chalcopyrite(Cpy).Electrochemical studies further showed that the galvanic corrosion current of Cpy-Py increased with the addition of Py and became stronger with the participation of iron media.

关 键 词：CHALCOPYRITE regrinding media PYRITE galvanic corrosion FLOTATION 

分 类 号：TD952[矿业工程—选矿] TD923