Effect of dissolved components of malachite and calcite on surface properties and flotation behavior  

作　　者：Zhihao Shen Shuming Wen Han Wang Yongchao Miao Xiao Wang Shengbing Meng Qicheng Feng 

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 [2]Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources,Kunming University of Science and Technology,Kunming 650093,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2023年第7期1297-1309,共13页矿物冶金与材料学报（英文版）

基　　金：financially supported by Yunnan Fundamental Research Projects (No.202101BE070001-009);National Natural Science Foundation of China (No.51464029)。

摘　　要：In general,malachite is recovered via sulfidization–xanthate flotation,although many unsatisfactory flotation indexes are frequently obtained as a result of the presence of associated calcite.This phenomenon occurs because the dissolved components of malachite and calcite affect the flotation behavior of both minerals.In this study,the effect of the dissolved components derived from malachite and calcite on the flotation behavior and surface characteristics of both minerals was investigated.Flotation tests indicated that malachite recovery decreased when the calcite supernatant was introduced,while the presence of the malachite supernatant increased the recovery of calcite.Dissolution and adsorption tests,along with zeta potential measurements,X-ray photoelectron spectroscopy,Fourier transform infrared spectrometry,and timeof-flight secondary ion mass spectrometry demonstrated that the Ca species in the calcite supernatant were adsorbed on the malachite surface,which hindered the interaction of Na2S with malachite,thereby resulting in the insufficient adsorption of sodium isoamyl xanthate(NaIX)on the surface of malachite.By contrast,the Cu species in the malachite supernatant were adsorbed on the calcite surface,and they provided active sites for the subsequent adsorption of Na_(2)S and NaIX.

关 键 词：MALACHITE CALCITE dissolved components sulfidization-xanthate flotation surface properties 

分 类 号：TD952[矿业工程—选矿] TD923