硫化钠体系中异极矿表面的硫化特性及硫化产物解析  

Sulfidization performance of hemimorphite surface in sodium sulfide system andidentification of sulfidization products

作　　者：张嘎 王美丽 和永新 王涵[1,2] 丰奇成 Ga ZHANG;Mei-li WANG;Yong-xin HE;Han WANG;Qi-cheng FENG(State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Faculty of Land Resource 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;Inner Mongolia Xingye Mining Company Limited,Chifeng 024028,China)

机构地区：[1]昆明理工大学国土资源工程学院省部共建复杂有色金属资源清洁利用国家重点实验室,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 [3]内蒙古兴业矿业股份有限公司,赤峰024028

出　　处：《Transactions of Nonferrous Metals Society of China》2024年第2期629-642,共14页中国有色金属学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52264026);the Ten Thousand Talent Plans for Young Top-notch Talents of Yunnan Province,China(No.YNWR-QNBJ-2018-051).

摘　　要：通过多种分析检测方法揭示硫化钠体系中异极矿表面的硫化特性和机理,并对异极矿表面硫化产物进行分析测试。研究结果表明,硫化钠浓度对异极矿表面的硫化效果具有显著影响,即提高硫化钠浓度能促进矿浆溶液中硫组分与矿物表面反应,从而提高异极矿表面硫化产物的含量及矿物表面的疏水性。XPS和ToF-SIMS分析表明,异极矿表面的硫化产物并非单一的硫化物,而是由硫化物(S^(2−))和多硫化物(S_(n)^(2−))组成,且矿物表面多硫化物含量随硫化钠浓度的增加而增加,从而增强异极矿表面硫化产物的活性。The sulfidization performance and mechanism of hemimorphite surface in a sodium sulfide(Na_(2)S)system were revealed,and surface sulfidization products were identified through various analytical methods.The results showed that Na_(2)S concentration had a significant effect on the sulfidization of the hemimorphite surface.An increase in Na_(2)S concentration could promote the interaction between S species in the pulp and mineral surfaces,thereby increasing the content of sulfidization products and hydrophobicity of hemimorphitesurface.XPS and ToF-SIMS analyses showed that the sulfidization product was not the sole monosulfide on hemimorphite surfaces and it was composed of monosulfide(S^(2−))and polysulfide(S_(n)^(2−)).The content of polysulfide on mineral surface increased with an increase in the Na_(2)S concentration,which improves the activity of sulfidization products on hemimorphite surface.

关 键 词：硫化特性 异极矿 硫化钠浓度 硫化锌组分 多硫化物 

分 类 号：TD952[矿业工程—选矿] TD923