氨离子对水钴矿硫化浮选的影响及其机理  

Effect of ammonia on sulfidization flotation of heterogenite and its mechanism

作　　者：张国范[1,2] 高永强 王梦涛 Guo-fan ZHANG;Yong-qiang GAO;Meng-tao WANG(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources,Central South University,Changsha 410083,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]中南大学战略含钙矿物清洁高效利用湖南省重点实验室,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2024年第4期1275-1287,共13页中国有色金属学报（英文版）

基　　金：the support from the National Key Research and Development Program of China(No.2022YFC2904601)。

摘　　要：引入氨离子强化主要的氧化钴矿物(水钴矿)的硫化,使其浮选回收率从不到20%显著提高到70%以上。微浮选和傅立叶变换红外分析表明,氨离子增强黄药的吸附强度,从而提高水钴矿的浮选回收率。Zeta电位、ICPOES和XPS测试进一步表明,水钴矿表面的钴可通过形成氨配合物而转移到液相中,从而增加矿物表面的硫吸附位点,促进硫化。这项研究将有助于更好地理解水钴矿的浮选行为,并为高效回收氧化钴矿提供有价值的参考。Ammonium ion was introduced to enhance the sulfidization of heterogenite,the main cobalt oxide mineral.The flotation recovery was significantly improved from less than 20% to over 70%.Micro flotation and FT-IR analyses indicated that ammonium ions enhanced the adsorption intensity of xanthate and improved the flotation recovery of heterogenite.Zeta potential,ICP-OES,and XPS tests further illustrated that cobalt on the surface of heterogenite was transferred to the liquid phase by forming ammonia complexes,thereby increasing the sulfur adsorption sites on the mineral surface and promoting sulfidization.This study will contribute to a better understanding of the flotation behavior of heterogenite and provide a valuable reference for the efficient recovery of cobalt oxide ores.

关 键 词：水钴矿 氨离子活化 硫化浮选 氧化钴矿 

分 类 号：TD954[矿业工程—选矿] TD923