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
张国范 1高永强 2王梦涛2
作者信息
- 1. 中南大学资源加工与生物工程学院,长沙 410083;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
- 2. 中南大学资源加工与生物工程学院,长沙 410083
- 折叠
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、ICP-OES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.
Abstract
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Key words
heterogenite/ammonium activity/sulfidization flotation/cobalt oxide ore引用本文复制引用
基金项目
国家重点研发计划(2022YFC2904601)
出版年
2024
NETL
NSTL
维普
万方数据