细粒级孔雀石浮选矿物表面的分段硫化机制研究  

Study on the Staged Sulfidation Mechanism of Mineral Surface in Flotation of Fine-grained Malachite

作　　者：马英强[1,2,3] 汪子涵 杨绵延 宋振国 饶峰 印万忠 MA Yingqiang;WANG Zihan;YANG Mianyan;SONG Zhenguo;RAO Feng;YIN Wanzhong(Zijin School of Geology and Mining,Fuzhou University,Fuzhou 350108,China;State Key Laboratory of Mineral Processing Science and Technology,Beijing 102628,China;Fujian Key Laboratory of Green Extraction and High-value Utilization of New Energy Metals,Fuzhou 350108,China)

机构地区：[1]福州大学紫金地质与矿业学院,福建福州350108 [2]矿物加工科学与技术国家重点实验室,北京102628 [3]福建省新能源金属绿色提取与高值利用重点实验室,福建福州350108

出　　处：《金属矿山》2023年第8期80-86,共7页Metal Mine

基　　金：国家自然科学基金项目(编号:51804081);福建省自然科学基金项目(编号:2019J01253);矿物加工科学与技术国家重点实验室开放基金项目(编号:BGRIMM-KJSKL-2023-11)。

摘　　要：为了探究细粒级孔雀石浮选中矿物表面的分段硫化机制,在细粒级孔雀石分段硫化浮选试验基础上,采用矿物表面动电位测定、药剂吸附量检测以及X射线光电子能谱等方法对药剂作用前后矿物表面电性、药剂吸附量以及矿物表面元素的种类和相对含量进行了分析。结果表明,细粒级孔雀石的最佳硫化浮选段数为三段,此时孔雀石回收率最高达到89.54%,继续增加浮选段数回收率下降;三段硫化浮选的细粒级孔雀石矿物表面电负性最强,且此时细粒级孔雀石矿物表面生成的一价铜的多硫化物含量最高,硫化效果最好,有利于捕收剂的吸附,提高矿物的浮选回收率。In order to explore the staged sulfidation mechanism of the mineral surface in fine-grained malachite flotation,the mineral surface electropotential measurement,reagent adsorption detection and X-ray photoelectron spectroscopy were used to analyze the mineral surface electrical properties,reagent adsorption amount,and the types and relative contents of mineral surface elements before and after the use of reagents based on the flotation tests.The results show that the best number of flotation sections for fine-grained malachite is three,and the highest recovery rate is 89.54%at this time;the electronegativity of the surface of fine-grained malachite minerals from three-stage sulfide flotation is the strongest,and the polysulfide content of monovalent copper generated on the surface of fine-grained malachite minerals is the highest,and the sulfide effect is the best,which is conducive to the adsorption of collectors and improving the flotation recovery rate of minerals.

关 键 词：分段硫化 细粒级孔雀石 浮选行为 硫化机理 多硫化物 

分 类 号：TD923[矿业工程—选矿]