浮选—浸出法从某银尾矿中回收锰和银
Recovery of Manganese and Silver from a Silver Tailings by Flotation-leaching
赵登魁 1符安宗 2郑博 2赵瑞君 2吕良 1程宏伟 1吕子虎1
作者信息
- 1. 中国地质科学院郑州矿产综合利用研究所,河南 郑州 450006;国家非金属矿资源综合利用工程技术研究中心,河南 郑州 450006;自然资源部多金属矿综合利用评价重点实验室,河南 郑州 450006
- 2. 黑龙江省自然资源调查院,黑龙江 哈尔滨 150036
- 折叠
摘要
为了回收某银尾矿中的锰和银,详细研究了其矿物组成以及主要矿物的嵌布特征.其中,菱铁锰矿是主要回收对象,粒度较细,多呈集合体产出,粒度主要分布在 38～150 μm粒级;菱铁锰矿单体解离度为 81.95%,未解离部分以富连生体为主.根据工艺矿物学性质,采用浮选—浸出的选冶联合工艺回收银尾矿中的锰资源,浮选工艺获得Mn品位17.89%、Ag品位104.1g/t、回收率分别为 67.99%和 55.15%的锰精矿;锰精矿在最佳浸出条件下,得到锰浸出率为 98.11%的技术指标,锰综合回收率为66.70%.锰浸渣进一步氰化浸银,银浸出率为 95.61%,银综合回收率为 52.73%.银尾矿综合回收共伴生锰资源,不但提高了资源综合利用水平,同时提升了矿山企业的经济效益.
Abstract
In order to recover manganese and silver from silver tailings,the mineral composition and dissemination characteristics of the principal minerals were investigated.The results showed that the manganosiderite was the main mineral with fine particle size,and typically generated as aggregates with particle sizes ranging from 38 to 150 μm,and has a liberation degree of 81.95%,with rich aggregate dominating the unliberated component.A combination of flotation and leaching methods was employed based on the process mineralogical characteristics of the tailings.As a result,a manganese concentrate was obtained with an Mn grade of 17.89%with the recovery rates of 67.99%,an Ag grade of 104.1 g/t with the recovery rates of 55.15%.Under optimal leaching conditions,the manganese leaching rate reached 98.11%,with a total manganese recovery of 66.70%.The silver leaching rate from manganese leaching residue was 95.61%,with a total silver recovery rate of 52.73%.The comprehensive recovery of associated manganese resources from silver tailings not only improves the comprehensive utilization level of resources,but also improves the economic benefits of mining enterprises.
关键词
银尾矿/菱铁锰矿/浮选/浸出/锰矿Key words
silver tailings/manganosiderite/flotation/leaching/manganese ore引用本文复制引用
基金项目
黑龙江省重点研发计划(GA21A204)
中国地调局地质调查项目(DD20230353)
河南省重点研发专项(221111320300)
出版年
2024
国家科技期刊平台
NSTL
万方数据