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

作　　者：赵登魁[1,2,3] 符安宗 郑博 赵瑞君 吕良 程宏伟[1,2,3] 吕子虎 ZHAO Dengkui;FU Anzong;ZHENG Bo;ZHAO Ruijun;LYU Liang;CHENG Hongwei;LYU Zihu(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China;China National Engineering Research Center for Utilization of Industrial Minerals,Zhengzhou 450006,China;Key Laboratory for Polymetallic Ores'Evaluation and Utilization,Ministry of Nature Resources,Zhengzhou450006,China;Natural Resources Survey Institute of Heilongjiang Province,Harbin150036,China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,河南郑州450006 [2]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 [3]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 [4]黑龙江省自然资源调查院,黑龙江哈尔滨150036

出　　处：《矿产保护与利用》2024年第2期86-90,共5页Conservation and Utilization of Mineral Resources

基　　金：黑龙江省重点研发计划项目(GA21A204);中国地质调查局地质调查项目(DD20230353);河南省重点研发专项项目(221111320300)。

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38~150μm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。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 150μm,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 

分 类 号：TD926.4[矿业工程—选矿]