广西某铅锌银硫化矿尾矿中黄药浸出特性研究  

Study on Leaching Characteristics of Xanthate in Lead-zinc-silver Sulfide Ore Tailings in Guangxi

作　　者：林达红 覃朝科 谭聪 孙伟 农泽喜 LIN Dahong;QIN Chaoke;TAN Cong;SUN Wei;NONG Zexi(China Nonferrous Metals(Guilin)Geology and Mining Co.,Ltd.,Guilin 541004,China;Technological Research Center of Guangxi Environment Treatment Engineering,Guilin 541004,China;Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology,Guilin 541004,China;Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base,Guilin 541004,China)

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [2]广西环境治理工程技术研究中心,广西桂林541004 [3]广西环境污染控制理论与技术重点实验室,广西桂林541004 [4]广西环境污染控制理论与技术重点实验室科教结合科技创新基地,广西桂林541004

出　　处：《金属矿山》2021年第2期115-119,共5页Metal Mine

基　　金：广西科技计划项目(编号:桂科AB16380278、桂科AB17129023);“广西特聘专家”专项经费项目(厅发[2017]40号)。

摘　　要：以广西某铅锌银尾矿为研究对象,采用静态浸出的试验方法,考察了浸取时间、振荡频率、液固比、初始pH值等因素对尾矿中黄药浸出量的影响。结果表明,在试验条件下,随着浸出时间的延长,静置体系黄药浸出量先增加后持续下降,而扰动体系(振荡频率为50、120、200 r/min)浸出量不断增加后趋于平稳,当浸出时间为4.5 h时,浸出量为静置时的1.62~3.36倍,浸出动力学曲线符合准二级动力学方程;初始pH值越低,液固比越大,提高振荡频率,黄药的浸出量越大,且液固比和初始pH值显著影响黄药的浸出;初始环境为中性,液固比从6 mL/g增加到40 mL/g,浸出量呈线性增加,从2.833 mg/kg增加至16.508 mg/kg;初始环境为酸性时促进黄药的浸出,碱性时抑制黄药的浸出,液固比6、10、20、40 mL/g,初始pH值由4增加至9时,黄药的浸出量分别下降了87.9%、92.7%、91.6%、85.2%。研究结果可为了解矿山尾矿残留浮选药剂的释放与迁移规律提供数据支持。Taking lead-zinc-silver tailings in Guangxi as research object,effects of leaching time,oscillation frequency,liquid-solid ratio,and initial pH on xanthate leaching amount were investigated using static leaching method.Results showed that under the experimental conditions,with leaching time,the xanthate leaching amount in standing system increased first and then decreased gradually,while in agitating system(oscillation frequency 50、120、200 r/min)increased and then became steady.The kinetics data were best described with the pseudo-second-order model.Lower pH,liquid-solid ratio and raising oscillation frequency can make greater xanthate leaching amount.Liquid-solid ratio and initial pH significantly affected the leaching of xanthate.The leaching amount increased from 2.833 mg/kg to 16.508 mg/kg linearly as liquidsolid ratio from 6 to 40 mL/g in initial neutraland environment.The leaching of xanthate was promoted in initial acid environment,but inhibited in initial alkaline environment.Leaching amount declined 87.9%、92.7%、91.6%、85.2%respectively with liquid-solid ratio 6、10、20、40 mL/g as initial pH from 4 to 9.Findings in this work provide data support for understanding leaching characteristics migration of residual flotation reagents in mine tailings.

关 键 词：尾矿 硫化矿 黄药 静态浸出 

分 类 号：TD925.6[矿业工程—选矿]