摘要
本文以攀枝花地区的典型钒钛磁铁矿尾矿样品为研究对象,采用分批静态浸出方式,开展了浸提液pH值、环境温度、液固比、时间和粒径因素下的金属浸出试验。结果表明浸提液pH值、环境温度和液固比对浸提液中Co、Cr、Cu、Fe、Mn、Ni、Ti和Zn的浸出浓度影响显著,低pH值、高温和高液固比有利于金属元素的浸出。大部分金属(Co、Cr、Fe、Mn、Ni和Ti)的浸出浓度与粒径大小呈反比。铁尾矿中大部分金属(Co、Cr、Fe、Mn、Ni和Zn)的释放持续时间较长。对于铁尾矿的重金属污染防控,应考虑季节变化引起的金属浸出量变化,重点防控时期为夏季。此外,细粒径铁尾矿的金属释放量大,在金属污染防治过程中应当予以重视。
In this paper,the typical vanadium-titanium magnetite tailings in Panzhihua area were taken as the research object,the metal leaching experiments were carried out under the conditions of pH value,ambient temperature,liquid-solid ratio,time and particle size.The results showed that the leaching concentration of Co,Cr,Cu,Fe,Mn,Ni,Ti and Zn were significantly affected by pH,ambient temperature and liquid-solid ratio of the extract,and low pH,high temperature and high liquid-solid ratio were favorable for the leaching of metal elements.The leaching concentration of most metals(Co,Cr,Fe,Mn,Ni and Ti)is inversely proportional to the particle size.Most metals in iron tailings(Co,Cr,Fe,Mn,Ni and Zn)have a long release duration.For the prevention and control of heavy metal pollution in iron tailings,the change of metal pollution caused by seasonal changes should be considered,and emphasis should be focus on the prevention and control of summers with high rainfall,long duration of rainfall and high temperature,and the greater metal release of fine particle size iron tailings.
作者
刘应冬
徐力
王先达
缪家鑫
范良千
Liu Yingdong;Xu Li;Wang Xianda;Miao Jiaxin;Fan Liangqian(Institute of Multipurpose Utilization of Mineral Resources,CAGS,Technical Innovation Center of Rare Earth Resources,China Geological Survey,Research Center of Multipurpose Utilization of Metal Mineral Resources of China Geological Survey,Chengdu,Sichuan,China;College of Civil Engineering,Sichuan Agricultural University,Dujiangyan,Sichuan,China)
出处
《矿产综合利用》
CAS
北大核心
2020年第6期84-90,共7页
Multipurpose Utilization of Mineral Resources
基金
国家公益性基础调查二级项目(DD20189501)。
关键词
攀枝花
钒钛磁铁矿
尾矿
静态浸出
重金属元素
污染防控
Panzhihua
Vanadium-titanium magnetite
Tailings
Static leaching
Heavy metal elements
Pollution prevention and control
