江西某锂多金属矿综合回收试验研究
Experimental Study on Comprehensive Recovery of a Lithium Polymetallic Ore in Jiangxi
李宇宏 1李俊英 2罗平1
作者信息
- 1. 赣州金环磁选科技装备股份有限公司
- 2. 江西环境工程职业学院
- 折叠
摘要
江西某风化型花岗岩锂云母多金属矿石中有用成分为锂、钽铌、长石;锂主要赋存于云母矿物中,锂云母较容解离,部分锂被铁离子晶格取代;钽铌主要赋存于钽铌铁矿中,嵌布粒度较细;长石中铁、钛等杂质含量不高.为高效开发利用该矿石资源,在进行了矿石性质分析基础上进行了选矿试验研究.结果表明,矿石在磨矿细度为-0.074 mm40%,采用1粗1精精选中矿1次再选重选流程选钽铌,重力沉降脱出-0.031 mm矿泥,1粗2精2扫浮选流程选锂,1次弱磁选、1粗1精高梯度强磁选流程脱出长石中的铁,获得了(TaNb)2O5品位36.35%、回收率46.04%的钽铌精矿,Li2O品位2.03%、回收率72.57%的锂云母精矿,产率62.95%、Fe2O3含量0.04%、白度72.2%的高白长石精矿.钽铌精矿回收率、锂云母精矿Li2O品位不高与矿石性质关系密切.
Abstract
The useful components in a weathered granite lepidolite polymetallic ore in Jiangxi are lithi-um,tantalum niobium and feldspar.Lithium mainly occurs in mica minerals.Lithium mica is more soluble and dissociated,and some lithium is replaced by iron ion lattice.Tantalum niobium mainly occurs in tanta-lum niobium iron ore,and the embedded particle size is fine.The content of iron,titanium and other impuri-ties in feldspar is not high.In order to efficiently develop and utilize the ore resources,the beneficiation test was carried out on the basis of ore property analysis.The results show that the grinding fineness of the ore is-0.074 mm 40%,and tantalum and niobium are separated by one roughing,one cleaning and middling one re-election gravity separation process.The-0.031 mm slime was removed by gravity sedimentation.Lithium was separated by one roughing-two cleaning-two scavenging flotation process.Iron in feldspar was removed by one low intensity magnetic separation and one roughing-one cleaning high gradient high intensity magnet-ic separation process.Tantalum-niobium concentrate with(TaNb)2O5 grade of 36.35%and recovery rate of 46.04%,lepidolite concentrate with Li2O grade of 2.03%and recovery rate of 72.57%,high albitite concen-trate with yield of 62.95%,Fe2O3 content of 0.04%and whiteness of 72.2%were obtained.The low recovery rate of tantalum-niobium concentrate and the low grade of lithium mica concentrate Li2O are closely related to the ore properties.
关键词
锂云母/钽铌矿/长石/脱泥Key words
lithium mica/tantalum niobium ore/feldspar/desliming引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据