摘要
锂铷铯是重要的战略关键金属,主要赋存于江西宜春含锂瓷土矿中,资源储量大,开发利用价值高,但锂铷铯品位低,赋存形态复杂,矿石风化泥化严重,导致综合回收困难。为实现低品位共伴生锂铷铯同步浮选回收,本研究采用“预脱微泥-强化浮选”工艺对含铷铯锂云母矿物进行了综合回收试验。结果表明,磨矿细度-0.074 mm含量(质量分数)为45%,脱泥粒度为25μm,采用六偏磷酸钠作分散剂,新型阴阳离子组合捕收剂ZJ-25作锂铷铯同步浮选捕收剂,在原矿含0.52%Li_(2)O、0.20%Rb_(2)O、0.04%Cs2O的条件下,经“一粗两精两扫”的浮选工艺流程,获得含铷铯锂云母精矿Li_(2)O品位为2.51%,回收率为78.34%,Rb_(2)O品位为0.88%,回收率为71.41%,Cs2O品位为0.18%,回收率为74.25%。精矿中锂铷铯品位与回收率均较高,可为锂铷铯冶炼提取提供优质原料,实现了含锂瓷土矿中锂铷铯关键金属的同步浮选回收。
Lithium,rubidium and cesium are important strategic key metals that are mainly found in lithium-bearing clay de-posits in Yichun,Jiangxi Province.They have large resource reserves and high development and utilization value,but their grades are low and their occurrence forms are complex.The minerals are seriously weathered and hydrolyzed,making it difficult to comprehensively recover them.In order to achieve the simultaneous flotation recovery of low-grade lithium,rubidium and cesium from mica minerals,this study conducted a comprehensive recovery experiment of lithium,rubidium and cesium using the"pre-de-mudding-enhanced flotation"process.The results show that when the grinding fineness is-0.074 mm content of 45%,the de-mudding particle size is 25μm,and sodium hexametaphosphate is used as a dispersant,and the new cation-anion composite collector ZJ-25 is used as a collector for the simultaneous flotation of lithium,rubidium and cesium,under the condition that the original ore contains 0.52%Li_(2)O,0.20%Rb_(2)O,and 0.04%Cs2O,a flotation process consisting of"one roughing,two cleanings,two scavengings"has been adopted to obtain a lithium-bearing mica concentrate with Li_(2)O grade of 2.51%,recovery rate of 78.34%,Rb_(2)O grade of 0.88%,recovery rate of 71.41%,and Cs2O grade of 0.18%,recovery rate of 74.25%.The lithium,rubidium,and cesium grades and recovery rates in the concentrate are all high,providing high-quality raw materials for lithium,rubidium,and cesium smelting and extraction,and achieving the simultaneous flotation recovery of key metals lithium,rubidium,and cesium in lithium-bearing clay ore.
作者
朱光杰
郭江凤
周贺鹏
邹伟民
邱振忠
毛美心
唐立靖
程仁举
Zhu Guangjie;Guo Jiangfeng;Zhou Hepeng;Zou Weimin;Qiu Zhenzhong;Mao Meixin;Tang Lijing;Cheng Renju(Yichun Lithium New Energy Industry Research Institute,Jiangxi University of Science and Technology,Yichun,Jiangxi 336000;Faculty of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000;Jiangxi Yongxing Special Steel New Energy Technology Co.,Ltd.,Yichun,Jiangxi 336000;Yichun Times New Energy Resources Co.,Ltd.,Yichun,Jiangxi 336000;Institute of Comprehensive Utilization of Minerals,Chinese Academy of Geological Sciences,Chendu,Sichuan 610000)
出处
《非金属矿》
2025年第1期33-37,共5页
Non-Metallic Mines
基金
国家重点研发计划(SQ2023YFC2900149)
国家自然科学基金(92475119)
江西省重点研发计划(S2020ZPYFB0039)
宜春市重大科技攻关项目(2023ZDKJGG03)。
关键词
含锂瓷土矿
锂铷铯
阴阳离子组合捕收剂
同步浮选
lithium-bearing china clay
lithium rubidium cesium
cation-anion composite collector
synchronous flotation
作者简介
通信作者:周贺鹏,E-mail:zhp0919@163.com。
