有色金属科学与工程2025，Vol.16Issue(2)：280-286,7.DOI:10.13264/j.cnki.ysjskx.2025.02.013
赣西地区某花岗岩云母锂矿工艺矿物学研究
Process mineralogy of granite-type lithium deposits in western Jiangxi province
摘要
Abstract
A considerable number of granite-type lithium resources have been newly discovered in western Jiangxi province for the past few years.In order to determine the occurrence state and process mineralogical characteristics of lithium,systematic research of process mineralogy on large-scale granite-type mica lithium deposits was carried out by using scanning electron microscopy(SEM),X-ray diffraction(XRD)and mineral automatic quantitative analysis(MLA).The study comprised mineral composition,physico-chemical properties,mineral dissemination size,and element occurrence status.The research results indicated that lithium occurred in mica,montebrasite,and cookeite accounting for 93.88%,0.16%and 0.30%,respectively,while lithium in quartz and feldspar accounted for 5.66%.The mica was mainly trilithionite,followed by lepidolite(with a ratio of 9.5∶1).The mica dissemination size was relatively coarse,mainly distributed in the range of 0.16～2.56 mm.After grinding,the dissociation degree for different granularity mica was above 90%,with relative enrichment in the 0.3 mm particle size.Lepidolite and trilithionite were recovered in mineral processing.The average grade of Li2O for lepidolite concentrate was 1.30%,and the theoretical recovery rate of lithium was 93.88%.The relationship between lithium content and magnetism in mica shows that high-intensity magnetic separation could improve the lithium content in the mica flotation concentrate.关键词
工艺矿物学/锂云母/锂白云母/赋存状态/综合利用Key words
process mineralogy/lepidolite/trilithionite/occurrence status/comprehensive utilization分类
矿业与冶金引用本文复制引用
刘星星,李仁泽,张家琪,熊凯,周先军,彭波,李美荣,梁冬云..赣西地区某花岗岩云母锂矿工艺矿物学研究[J].有色金属科学与工程,2025,16(2):280-286,7.基金项目
江西省重点研发计划"揭榜挂帅"资助项目(20223BBG71015) （20223BBG71015）
江西省技术创新引导类计划资助项目(2023KDG01002) （2023KDG01002）
江西省地质局勘查基金资助项目(2023HYN03) （2023HYN03）
