摘要
针对湖北某黏土型锂矿盐酸浸出液中铝高锂低的特性,使用煅烧法对锂铝进行分离,在煅烧温度390℃、煅烧时间2.0 h,水浸时浸出体积比3∶1、煅烧渣不磨、浸出温度90℃、浸出时间1.0 h条件下,锂浸出率可达93.85%,浸出液中铝未检出,锂铝分离效果较好。煅烧渣和浸出渣化学成分分析结果表明,水浸后,除铝和铁外,煅烧渣中锂、钾、钠、钙、镁等主要金属元素都进入了浸出液中,浸出渣主要成分为氧化铝和氧化铁。
According to the characteristics of high-content aluminum and low-content lithium in hydrochloric acid leaching solution of a clay-type lithium ore in Hubei Province,lithium and aluminum were firstly separated by adopting calcination at 390 ℃ for 2.0 h.Then,the calcined residue,without grinding,was leached at 90 ℃ for 1 h with water in a volume ratio of 3∶1.After the leaching process,the leaching rate of lithium reached 93.85%,and no aluminum was detected in leaching solution,indicating a good Li-Al separation result.An analysis of chemical composition of calcined residue and leaching residue show that after water leaching,the main metal elements in the calcined residue,such as lithium,kalium,sodium,calcium and magnesium,all are leached into the lixivium,and the main composition of leaching residue are alumina and iron oxide.
作者
康健
崔培龙
康昱
黄鹏
闫博
林璠
刘爽
KANG Jian;CUI Peilong;KANG Yu;HUANG Peng;YAN Bo;LIN Fan;LIU Shuang(Key Laboratory of Exploration and Comprehensive Utilization of Rare and Scattered Minerals of MNR,Wuhan 430034,Hubei,China;Hubei Geological Research Laboratory,Wuhan 430034,Hubei,China;The Eighth Geological Brigade of Hubei Provincial Geological Bureau,Xiangyang 441000,Hubei,China)
出处
《矿冶工程》
CAS
北大核心
2024年第6期90-93,共4页
Mining and Metallurgical Engineering
基金
国家重点研发计划(2021YFC2903000)
湖北省自然科学基金(2023AFB1104)
湖北省地质局矿产地质项目(KCDZ2023-22)。
关键词
黏土型锂矿
煅烧法
锂铝分离
锂
水浸
提锂
clay-type lithium ore
calcination method
lithium-aluminum separation
lithium
water leaching
lithium extraction
