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有色金属(冶炼部分):2021,(9):37-40
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从黏土型锂矿中高效浸出锂的研究
徐璐, 惠博, 龚大兴, 赖杨, 田恩源
(中国地质科学院矿产综合利用研究所)
Study on High-efficient Leaching of Lithium from Clay-type Lithium Ore
XU Lu, HUI Bo, GONG Da-xing, LAI Yang, TIAN En-yuan
(Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences,Chinese Geological Survey Metal Mineral Resource Utilization Technology Center,Chengdu)
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投稿时间:2021-03-22     修订日期:2021-03-29     录用日期:2021-04-06     网络发布日期:2021-08-27
中文摘要: 采用焙烧—酸浸的方法从某Li2O品位为0.64%的黏土型锂矿中浸出锂,考察了焙烧时间和焙烧温度对Li2O浸出率的影响,利用正交试验研究了酸浸工艺中浸出温度和时间、硫酸浓度和液固比对Li2O浸出率的影响。结果表明,黏土型锂矿在600 ℃焙烧30 min后,锂焙烧渣在浸出温度90 ℃、浸出时间30 min、硫酸浓度为1.5 mol/L、浸出液固比为6的条件下搅拌浸出,Li2O浸出率最高达92.97%,浸出效果良好。
中文关键词: 黏土型锂矿  锂  焙烧  浸出
Abstract:Lithium was leached from clay-type lithium ore with Li2O grade of 0.64% by roasting-acid leaching. Effects of roasting time and temperature on Li2O leaching rate were investigated. Effects of leaching temperature and time, sulfuric acid concentration, and ratio of liquid to solid (L/S) on Li2O leaching rate in acid leaching process were investigated by orthogonal test. The results show that Li2O leaching rate is 92.97% under the optimum conditions including roasting time of 30 min, roasting temperature of 600 ℃, leaching temperature of 90 ℃, leaching time of 30 min, sulfuric acid concentration of 1.5 mol/L, and L/S=6.
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基金项目:中国地质调查局公益性地质调查项目(DD20211236)
引用文本:
徐璐,惠博,龚大兴,赖杨,田恩源.从黏土型锂矿中高效浸出锂的研究[J].有色金属(冶炼部分),2021(9):37-40.
XU Lu,HUI Bo,GONG Da-xing,LAI Yang,TIAN En-yuan.Study on High-efficient Leaching of Lithium from Clay-type Lithium Ore[J].Nonferrous Metals (Extractive Metallurgy),2021(9):37-40.

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