CAS OpenIR
Lithium recovery from lepidolite roasted with potassium compounds
Su, Hui1,2,3; Ju, Jiaying4; Zhang, Jian1,2,3; Yi, Aifei1,2; Lei, Ze4; Wang, Lina1,2; Zhu, Zhaowu1,2; Qi, Tao1,2
2020
Source PublicationMINERALS ENGINEERING
ISSN0892-6875
Volume145Pages:9
AbstractThree different potassium compounds, namely K2SO4, KOH, and K2SO4 + KOH, were used as additives to extract lithium from lepidolite by roasting and water leaching. The effect of the additive/ore mass ratio on the extraction of Li, K, Si, and Al was compared among the different additives. Efficient extraction of Li and K was obtained by roasting lepidolite with the K2SO4 and K2SO4 + KOH additives. The Li extraction and K recovery were 92.78% and 81.72% respectively under the optimum conditions: K2SO4/KOH/ore mass ratio of 1:0.5:1, roasting at 900 degrees C for 2 h, and water leaching at 90 degrees C for 3 h with a liquid to solid (L/S) ratio of 5:1. The decomposition process of lepidolite with different additives was explored. The results indicate that lepidolite is decomposed into kalsilite when roasted with KOH and mixed phases of kalsilite, leucite, K2SO4, and LiKSO4 when roasted with K2SO4 and K2SO4 + KOH additives. Li in the lepidolite is converted into soluble LiKSO4, facilitating its extraction. The addition of KOH contributes to the formation of kalsilite, which makes K recovery easier.
KeywordLepidolite Lithium K2SO4 KOH Roasting Water leaching
DOI10.1016/j.mineng.2019.106087
Language英语
WOS KeywordEXTRACTION ; BRINE
Funding ProjectNational Key R&D Program of China[2018YFC1900500] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; National Natural Science Foundation of China[21606241] ; National Natural Science Foundation of China[51804289.] ; National Natural Science Foundation of China[51774260] ; CAS Interdisciplinary Innovation Team
WOS Research AreaEngineering ; Mineralogy ; Mining & Mineral Processing
WOS SubjectEngineering, Chemical ; Mineralogy ; Mining & Mineral Processing
Funding OrganizationNational Key R&D Program of China ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team
WOS IDWOS:000498752100026
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38350
Collection中国科学院过程工程研究所
Corresponding AuthorZhu, Zhaowu
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 101408, Peoples R China
4.China Univ Min & Technol, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Su, Hui,Ju, Jiaying,Zhang, Jian,et al. Lithium recovery from lepidolite roasted with potassium compounds[J]. MINERALS ENGINEERING,2020,145:9.
APA Su, Hui.,Ju, Jiaying.,Zhang, Jian.,Yi, Aifei.,Lei, Ze.,...&Qi, Tao.(2020).Lithium recovery from lepidolite roasted with potassium compounds.MINERALS ENGINEERING,145,9.
MLA Su, Hui,et al."Lithium recovery from lepidolite roasted with potassium compounds".MINERALS ENGINEERING 145(2020):9.
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