IOCAS-IR  > 海洋地质与环境重点实验室
Mineralogical and geochemical characteristics of the Permian coal from the Qinshui Basin, northern China, with emphasis on lithium enrichment
Wang, Xiaomei1; Wang, Xiaoming1; Pan, Zhejun2; Pan, Wenhao3; Yin, Xuebo4; Chai, Pancun1; Pan, Sidong1; Yang, Qin5
2019-10-01
Source PublicationINTERNATIONAL JOURNAL OF COAL GEOLOGY
ISSN0166-5162
Volume214Pages:14
Corresponding AuthorPan, Zhejun(zhejun.pan@csiro.au)
AbstractComprehensive information about the concentrations, distribution, and modes of occurrence of elements in coal are important from the environmental and economic point of view. Although a great number of previous studies have investigated the geology of coalbed methane in the Qinshui Basin, only a few studies focused on the inorganic constituents in coal. More specifically, the mode of occurrences of valuable element Li in the No. 3 Coal is still unclear, although Li was found enriched. In this study, we present mineral characteristics, as well as multi-element data on the Permian No. 3 Coal from the Sucun and Gaohe Mines, Changzhi City, southern Qinshui Basin. The studied coals are characterized by low- to medium-ash yield (Ad = 5.72%-28.18%, 12.34% on average), low volatile matter yield (Vdaf = 8.49-15.17%, 10.96% on average), suggesting a low volatile bituminous coal to semi-anthracite. NH4-illite and kaolinite are the main minerals in the coals detected by XRD, and trace amount of minerals calcite, dolomite, quartz, pyrite and diaspore can also be found. The major elements of the studied No. 3 coals are dominated by SiO2 and Al2O3, ranging 2.49-16.45 wt% and 2.13-12.9 wt% (on a whole-coal basis), respectively. Li is enriched in the No. 3 coals (5 < CC < 10). Li in the studied coals is positively correlated with Al2O3, SiO2 and ash yield, with the correlation coefficients (r) of 0.86, 0.8, and 0.78, respectively. The sequential leaching results show that 96.6%-99.4% of Li in the coals was removed by HF. The proportion of Li present as the ion-exchange form and water soluble form accounts for < 1.1% and < 0.29% of the total Li respectively in the coals. Li in the studied coals are probably bound to clay minerals kaolinite and illite, residing mainly in non-exchangeable positions, either in the octahedral or pseudo-hexagonal sites.
KeywordNo. 3 Coal NH4-illite Kaolinite Lithium Sequential chemical extraction procedure Qinshui Basin
DOI10.1016/j.coal.2019.103254
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41572143] ; National Natural Science Foundation of China[41202114] ; National Natural Science Foundation of China[41101098] ; National Key Research and Development Program of China[2018YFC0604202] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUGL170220]
WOS Research AreaEnergy & Fuels ; Geology
WOS SubjectEnergy & Fuels ; Geosciences, Multidisciplinary
WOS IDWOS:000495519600006
PublisherELSEVIER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/164860
Collection海洋地质与环境重点实验室
Corresponding AuthorPan, Zhejun
Affiliation1.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Hubei, Peoples R China
2.CSIRO Energy Business Unit, Private Bag 10, Clayton, Vic 3169, Australia
3.Shenzhen Water Planning & Design Inst Co Ltd, Shenzhen 518000, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China
5.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiaomei,Wang, Xiaoming,Pan, Zhejun,et al. Mineralogical and geochemical characteristics of the Permian coal from the Qinshui Basin, northern China, with emphasis on lithium enrichment[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2019,214:14.
APA Wang, Xiaomei.,Wang, Xiaoming.,Pan, Zhejun.,Pan, Wenhao.,Yin, Xuebo.,...&Yang, Qin.(2019).Mineralogical and geochemical characteristics of the Permian coal from the Qinshui Basin, northern China, with emphasis on lithium enrichment.INTERNATIONAL JOURNAL OF COAL GEOLOGY,214,14.
MLA Wang, Xiaomei,et al."Mineralogical and geochemical characteristics of the Permian coal from the Qinshui Basin, northern China, with emphasis on lithium enrichment".INTERNATIONAL JOURNAL OF COAL GEOLOGY 214(2019):14.
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