Distribution and enrichment of Al-Li-Ga-REEs in the High-Alumina coal of the Datong Coalfield, Shanxi Province, China

Shao, Peng; Hou, Hongjian; Wang, Wenlong; Qin, Kemin; Wang, Wenfeng

doi:10.1016/j.oregeorev.2021.104597

Cited by 15 publications

(11 citation statements)

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“…The Shanxi coal samples were accumulated on the delta plains, which have a lower sulfur content. Part of the coal samples is affected by magmatic-hydrothermal fluids or brackish water to yield an abnormally high pyrite content …”

Section: Discussionmentioning

confidence: 99%

“…The sulfur content in coal is relatively lower. Magmatic rocks such as lamprophyre, basaltic andesite, and diabase are developed in the sampling location …”

Section: Methodsmentioning

confidence: 99%

“…Shao et al revealed the complex morphology of carbon in pyrite using spectral analysis. 29 Wang et al believed that the carbon atoms in pyrite may cause crystal defects in pyrite. 9 To confirm whether carbon is involved in the chemical structure of pyrite, two coal-pyrite samples from Guizhou Province and hydrothermal-pyrite from the Yaogangxian Mine, Hunan Province, were crushed and analyzed by XPS.…”

Section: Interaction With Organic Mattermentioning

confidence: 99%

“…Part of the coal samples is affected by magmatic-hydrothermal fluids or brackish water to yield an abnormally high pyrite content. 29 Fine-grained pyrites in coal are generally formed in the sedimentary period in the early peat accumulation stage. These pyrites are typically smaller than 20 μm in size and have a low content of coal.…”

Section: Occurrence and Genetic Environment Of Pyritementioning

confidence: 99%

“…Magmatic rocks such as lamprophyre, basaltic andesite, and diabase are developed in the sampling location. 29 2.2. Sample Preparations and Experimental Procedures.…”

Section: Coal-forming Environment and Geological Conditionsmentioning

confidence: 99%

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Occurrence Characteristics of Fine-Grained Pyrite in Coal and Its Scaling Effect on Flotation Desulfurization

Wang

Zhang

2022

ACS Omega

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To explore the occurrence and distribution characteristics of fine-grained pyrites in coal and the effect of pyrite particle size on flotation efficiency, coal samples from Guizhou province and Shanxi province, China, were selected for pyrite morphology observation and sulfur content test before and after flotation desulfurization experiments with different coal particle sizes. Experimental results showed that the fine-grained fine pyrites in coal have various occurrence forms and complex connections with the coal matrix. The fragmentation process can change the distribution of pyrite content in coal. Flotation desulfurization experiments showed that the sum of pyrite content in the cleaned coal and middlings gradually became significantly higher in coal particles with size 15–37 μm compared with particle sizes 37–44 and 44–75 μm. The complex occurrence morphology and crystal structure of fine-grained pyrite make it difficult to be removed from the coal matrix by ore grinding during flotation. Fine-grained pyrite mainly occurs in the form of framboïdal pyrite, disseminated pyrite, and monomer pyrite with a size of 0.69–33.94 μm in the middlings and cleaned coal. Therefore, 37 μm is considered as the critical dimension for ore grinding to improve the effective flotation desulphurization efficiency in this study, and some more effective methods should be used to increase the desulfurization efficiency of fine-grained pyrite.

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Section: Discussionmentioning

confidence: 99%

“…The sulfur content in coal is relatively lower. Magmatic rocks such as lamprophyre, basaltic andesite, and diabase are developed in the sampling location …”

Section: Methodsmentioning

confidence: 99%

Section: Interaction With Organic Mattermentioning

confidence: 99%

Section: Occurrence and Genetic Environment Of Pyritementioning

confidence: 99%

“…Magmatic rocks such as lamprophyre, basaltic andesite, and diabase are developed in the sampling location. 29 2.2. Sample Preparations and Experimental Procedures.…”

Section: Coal-forming Environment and Geological Conditionsmentioning

confidence: 99%

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