Abstract
The content and distribution of the lead in coal, gangue and the sulfur ball and the pyritic gangue </A>of the Permo-Carboniferous in the North China Plate have been systematically studied (nearly 300 samples) in this paper. The Permo-Carboniferous coals in the North China Plate account for nearly 44.45 of total Chinese coal resources, and most of the steam coals in China come from the Permo-Carboniferous coals in the North China Plate. The result shows that lead content in the coal varied from 1.45 to 63.60 mg kg−1, averaging 23.95 mg kg−1; the lead content of the sulfur ball and the pyritic gangue in the coal seam ranges from 70.26–1060 mg kg−1, with an average of 271.28 mg kg−1; the lead content of the gangue is from 29.5 to 77.81 mg kg−1, averaging at 40.77 mg kg−1. The lead in the coal seam is mainly concentrated in the pyrite, such as sulfur ball, pyritic gangue or pyrite, and is the least concentrated in the organic of coal. The content of the lead has a direct ratio with the ash and the pyretic sulfur. Coal washing can reduce the content of the pyretic sulfur and the lead.
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Kunli, L., Jidong, L. & Lianwu, C. Lead distribution in Permo-Carboniferous coal from the North China Plate, China. Environ Geochem Health 27, 31–37 (2005). https://doi.org/10.1007/s10653-004-5669-1
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DOI: https://doi.org/10.1007/s10653-004-5669-1