Abstract
Based on the latest exploration data in the study area, the distribution of gallium in the 4 coal seams in Majialiang Fangping area of Fugu mining area and its geological influencing factors are analyzed. The results show that the weighted average mass fraction of gallium is 18 μg/g, which is 1-4 times higher than the global average. The yield of ash and the content of SiO2 and Al2O3 in coal ash are positively correlated with the content of gallium in coal. The content of total sulfur, organic sulfur, Fe2O3 in coal ash and the index of ash composition have negative correlation with the content of gallium in coal. These characteristics indicate that the mineral carrier of gallium in coal is mainly clay mineral, and the peat swamp with strong hydrodynamic force and weak reducibility may be conducive to the enrichment of gallium in coal.
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