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首页> 外文期刊>ACS Omega >Enrichment and Occurrence of Mn in 5–2 Coal from Qinglongsi Coal Mine, Northern Ordos Basin, China
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Enrichment and Occurrence of Mn in 5–2 Coal from Qinglongsi Coal Mine, Northern Ordos Basin, China

机译：中国北鄂尔多斯盆地青龙煤矿5-2煤中富集及发生浓缩及发生

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摘要

High concentrations of Mn were observed in 5~(–2) coal (Jurassic age) from Qinglongsi coal mine in the Northern Ordos Basin. To study the occurrence characteristics and sedimentary environment of the 5~(–2) coal (3.9 m), 22 samples were collected from a mining face. The test result indicates that the 5~(–2) coal is in low-ash, high-volatile, very low-sulfur, and bituminous rank, with high inertinite content. The minerals in Jurassic 5~(–2) coal are composed primarily of kaolinite, siderite, calcite, quartz, pyrite, K-feldspar, and fluorapatite. The Mn element is enriched in the upper part of the 5~(–2) coal seam with an average of 1243.01 μg/g, which is about 17.5 times higher than the average of world hard coal. The concentration level of Mn has a positive correlation with that of Fe_(2)O_(3) and carbonate minerals. A weak reduction environment of the coal-accumulating swamp may induce the enrichment of Mn, which is mainly carried by siderite in the 5~(–2) coal.
机译：在鄂尔多斯盆地北部青龙煤矿的5〜（2）煤（侏罗纪时代）观察到高浓度的Mn。为了研究5〜（2）煤（3.9M）的发生特性和沉积环境，从采矿面收集22个样品。试验结果表明，5〜（2）煤处于低灰，高挥发性，低硫和沥青等级，具有高偏心含量。侏罗纪5〜（-2）煤的矿物主要由高岭石，硫酸盐，方解石，石英，黄铁矿，K-Feldspar和Fluorapatite组成。 Mn元素富含5〜（-2）煤层的上部，平均为1243.01μg/ g，比世界硬煤的平均值高约17.5倍。 Mn的浓度水平与Fe_（2）O_（3）和碳酸盐矿物的阳性相关性。煤积聚沼泽的弱化环境可以诱导Mn的富集，其主要由5〜（2）煤中的硫酸盐携带。

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