Relationship Between the Coal Forming Environment and Sulfur in the Late Permian Coal of Sichuan, China
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摘要: 本文从沉积学、成煤环境、地球化学等方面研究了煤中硫的分布规律，并详细阐明了煤中硫与成煤环境的关系。研究表明：煤中硫的赋存状况，不仅受成煤环境的影响，而且受其顶板沉积环境的影响。成煤环境奠定了煤中硫的分布基础，而顶板环境则是促使煤富硫、高硫的重要因素。微咸水浑水潮坪的顶板沉积环境，导致了下伏煤高黄铁矿硫，而咸水的清水潮坪顶板环境则导致下伏煤高有机硫。Abstract: The distributive regulation of sulfur in coal is discussed on the basis of sedimentology, coal forming environment, geochemistry, etc. in this study. And the relationship between the coal forming environment and sulfur in coal is clarified in detail. The study indicates that the occurrence information of sulfur in coal is not only influenced by coal accumuating environment, but also by roof depositional environment. The coal forming environment has laid a foundation of sulfur occurrence in coal, while roof depositional environment is important and key link to make coal with high sulfur. The roof depositional environment of brackish muddy water tidal flat leads to high pyritized sulfur in underlying coal while that of clean marine water tidal flat leads to high organic sulfur in underlying coal.
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Key words:
- Late Permian /
- coal /
- sulfur /
- coal forming environment /
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