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首页> 外文期刊>Journal of African Earth Sciences >Coalification and fuel analysis of the Lower Carboniferous Thora coal seam in the Bedaa- Gebel Hazbar- Gebel Nukhul district, Sinai, Egypt
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Coalification and fuel analysis of the Lower Carboniferous Thora coal seam in the Bedaa- Gebel Hazbar- Gebel Nukhul district, Sinai, Egypt

机译：埃及西奈半岛Bedaa- Gebel Hazbar- Gebel Nukhul区下石炭纪Thora煤层的煤化和燃料分析

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Twenty channel coal samples were collected and examined along 15 km throughout the outcrops of coal bearing shale horizon in the middle part of the Abu Thora Formation in Sinai. The coal seam varies in thickness between 20 cm and 72 cm (averaging 55 cm). Fuel analysis shows the shaly coal facies is three times more dominant than the coal facies in the studied area. The type of coal is very low-grade with ash contents (d.b.; dry-base) of about 55% which is a poor quality for industrial use. The high ash content reflects the planner mire of the rheotrophic system during peat accumulation. Coalification paleo-temperature was relatively high of averaging 108.9 degrees C which could be attributed to additional thermal heating by the Jurassic sill capping the Abu Thora Formation especially within the western area of Gebel Hazbar. The studied coal is classified as medium rank ortho-bituminous based on the average vitrinite reflectance, gross calorific values, volatile matter, and fixed carbon. Vitrinite genesis and exinite genesis during developments of coal macerals are the two main pathways of the studied coal samples that are attributed to well preserved vascular plants under dominant anoxic waterlogged swampy conditions. (C) 2018 Elsevier Ltd. All rights reserved.
机译：在西奈阿布索拉组中部的整个含煤页岩水平露头的15公里处，收集了20个通道的煤样并进行了检查。煤层的厚度在20厘米至72厘米之间变化（平均55厘米）。燃料分析表明，在研究区，页岩煤相占主导地位是煤相的三倍。煤的类型很低，灰分含量（d.b .；干基）约为55％，这对于工业用途而言质量较差。高的灰分含量反映了泥炭堆积过程中拟营养系统的策划者泥潭。煤化古温度相对较高，平均为108.9摄氏度，这可能是由于盖在阿布索拉地层的侏罗纪窗台额外加热所致，特别是在Gebel Hazbar西部地区。根据平均镜质体反射率，总热值，挥发物和固定碳，所研究的煤被分类为中等等级的原烟煤。煤基岩发育过程中的玻璃铁矿成因和外生岩成因是研究的煤样品的两个主要途径，这归因于在缺氧淹水的沼泽条件下保存完好的维管植物。 （C）2018 Elsevier Ltd.保留所有权利。

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