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华北晚古生代煤中形态硫以黄铁矿硫和有机硫为主 ,硫酸盐硫含量极少。煤中黄铁矿大致可分为莓球状、粒状、块状、结核状和节理裂隙充填状等几种类型。镜质组含硫量高于惰性组 ,受淡水影响的煤中类脂组含硫量低于镜质组 ,受海水影响的煤中类脂组含硫量高于镜质组。纵向上 ,太原组煤中硫含量高于山西组及上、下石盒子组。平面上 ,太原组煤中硫从北往南有增加的趋势 ,反映泥炭沼泽受海水影响程度自北往南加大。山西组及上、下石盒子组煤中硫以特低硫为主 ,平面变化不明显。不同有机组分中微量元素分布存在差异 ,不同类型黄铁矿伴生元素含量不同。
The sulfur in the late Paleozoic coal in North China was dominated by pyrite and organic sulfur, with very little sulfate. Pyrite in coal can be roughly divided into raspberry spherical, granular, massive, nodular and joint fissure filling several other types. The sulfur content of vitrinite is higher than that of inert group, and the content of sulfur in lipids in fresh coal is lower than that of vitrinite. The content of sulfur in lipids in seawater affected by seawater is higher than vitrinite. Longitudinally, the sulfur content of coal in Taiyuan Formation is higher than that of Shanxi Formation and upper and lower Shihezi Formation. In the plane, sulfur in coal from Taiyuan Formation increased from north to south, which reflected that peat swamp was affected by seawater increasing from north to south. Shanxi group and the upper and lower Shihezi coal sulfur in ultra-low sulfur-based, flat change is not obvious. There are differences in the distribution of trace elements in different organic components, different types of pyrite associated elements are different.