新疆伊南煤田阿尔玛勒勘查区煤中硫分、灰分成因探讨

THE CAUSE OF ASH AND SULFUR IN COALOF AERMALE EXPLORATION AREA IN THE SOUTHERN MARGIN OF ILI BASIN COALFIELD

以地质勘查资料、煤质分析结果为依据,对新疆伊南煤田阿尔玛勒勘查区中——下侏罗统水西沟群煤中硫分、灰分组成特征及成因进行了探讨。研究结果表明:新疆伊南煤田阿尔玛勒勘查区中——下侏罗统水西沟群泥炭沼泽受淡水成煤环境影响,可利用的铁质与H2S反应生成硫铁化物含量较少,形成了该区特低——低硫煤的特点。同时,该区碎屑物供给较少,且由镜惰比可知,西山窑组煤层形成于高位沼泽,受地表水影响较小,从而形成了灰分产率低的特点。

Based on geological exploration data, coal quality analysis results, discusses the cause of ash and sulfur in coal of aeruale exploration area in the southern margin of ILI basin coalfield in the Jurassic coal characteristics and genetic analysis of sulfur content and ash composition.The results show that： aeruale exploration area in the southern margin of ILI basin coalfield in the Jurassic,peat bogs affected by fresh water environment,available iron reacted with H2S generates pyrite content of the compound was less,formed the characteristics very low-lowd sulfur coal.At the same time,sediment was supplied less,and from the ratio of vitrinte and inertinite, the coal of Xishanyao Formation formed in the high bog.So,less affected by surface water. Thus formed the characteristics of the ash yield is low.