定量判定烟煤风化变质程度及时间技术研究

Study on Quantitative Determination of Weathering Degree and Time of Bituminous Coal

风化氧化对煤的性质有重大的影响,在空气中放置的煤受到外界因素的综合影响时,其物理性质、化学性质及工艺性质都会发生改变,这种变化的最根本原因就是煤的有机质和矿物质被氧化。在商贸及煤质应用上,均需要掌握烟煤受风化氧化质量劣化的程度和煤质开采后暴露在大气中风化时间。精确鉴定煤质受到风化时间的研究,尚未见诸公开研究,本文通过研究基氏流动度受风化影响的变化规律,填补这方面技术研究空白。

Weathering oxidation has a significant impact on the nature of coal.When the coal placed in the air is comprehensively affected by external factors,its physical,chemical and process properties will change.The most fundamental reason for this change is that the organic matter and minerals of coal are oxidized.In terms of trade and coal quality application,it is necessary to master the degree of weathering oxidation quality degradation and the weathering time of exposure to the atmosphere after coal quality extraction.The precise identification of the weathering time of coal quality has not been seen in public research.This paper fills the technical research gap through studying the change law of the base flow degree affected by weathering.