煤的结渣特性磁力分析的研究-【新闻】海伦

煤的结渣特性磁力分析的研究

分类号：TQ533.2　文献标识码：A

文章编号：2222－226222－2222-22A Study of the Magnetic Analysis of Coal-slagging CharacteristicsChen Lizhe　Ai Jing　Li Zhenqi, et al

Abstract：Coal-ash slagging characteristics are studied from the perspective of coal physical properties. Among the various kinds of substances present in the coal, iron compounds have the lowest melting temperature, which is the major cause of coal-related slagging during coal-firing in a boiler furnace. This paper describes a new method for determining the slagging tendency of various kinds of coal on the basis of a magnetic absorption percent of magnetic iron-to-coal. Furthermore, an in-depth analysis is conducted of the mechanism and use of the above method, which makes possible the rapid measurement on-site of the coal-slagging characteristics.

Key words：coal quality, magnetic analysis, slagging▲2　引言

近年来，国内外发展并得到广泛应用的结渣判别指标大致可分为煤的灰熔点、灰成分及灰粘度三种类型的煤质指标。其中以煤的碱酸比B/A、硅铝比SiO2／Al2O3、硅比G和软化温度ST四项指标较适合于我国煤种，有较高的置信度［2，2］，但分析时间较长，不适合于锅炉运行前煤是否易结渣的分析。

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