煤尘湿润性实验研究

煤尘湿润性实验研究

郭有为[1,2]

[1]云南斯派尔矿业有限责任公司,云南曲靖655500 [2]山东能源枣庄矿业集团有限责任公司,山东枣庄277000

摘　要:

煤尘的湿润性是煤的一项重要的物理化学性质，它是煤尘粒子与外界空气所形成的“固-气”界面可被新的“固-液”界面所取代的一种特性;其与煤尘颗粒的化学成分、粒径、表面形状、表面粗糙度等自身条件以及环境因素有关。粉尘的湿润性是选择除尘方式的依据之一。根据GB/T 16913.8-1997方法，选择4个煤矿煤尘进行不同粒径煤尘浸润速度测定，并判断该煤尘的湿润性，并比较了水及湿润剂溶液对煤尘的湿润性程度，并根据所得的数据分析了煤尘湿润性的一般规律。

关键词:

煤尘 湿润性 浸透速度 湿润剂

分类号:　TD714.1

Experimental Study of the Coal-dust Wettability

Guo You-wei ( 1.Yunnan Sipaier Mining CO.,Ltd, Yunnan Qujing 655500; 2.Shandong Energy Zaozhuang Mining Group CO.,Ltd, Shandong Zaozhuang 277000 )

Abstract:

Coal-dust wettability is one important physicochemical properties, which is the"solid-gas"interface formed by the air outside and the solid particle could be replaced by a new"solid-liquid"interface.What are to affect the characteristic include the chemical composition, particle size, surface shape, surface roughness, other their own conditions and other external environmental factors. The wettability is one of the basis for choosing suitable dedusting way in coalmine. Based on GB/T 16913. 8-1997, 4 different coalmines were chosen for coal-dust wettability test. The experiments include immersion speed test for different particle sized coal-dust;immersion degree of coal-dust affected by water and wetting agent was compared. The normal law of coal-dust immersion was analyzed by the test.

Keyword:

coal-dust;wettability;immersion speed;wetting agent