Determination of the mineral distribution in pulverized coal using densitometry and laser particle sizing

被引：15

作者：

Zhang, H ^{[1
]}

Mo, YX ^{[1
]}

Sun, M ^{[1
]}

Wei, XY ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Chem Engn, Jiangsu 221008, Peoples R China

来源：

ENERGY & FUELS | 2005年 / 19卷 / 06期

关键词：

D O I：

10.1021/ef050201u

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Coal particle size and mineral matter content have important effects on coal combustion. The mineral content of five Chinese coals was determined by a method combining densitometry and particle-size analysis. The finer particles of pulverized samples were found to contain more mineral content. Rank also had a significant influence on the particle-size ash-content distribution of pulverized coal particles. The sharpest size-ash distribution was found in pulverized anthracite samples; a broader distribution was found with bituminous coal samples, while a uniform distribution was observed in pulverized lignite samples. Ash in higher ash anthracite or lower ash bituminous coal is more evenly distributed. It is a combined effect of size distribution, yield, and proximate analysis of their density separation fractions. Mineral matter tends to distribute more evenly in finer pulverized coals. This results from a relative increase of the low-density fraction in the finer particles.

引用

页码：2261 / 2267

页数：7

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