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

Journal Article · Thu Dec 01 04:00:00 EST 2005 · Energy and Fuels

DOI:https://doi.org/10.1021/ef050201u· OSTI ID:20688432

Zhang, Hong; Mo, Yan-xue; Sun, Ming; Wei, Xian-yong ^[1]

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1. China University of Mining and Technology, Jiangsu (China). School of Chemical Engineering

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. 13 refs., 10 figs., 10 tabs.

• OSTI ID: 20688432
• Journal Information: Energy and Fuels, Journal Name: Energy and Fuels Journal Issue: 6 Vol. 19; ISSN ENFUEM; ISSN 0887-0624
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ANTHRACITE
ASH CONTENT
BITUMINOUS COAL
COAL RANK
DISTRIBUTION
LIGNITE
MINERALOGY
MINERALS
PARTICLE SIZE
PULVERIZED FUELS