Microscopic investigation of unburnt char in fly ash

A microscopic method to characterize unburnt char particles in fly ash is proposed. Polished samples of fly ash in epoxy resin to which a few drops of blue pigment have been added are observed by incident light microscopy. The char particles are classified into four types (vesicular, dense, mixed an...

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Bibliographic Details
Published in:Fuel (Guildford) 1985-01, Vol.64 (2), p.263-269
Main Author: Shibaoka, Michio
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
fly ash
Furnaces. Firing chambers. Burners
microscopy
unburnt char
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Summary:A microscopic method to characterize unburnt char particles in fly ash is proposed. Polished samples of fly ash in epoxy resin to which a few drops of blue pigment have been added are observed by incident light microscopy. The char particles are classified into four types (vesicular, dense, mixed and mineral-rich) and categorized into five volumetric size classes (>10 6, 10 6−10 5, 10 5−10 4, 10 4−10 3,
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(85)90227-3