Premium
Microcharacterization of micron/submicron fly ash from a pulverized‐dry‐coal‐burning power plant
Author(s) -
Hazrati Azar,
Schrodt J. Thomas
Publication year - 1988
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740130206
Subject(s) - pulverized coal fired boiler , fly ash , coal , scanning electron microscope , materials science , auger electron spectroscopy , carbon fibers , bituminous coal , metallurgy , sulfur , transmission electron microscopy , mineralogy , composite material , chemistry , nanotechnology , physics , organic chemistry , composite number , nuclear physics
Micron/submicron fly ash particles from a pulverized‐dry‐coal‐burning power plant using an Eastern Kentucky bituminous coal, EKC no. 3, were subjected to physiocochemical microcharacterization analyses. These particles, when exposed to the beam of a transmission electron microscope, had their outer layers removed and as a result the appearance of their inclusions changed. Microchemical analysis by Auger electron spectroscopy (AES) revealed that splashed‐away layers were rich in sulfur and carbon with some coal‐originated, volatilized, condensed matter. The AES was used to analyze the composition of these layers and provide a thickness profile of the coating materials. Scanning electron micrographs revealed that the particles were partially hollow spheroids.