A typical power plant fly ash was characterized according to its composition and physical properties as a basis for research on iron and aluminum recovery from the ash. The methods used are standard and require facilities and instruments available in many laboratories today. The procedures include photomicroscopic observation, size separation, magnetic separation, X-ray diffraction, thermal gravimetric analysis, differential thermal analysis, electron microprobe analysis and emission spectroscopy. The results will be useful in determining in what ways and under what conditions a given fly ash may be treated to recover the metals present in a usable form. Preliminary work has been done on a sulfuric acid leaching process and on a lime sintering process patterned after exploratory studies reported from Poland in 1973.
Proceedings of the Iowa Academy of Science
©1974 Iowa Academy of Science, Inc.
Cavin, Deniel C.; Klemm, William A.; and Burnet, George
"Analytical Methods for Characterization of Fly Ash,"
Proceedings of the Iowa Academy of Science, 81(3), 130-134.
Available at: https://scholarworks.uni.edu/pias/vol81/iss3/13