Campus Units
Chemical and Biological Engineering
Document Type
Book Chapter
Publication Version
Published Version
Publication Date
1986
Journal or Book Title
Mineral Matter and Ash in Coal
Volume
301
First Page
462
Last Page
472
DOI
10.1021/bk-1986-0301.ch034
Abstract
Most of the mineral matter was extracted from Illinois No. 6 coal, a representative bituminous coal, by first leaching it with a hot alkaline solution and then with a dilute mineral acid. The alkalis employed, in decreasing effectiveness, were: (1) NaOH, (2) Na2CO3, (3) NaHCO3. The results generally agreed with those obtained in leaching quartz, kaolinite, and iron pyrite individually under similar conditions. The quartz was solubilized by the stronger alkalis. Kaolinite was largely converted to sodium hydroaluminosilicates such as analcime, hydroxycancrinite, and natrodavyne. A portion of the iron pyrite was converted to hematite, the amount depending on alkali strength and temperature. The sodium hydroaluminosilicates and hematite were subsequently extracted by acid.
Copyright Owner
American Chemical Society
Copyright Date
1986
Language
en
File Format
application/pdf
Recommended Citation
Fan, C.W.; Markuszewski, Richard; and Wheelock, Thomas D., "Behavior of Quartz, Kaolinite, and Pyrite during Alkaline Leaching of Coal" (1986). Chemical and Biological Engineering Publications. 270.
https://lib.dr.iastate.edu/cbe_pubs/270
Included in
Catalysis and Reaction Engineering Commons, Other Chemical Engineering Commons, Petroleum Engineering Commons
Comments
Reprinted (adapted) with permission from Mineral Matter and Ash in Coal, Chapter 34, pp 462–472. Copyright 1986 American Chemical Society.