Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-23T17:11:04.307Z Has data issue: false hasContentIssue false
  • English
  • Français

X-Ray Quantitative Analysis of Coal By The Reference Intensity Method

Published online by Cambridge University Press:  10 January 2013

Briant L. Davis ,
L. Ronald Johnson  and
T. Mebrahtu
Briant L. Davis
Affiliation:
Institute of Atmospheric Sciences, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, U.S.A.
L. Ronald Johnson
Affiliation:
Institute of Atmospheric Sciences, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, U.S.A.
T. Mebrahtu
Affiliation:
Institute of Atmospheric Sciences, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, U.S.A.
Get access Rights & Permissions [Opens in a new window]

Abstract

Twenty-four coal samples representing the four major rank types were analyzed by the X-ray RIM methodology which includes mass absorption analysis by X-ray transmission and quantitative X-ray powder diffraction. Twenty-three separate mineral species were observed in the samples, many of which could be quantified in the whole coal analysis. Several mineral species at levels of 5 weightpercent or less were observed only in the ashed scans. Some dehydration and reconstitution reactions were observed in the ashing process, including the combination of organically bound alkaline-earth elements and sulfur to form bassanite and magnesium sulfates. Quartz and kaolinite dominated the silicate mineral portion of the mineralogy, whereas calcite and siderite represented the carbonate; pyrite with associated sulfate oxidation products were generally present as well. The X-ray transmission studies were successful in estimating the carbonaceous matter in the whole coal samples and comparison of the chemical oxides derived from the X-ray data with direct analyses from the Penn State data sheets revealed good correlations, although significant departures occurred for some species and a systematic underestimation of aluminum oxide from the X-ray clay peaks was observed. This study suggests that the RIM procedure can be applied to coal mineral and amorphous component analysis on a routine basis.

Type
Research Article
Information
Powder Diffraction , Volume 1 , Issue 3 , September 1986 , pp. 244 - 255
Copyright
Copyright © Cambridge University Press 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Chung, F. H. (1974). J. Appl. Cryst., 7, 526–531.Google Scholar
Davis, B. L. (1980). Atmos. Environ., 14, 217–220.CrossRefGoogle Scholar
Davis, B. L. (1984). Adv. X-ray Anal., 27, 339–348.Google Scholar
Davis, B. S. (1986). This issue, 240.CrossRefGoogle Scholar
Davis, B. L., Johnson, L. R., Griffen, D. T., Phillips, W. R., Stevens, R. K. & Maughan, D. (1981). J. Appl. Meteor., 20, 922–933.2.0.CO;2>CrossRefGoogle Scholar
Davis, B. L. & Walawender, M. J. (1982). Amer. Min., 67, 1135–1143.Google Scholar
Deer, W. A., Howie, R. A. & Zussman, J. (1962, 1963). Rock Forming Minerals. New York, Wiley.Google Scholar
Dixon, K., Skipsey, E. & Watts, J. T. (1964). J. Inst. Fuel, 37, 485–493.Google Scholar
Durie, R. A. (1961). Fuel, 40, 407–422.Google Scholar
Endell, J. & Endell, K. (1943). Feuerungstechnik, 31, 137–143.Google Scholar
Gluskoter, H. J. (1967). J. Sed. Petrol., 37, 205–214.Google Scholar
Hicks, D. & Nagelschmidt, G. (1943). Med. Res. Council Reports, 244 B.Google Scholar
Karyakin, S. K. (1977). Khim. Tverd. Topl., 6, 63–66.Google Scholar
Leroux, J., Lennox, D. & Kay, K. (1953). Anal. Chem., 25, 740–743.CrossRefGoogle Scholar
Maruyama, T. & Kobayashi, K. (1965).J. Fuel Soc. of Japan, 44, 633–640.Google Scholar
Mitra, G. B. (1954). Fuel, 33, 316–330.Google Scholar
Paulson, L. E. and Fowkes, W. W. (1968). Bureau of Mines, Report of Investigations No. 176. 18 pp.Google Scholar
Rao, C. P. & Gluskoter, H. J. (1973). Illinois State Geological Survey, Circular 476. 56 pp.Google Scholar
Renton, G. J. (1984). Preprints. American Chemical Society. Div. Fuel Chem., 29 (4), 221–227.Google Scholar
Watt, J. D. (1968). The Physical and Chemical Behavior of the Mineral Matter in Coal Under the Conditions Met in Combustion Plant. Part I. BCURA Literature Survey, BCURA Industrial Laboratories, Leatherhead, Surrey, England. 102 pp.Google Scholar
Watt, J. D. (1969). The Physical and Chemical Behavior of the Mineral Matter in Coal Under the Conditions Met in Combustion Plant. Part II. BCURA Literature Survey, BCURA Industrial Laboratories, Leatherhead, Surrey, England. 111 pp.Google Scholar