Affiliation:
1. JSC “Eastern Research Coal Chemistry Institute”
Abstract
For a quantitative assessment of the degree of coalification of coals in different countries, either average arbitrary (R0,r) vitrinite reflectance or average maximum (R0,max) vitrinite reflectance are mainly used. Since these indicators differ markedly in magnitude, in many countries, equations of the relationship between them have been established relatively long time ago in order to compare correctly the technological properties of different coals of the same type by indicators R0,max or R0,r. For Russian coals, the relationship between the vitrinite reflection indices R0,max and R0,r has not yet been established. Based on the studies of 40 samples of coals from Russia (Kuznetsk Basin), equations of the relationship between the average maximum (R0,max) and average arbitrary (R0,r) reflection values of coals vitrinite were obtained, taking into account the degree of their genetic recovery. The accuracy of calculating the indicator R0,max through R0,r at that is higher when taking into account the degree of genetic recovery of coals, which was 0.03%, versus 0.04% without accounting it. To compare technological properties of Russian coals by the same type of indicators R0,max or R0,r with the coals of Australia, USA, Canada, Poland, Germany, the equations of the relationship between the average maximum (R0,max) and the average arbitrary (R0,r) vitrinite reflectance presented for the coals of these countries according to publications in scientific journals.
Reference18 articles.
1. Diessel C.F.K. On the correlation between coal facies and depositional environments. Symposium Advance in the Study of the Sydney Basin. Proceedings of 20th Symposium of Univer of Newcastle, 1986, pp. 19–22.
2. Diessel C.F.K., McHugh E.A. Fluoreszenzintensitat und Reflexionsvermogen von vitriniten und Inertiniten zur Kennzeichnung des Verkokung-Sverhaltens. Gluckauf-Forschungsheffte, 1986, vol. 47, pp. 60–70.
3. Wilkins R.W.T., Diessel C.F.K., Buckingham C.P. Comparison of two petrographic methods for determining the degree of anomalous vitrinite reflectance. International Journal of Coal Geology, 2002, vol. 52, pp. 45–62.
4. Todd J., Karmazina E., Pickel W. A comparison of mean maximum and mean random reflectance analyses on Australian coals. 3rd Symposium on Gondwana Coals Porto-Alegre. September 16–18, 2009.
5. Neavel R.C., Smith S.E., Hippo E.J., Miller R.N. Optimum classification of coals in Proceedings of International Conference of Coal Science. Dusseldorf, Germany, September 7–9, 1981, pp. 1–9.