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Abstract

The changes in petrographic composition and in some technological properties of coal have been investigated in the deposit, as well as during the exploitation and preparation process of coal, i.e. from seam to “saleable coal�. The changes have been presented as an example of two seams in which coal shows similar reflectance (0.91-0.93%), but which differ in petrographic composition and technological parameters. It has been ascertained that the petrographic composition of coal during technological processing undergoes changes, which are dependent on the processing method. The changes of petrographic composition are accompanied by changes of the technological parameters of coal. These lie mainly in signifi cant increase, in the final product, of the content of the vitrinite macerals group. Amongst microlithotypes an important increase in vitrite contents is observed; it is greater the smaller the final product fraction is. The content of clarite, as well as vitrinertite and trimacerite increases slightly, which in the case of the last two materials is particularly true for bigger fractions.  The content of carbominerite and rock material significantly decreases independent of fraction size.

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• Probierz2.pdf (587k)

Pour citer cet article :

Krystian PROBIERZ & Marek MARCISZ. «CHANGES IN THE PETROGRAPHIC COMPOSITION OF COAL DURING COAL PROCESSING». Geologica Belgica, volume 7 (2004)  number 3-4 Proceedings of the 5th European Coal Conference : 357-359
http://popups.ulg.ac.be/Geol/document.php?id=474

Les auteurs : 

Krystian  PROBIERZ

Silesian Technical University, Faculty of Mining and Geology, Institute of Applied Geology, 44-100 Gliwice, Akademicka 2. E-mail :  probierz@polsl.gliwice.pl

Marek  MARCISZ

Silesian Technical University, Faculty of Mining and Geology, Institute of Applied Geology, 44-100 Gliwice, Akademicka 2. E-mail :  marek@geo.gorn.polsl.gliwice.pl

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