Abstract
The aim of the work was to characterize in coalification parameters (moisture content W a , volatile mat- ter V daf and random reflectance of vitrinite R) and changes in petrographical composition of coal from the Bzie Debina drillhole (BD 57). The object of examination were representative coal seams from the BD 57 drillhole. It was found increase of coal rank is expressed by a reduction of moisture content and volatile matter and the in- crease reflectance with depth. In petrographic composition vitrinite group macerals (Vt mmf = 65.8-91.0%) domi- nate over the inertinite group (I mmf = 6.2-28.4). Participatiof liptinite maceral group is low (L mmf = 1.9-5.8%). Inertinite macerals group participation does not increase with coal rank, unlike in the Zofiowka monocline.
Highlights
The BD 57 drillhole is located within the coking coal deposit of “Bzie-Dębina” on the Jastrzębie area (SW part of the Upper Silesian Coal Basin)
This area with coal deposits is significant for the resource base of Polish coking coal because Poland belongs to the largest producers of coke worldwide and is one of the top exporters of coke both in Poland and the world
Conducted research showed a distinct tendency of increase of coal rank with depth described by the decrease of moisture content Wa and volatile matter Vdaf and increase of reflectance R
Summary
The BD 57 drillhole is located within the coking coal deposit of “Bzie-Dębina” on the Jastrzębie area (SW part of the Upper Silesian Coal Basin). This area with coal deposits is significant for the resource base of Polish coking coal because Poland belongs to the largest producers of coke worldwide (the position among the first ten countries) and is one of the top exporters of coke both in Poland and the world. The largest producer of the highest quality coke is Jastrzębska Spółka Węglowa SA (Jastrzębie Coking Coal Company – JSW SA). In the few years (from about 2017) there will begin exploitation of coking coal from the new deposit
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