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Evaluation of cross-correlation relationship between coal characteristics and technological and textural parameters of cokes
Serenčíšová, J. ; Vontorová, J. ; Klika, Z. ; Kožušníková, Alena
This paper deals with the statistical evaluation of the basic characteristics of 26 coal samples and cokes produced and delivered by coking plant Zabrze in Poland. The aim of this study was to evaluate the following correlation relationships between chemical (Ad, Sd, Cla, Pd) and petrographic composition of coal (the content of vitrinite, inertinite, liptinite) and coalification degree (Vdaf, Rr) together with coking parameters (contraction a, dilatation b, swelling index SI) in relation to textural (TIV - total intrusion volume, TPA - total pore area, APD - average pore diameter, BD - bulk density, PS - total porosity), chemical (Ad, Vdaf ) and technological parameters (CRI, CSR) of cokes. The results are discussed and compared with previous studies.
Fulltext: content.csg -  DOC
Plný tet: UGN_0398253 - DOC
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Secondary minerals origined on burning coal waste piles in selected coal basins in the Czech Republic
Martinec, Petr ; Klika, Z.
In this paper the existence of coal waste pile have been divided into various stages. Four of these stages (A, B, C and D) belong to stage of coal waste pile heating. Whereas stage A run at the ambient low temperature the stage D run at very high temperature (above 900°C). The fifth stage E follows cooling period and sixth stage F interaction of coal waste pile with injected material that is added to burning coal waste pile in order to decrease its temperature. Each stage is characterized by various condition at which new secondary minerals are formed. Some of them are typical just for related stages of coal waste pile existence.
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