A Study on the Hard Coal Grindability Dependence on Selected Parameters

Krzysztof Kogut, Vladimir Cablik, Piotr Matusiak, Daniel Kowol, Tomasz Suponik, Dawid M. Franke, Barbara Tora and Radosław Pomykała
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Krzysztof Kogut: Faculty of Energy and Fuels, AGH University of Science and Technology, 30 Mickiewicz Ave., 30-059 Kraków, Poland
Vladimir Cablik: Faculty of Mining and Geology, VSB—Technical University of Ostrava, 70800 Ostrava, Czech Republic
Piotr Matusiak: KOMAG Institute of Mining Technology, 37 Pszczyńska St., 44-100 Gliwice, Poland
Daniel Kowol: KOMAG Institute of Mining Technology, 37 Pszczyńska St., 44-100 Gliwice, Poland
Tomasz Suponik: Faculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, 2A Akademicka St., 44-100 Gliwice, Poland
Dawid M. Franke: Faculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, 2A Akademicka St., 44-100 Gliwice, Poland
Barbara Tora: Faculty of Civil Engineering and Resource Management, AGH University of Science and Technology, 30 Mickiewicz Ave., 30-059 Kraków, Poland
Radosław Pomykała: Faculty of Civil Engineering and Resource Management, AGH University of Science and Technology, 30 Mickiewicz Ave., 30-059 Kraków, Poland

Energies, 2021, vol. 14, issue 23, 1-9

Abstract: A very important aspect of proper preparation of the coal mixture for the coking process is its appropriate grinding. One of the parameters describing the energy input required for grinding is the Hardgrove index. This research was undertaken to determine the dependence of the Hardgrove grindability index on selected physicochemical properties of coal. The Hardgrove grindability index was determined using the available methods described in the standards, and the dependence on selected parameters was examined. A clear positive correlation with calorific value and smaller (also positive) correlations with moisture content and free swelling index was obtained. A slight negative correlation was also obtained with sulfur content.

Keywords: coal; coking; grindability; Hardgrove index; GrH; HGI (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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