A study on the grindability of Serbian coals
| Autor: | B Dejan Radic, Miroslav Stanojević, Dragoslava Stojiljković, O Marko Obradovic, M Aleksandar Jovovic |
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| Rok vydání: | 2011 |
| Předmět: |
Pulverized coal-fired boiler
Waste management Renewable Energy Sustainability and the Environment business.industry 020209 energy technology industry and agriculture Open-pit mining Thermal power station 02 engineering and technology Solid fuel complex mixtures 7. Clean energy respiratory tract diseases Electricity generation 020401 chemical engineering otorhinolaryngologic diseases 0202 electrical engineering electronic engineering information engineering Environmental science Mill Heat of combustion Coal 0204 chemical engineering business |
| Zdroj: | Thermal Science. 15:267-274 |
| ISSN: | 2334-7163 0354-9836 |
| Popis: | Thermal power plants in the Republic of Serbia are making considerable efforts and even more considerable investments, not only to maintain electricity production at maximum design levels, but even to additionally increase the power output of existing generating units. Capacities of mills used in pulverized coal preparation are identified as one of the main constraints to achieving maximum mill plant capacity, while coal grindability is seen as one of the factors that directly affect capacities of the coal mills utilized in thermal power plants. The paper presents results of experimental investigation conducted for the purpose of determining Hardgrove grindability index of coal. The investigation was conducted in accordance with ISO 5074 and included analysis of approximately 70 coal samples taken from the open pit mine of Kolubara coal basin. Research results obtained indicate that coal rich in mineral matter and thus, of lower heating value is characterized by higher grindability index. Therefore, analyses presented in the paper suggest that characteristics of solid fuels analyzed in the research investigation conducted are such that the use coals less rich in mineral matter i. e. coals characterized by lower grindability index will cause coal mills to operate at reduced capacity. This fact should be taken into account when considering a potential for electricity production increase. |
| Databáze: | OpenAIRE |
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