Sulfur in fossil coals as a factor of hazardous properties of coal seams

Е. Rudnev, V. Galchenko, Е. Filatyeva, М. Antoshchenko
Received 30.05.2021, Revised 08.10.2021, Accepted 19.11.2021, Published 17.12.2021
Abstract

To develop a method for determining the sets of coal seams that differ from each other in the content of sulfur in the organic and mineral parts of coals and to prove the possibility and necessity of using the results of these studies to predict the hazardous properties of coal seams. Research method is based on a preliminary consideration of the ratio of the content of total sulfur and sulfur in the combustible mass, and then their recalculation from a dry state to a state close to the conditions of mining operations with the involvement of coal moisture and ash yield for seam (unenriched) and enriched samples. This approach made it possible to obtain additional information on the effect of the processes of preparing coal samples for their analysis on the dry ash-free state of the fuel and to establish the effect of these processes on the sulfur content in the organic mass and mineral impurities, which is necessary for a reliable prediction of the hazardous properties of coal seams. The content of total sulfur in organic matter and mineral impurities is not equal, in the general case, to the sum of its content in combustible and non-combustible parts. According to experimental data, any ratio between these indicators is possible for individual coal seams. A different ratio between the sulfur content in the organic mass and mineral impurities compared to its content in the combustible and non-combustible parts allows, according to these features, to produce a gradation of coal seams according to the degree of their possible manifestation of hazardous properties, which is necessary to improve the regulatory framework for the safe conduct of mining operations. The random sulfur content in the organic mass and mineral impurities of the coals of an individual coal seam is one of the reasons for the actual relationship between the main components of the organic mass and mineral impurities, which largely determine the manifestation of the hazardous properties of coal seams during mining operations. The values of the main components for the combustible state given in the reference documents on fuel quality adequately reflect the consumer properties of coals, but do not correspond to their state in the mining area due to the presence of mineral impurities and moisture. Modern normative documents on the safe conduct of mining operations do not consider indicators of the state of coal brought to its initial (working) state.

Keywords:
coal; state; sulfur; organic matter; mineral impurities; combustible part; ratio; hazardous properties; gradation; regulatory framework; safety; improvement

Retrieved from Vol. 19, No. 2, 2021

Pages 21–28

References Suggested citation
  1. Авгушевич И.В., Сидорук Е.И., Броновец Т.М. Стандартные методы испытания углей. Классификации углей. М.: «Реклама мастер», 2019. 576 с.
  2. Onifade, M., and B. Genc. A review of research on spontaneous combustion of coal. International Journal of Mining Science and Technology, 2020, 30(3), 303-311.
  3. Nosal, D., Konovalov S., Shevchenko V. Determination the injuries probability of coal mines workers. Mining of mineral deposits, 2021, 15(2), 47-53.
  4. Tarasov, V., Antoshchenko, M., Rudniev, Y., Zolotarova, O., Davidenko, N. Metamorphism indicators for establishing the endogenic fire hazard of coal mining plants in mining. International Journal of Environmental Science and Developmentthis link is disabled, 2021, 12(8), 242-248.
  5. Греков С.П., Всякий А.А. Влияние содержания серы в углях на вероятность их самовозгорания / Уголь Украины. 2014. №. 4. С. 18-21.
  6. Руководство по предупреждению и тушению эндогенных пожаров на угольных шахтах Украины: КД 12.01.402 - 2000. Донецк : НИИГД. 2000, 216 с.
  7. Справочник по качеству и обогатимости каменных углей и антрацитов Украинской ССР (Донбасс в границах УСССР, Львовско-Волынский бассейн). Характеристика качества каменных углей и антрацитов Украинской ССР. М.: Недра. 1965. 204 с.
  8. Справочник по качеству каменных углей и антрацитов Донецкого и Львовско-Волынского бассейнов. Донецкий научно-исследовательский угольный институт. М.: Недра. 1972. 168 с.
  9. ГОСТ 27313-95 (ИСО 1170-77) Межгосударственный стандарт. Топливо твердое минеральное Обозначения показателей качества и формулы пересчета результатов анализа для различных состояний топлива. Издание официальное. Межгосударственный совет по стандартизации, метрологии и сертификации. Минск. 2003. 15 с.
  10. Antoshchenko M., Tarasov V., Zakharova O., Zolotarova O., Petrov A. Analysis of metamorphism and tendency of black coals to spontaneous combustion. Technology audit and production reserves, 2019, 1(50), 18-25
Rudnev, Е., Galchenko, V., Filatyeva, Е., & Antoshchenko, М. (2021). Sulfur in fossil coals as a factor of hazardous properties of coal seams. Journal of Kryvyi Rih National University, 19(2), 21-28. https://doi.org/10.31721/2306-5451-2021-1-53-21-28
en