LABORATORY STUDY OF COAL CORes. POROSITY DETERMINATION BY DIFFERENT METHODS
O. M. Usol'tseva, S. V. Serdyukov, P. A. Tsoi, L. A. Rybalkin, V. N. Semenov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Лабораторный эксперимент, уголь, пористость открытая, общая, поверхностная, Laboratory experiment, coal, open porosity, total porosity, surface porosity
Abstract
This study presents the series of experiments to determine porosity of coal samples using three methods: open porosity based on the fluid saturation (kerosene) method according to GOST 26450.1-85, surface porosity from the surface of polished section under ultraviolet light using Mineral-7 complex); and total porosity by tomographic method with the MST-05 NMR relaxometer. The porosity analysis revealed that traditional method yields essentially lower results. To correctly determine the porosity (open and total) characteristics it is necessary to use the integration of the above 3 methods, with an emphasis on one of them, depending on further applications of these characteristics.
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