Application of thermally stimulated acoustic emission method to assess the thermal resistance and related properties of coals

Traditional methods of coal thermal resistance characterization are informative but considerably timeconsuming and require utilization of a complex and expensive equipment.This limits the effectiveness of their application.In this paper,authors experimentally investigated potential application of th...

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Bibliographic Details
Published in:International journal of mining science and technology 2018-03, Vol.28 (2), p.243-249
Main Authors: Novikov, E.A., Oshkin, R.O., Shkuratnik, V.L., Epshtein, S.A., Dobryakova, N.N.
Format: Article
Language:English
Subjects:
Acoustic
Acoustic emission
coal
Thermal
Cryogenic disintegration
disintegration
Structure
Properties
emission
Fossil
Fossil coal
Properties
resistance
Cryogenic
Structure
Thermal resistance
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Summary:Traditional methods of coal thermal resistance characterization are informative but considerably timeconsuming and require utilization of a complex and expensive equipment.This limits the effectiveness of their application.In this paper,authors experimentally investigated potential application of thermally stimulated acoustic emission method for developing of relatively simple and rapid coals thermal resistance assessment method.Features of thermally stimulated acoustic emission of anthracite,lignites and bituminous coal samples subject to cyclic thermal loading have been experimentally investigated.For the first time,it has been shown that there exists a relationship of such patterns with structural parameters and properties of the coal samples,as well as their thermal resistance.The results indicate the possibility of applying the method of thermally stimulated acoustic emission to control processes of cryogenic disintegration and thermal resistance of fossil coals.The description of the equipment and methodological support needed for the implementation of this method have been provided.
ISSN:2095-2686
DOI:10.1016/j.ijmst.2017.12.019