Geologica Belgica

1374-8505 2034-1954

 

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Zbigniew FĄFARA, Stanisław RYCHLICKI & Kazimierz TWARDOWSKI

INDIRECT METHOD FOR EVALUATING LIGNITE MOISTURE

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Mots-clés : coal properties, linear regression, prediction model.

Abstract

The inherent moisture of lignites is an important property in combustion of coal. The literature abounds in numerous models for assessing this property based on the known values of other properties, which are determined using standard methods. As a rule, these correlations are only valid for coals from the same deposits. Based on sixteen Polish and one Australian lignite samples, an attempt was made to create a universal regression model for predicting the inherent moisture of lignites based on ash content and depth of deposition. A non-linear asymptotic model is elaborated. Its verification shows a high geological effectiveness.

To cite this article

Zbigniew FĄFARA, Stanisław RYCHLICKI & Kazimierz TWARDOWSKI, «INDIRECT METHOD FOR EVALUATING LIGNITE MOISTURE», Geologica Belgica [En ligne], volume 7 (2004), number 3-4 - Proceedings of the 5th European Coal Conference, 345-349 URL : http://popups.ulg.ac.be/1374-8505/index.php?id=467.

About: Zbigniew FĄFARA

Cracow University of Mining and Metallurgy, 30 Mickiewicza Av., 30059 Krakow, Poland. E-mail : fafara@uci.agh.edu.pl

About: Stanisław RYCHLICKI

Cracow University of Mining and Metallurgy, 30 Mickiewicza Av., 30059 Krakow, Poland

About: Kazimierz TWARDOWSKI

Cracow University of Mining and Metallurgy, 30 Mickiewicza Av., 30059 Krakow, Poland