Pyrolysis of low-reduced and reduced coals of different ranks


Authors: Butuzova L, Marinov SP, Minkova VN, Safin VA, Stefanova MD, Stamenova VV

Published in: Bulletin of Geosciences, volume 80, issue 1; pages: 15 - 18; Received 30 July 2004; Accepted in revised form 4 January 2005;

Keywords: reductivity, coalification, pyrolysis, desulphurisation, adsorption activity,

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Reduced and low-reduced pairs of isometamorphic coals spanning the whole coalification series have been studied. A comparative determination of the yields and properties of the products of various pyrolysis processes has been carried out. A high reactivity for reduced coals in coking and leaching processes was indicated. The solid products of steam pyrolysis were characterized by well developed surfaces, the values of which depend of the coal type by reductivity and coal rank. Desulphurisation effects from thermal treatment were recorded for all samples.