Open AccessThe Influence of Plastic Properties of Coal Blends on Evolution of Reflectance Indicating Surface (RIS) Parameters of Cokes
Author(s) -
Ł. Smędowski
Publication year - 2012
Publication title -
contemporary trends in geoscience
Language(s) - English
Resource type - Journals
eISSN - 2299-8179
pISSN - 2084-5707
DOI - 10.2478/ctg-2012-0010
Subject(s) - texture (cosmology) , materials science , reflectivity , anisotropy , coal , optical microscope , composite material , plasticity , optics , chemistry , scanning electron microscope , organic chemistry , physics , artificial intelligence , computer science , image (mathematics)
The aim of this work was to characterize cokes optical texture influence of plastic properties of coal blends on degree of cokes optical texture ordering. Three samples of coal blend characterized by different composition and properties were pyrolysed in Karbotest furnace (laboratory scale). To characterize plastic properties of the blends studied, temperatures at the beginning, maximum and at the end of plasticity (t 1 , t max and t 3 , respectively) were determined as well as maximum fluidity F max . Texture of resultant cokes was determined by means of optical microscopy. As the result of these studies a set of optical parameters that describe reflectance indicating surface such as maximum, intermediate and minimum reflectance (R MAX , R INT , R MIN respectively) as well as values of Killby’ transformates (R st , R am , R ev ) were determined for each sample. The optical texture parameters of the cokes were discussed in relationship to plastic properties of coals blends. Correlation between cokes anisotropy and fluidity of initial blends was detected.