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Title: Elastic and optical anisotropy of the single-coal monolithic high-temperature (HT) carbonization products obtained on a laboratory scale

Abstract

The aim of the present study was to investigate the directional dependences of the elastic and optical properties of monolithic single-coal high-temperature (HT) carbonization products obtained on a laboratory scale (with very slow heating rate) from coals of different caking propensity. Sixteen monolithic HT carbonization products, mainly cokes, were produced in the Jenkner retort furnace using 16 various types of coals of varying rank (from 83.1 wt % carbon to 98.3 wt % carbon) with a Roga index (RI) in the range of 0-76. Coals were carbonized in the form of monolithic blocks. The physical parameters such as true density, porosity, ultrasonic velocity, and dynamic elastic moduli, as well as optical reflectance parameters (R{sub max}, R{sub min}, R{sub am}), were determined for the resultant products. The elastic and optical properties of the HT carbonization products were related to their porosity and the rank of the parent coals. It was determined that the HT carbonization products exhibit the different directional properties of the studied parameters, and they can be divided into three groups, with respect to the observed differences. The properties of these groups were related to the parent coal rank and the caking propensity (i.e., to the RI value). Anisotropymore » of the coke matrix structure was determined to be important for discussion about the anisotropic properties of cokes. 50 refs., 9 figs., 4 tabs.« less

Authors:
; ;  [1]
  1. Polish Academy of Sciences, Gliwice (Poland). Institute of Coal Chemistry
Publication Date:
OSTI Identifier:
20674543
Resource Type:
Journal Article
Journal Name:
Energy and Fuels
Additional Journal Information:
Journal Volume: 19; Journal Issue: 5; Other Information: marta@karboch.gliwice.pl; Journal ID: ISSN 0887-0624
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; ANISOTROPY; ELASTICITY; OPTICAL PROPERTIES; COAL; CARBONIZATION; CAKING POWER; COKE; COAL RANK

Citation Formats

Krzesinska, Marta, Pusz, Slawomira, and Koszorek, Andrzej. Elastic and optical anisotropy of the single-coal monolithic high-temperature (HT) carbonization products obtained on a laboratory scale. United States: N. p., 2005. Web. doi:10.1021/ef040074m.
Krzesinska, Marta, Pusz, Slawomira, & Koszorek, Andrzej. Elastic and optical anisotropy of the single-coal monolithic high-temperature (HT) carbonization products obtained on a laboratory scale. United States. https://doi.org/10.1021/ef040074m
Krzesinska, Marta, Pusz, Slawomira, and Koszorek, Andrzej. 2005. "Elastic and optical anisotropy of the single-coal monolithic high-temperature (HT) carbonization products obtained on a laboratory scale". United States. https://doi.org/10.1021/ef040074m.
@article{osti_20674543,
title = {Elastic and optical anisotropy of the single-coal monolithic high-temperature (HT) carbonization products obtained on a laboratory scale},
author = {Krzesinska, Marta and Pusz, Slawomira and Koszorek, Andrzej},
abstractNote = {The aim of the present study was to investigate the directional dependences of the elastic and optical properties of monolithic single-coal high-temperature (HT) carbonization products obtained on a laboratory scale (with very slow heating rate) from coals of different caking propensity. Sixteen monolithic HT carbonization products, mainly cokes, were produced in the Jenkner retort furnace using 16 various types of coals of varying rank (from 83.1 wt % carbon to 98.3 wt % carbon) with a Roga index (RI) in the range of 0-76. Coals were carbonized in the form of monolithic blocks. The physical parameters such as true density, porosity, ultrasonic velocity, and dynamic elastic moduli, as well as optical reflectance parameters (R{sub max}, R{sub min}, R{sub am}), were determined for the resultant products. The elastic and optical properties of the HT carbonization products were related to their porosity and the rank of the parent coals. It was determined that the HT carbonization products exhibit the different directional properties of the studied parameters, and they can be divided into three groups, with respect to the observed differences. The properties of these groups were related to the parent coal rank and the caking propensity (i.e., to the RI value). Anisotropy of the coke matrix structure was determined to be important for discussion about the anisotropic properties of cokes. 50 refs., 9 figs., 4 tabs.},
doi = {10.1021/ef040074m},
url = {https://www.osti.gov/biblio/20674543}, journal = {Energy and Fuels},
issn = {0887-0624},
number = 5,
volume = 19,
place = {United States},
year = {Sat Oct 01 00:00:00 EDT 2005},
month = {Sat Oct 01 00:00:00 EDT 2005}
}