Year: 2025
Type: article
Abstract: The quality of interface bonding between inert maceral derived components (IMDC) and reactive maceral derived components (RMDC) in coke made from a variety of coal blends was quantified based on micro-CT images. A novel micro-CT image processing algorithm was developed to identify the boundary of IMDC and to determine the porosity profiles in the vicinity of IMDC surface. The bonding quality was assessed using excess porosity which is the difference between the peak and averaged porosity around IMDC surface. High excess porosity values indicate poor RMDC-IMDC bonding, while low or even negative excess porosity values indicate good quality bonding. Poor bonding with IMDC only occurs with one type of RMDC from a low- volatile matter high-rank parent coal. Further examination into this RMDC series indicates dependence of the excess porosity on the internal IMDC particle porosity at low IMDC phase density, combined with a lack of fusible material near the surface of the IMDC. The fusible material improves bonding, while low porosity near the IMDC inhibits bonding.
Source: ISIJ International
Authors: Ai Wang, David Ronald Jenkins, Arash Tahmasebi, Karen Steel, Tara Congo, Bert Gols
Language: English
Subfield: Fuel Technology
Field: Energy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $700
OpenAlex ID: W4410736209