TY - GEN
T1 - An experimental investigation of factors related to coke strength degradation in coke milli-structure
AU - Kanai, Tetsuya
AU - Yamazaki, Yoshiaki
AU - Hiraki, Kenichi
AU - Zhang, Xiaoqing
AU - Shoji, Masakazu
AU - Aoki, Hideyuki
AU - Miura, Takatoshi
PY - 2010
Y1 - 2010
N2 - In order to clarify the factors related to coke strength degradation, relationship between coke strength and pore structure is quantitatively investigated. The tensile strength of coke is measured by diametral-compression test and analyzed by Weibull plot. Pore structure is analyzed with wide range(10 mm×10 mm) and high resolution(2.43 μm/pixel) photographs which are acquired by combining approximately 20 photographs. Absolute maximum pore length, pore area ratio and pore roundness are measured by image analysis of the photographs. By comparison of strength and absolute maximum pore length in coke, strength is degraded with an increase in area ratio of pores over 1000 μm in absolute maximum length. From image analysis, it is found that the pore roundness decreases with an increase in absolute maximum length. The length of 1000 μm corresponds with the critical crack length calculated by Griffith equation in scale.
AB - In order to clarify the factors related to coke strength degradation, relationship between coke strength and pore structure is quantitatively investigated. The tensile strength of coke is measured by diametral-compression test and analyzed by Weibull plot. Pore structure is analyzed with wide range(10 mm×10 mm) and high resolution(2.43 μm/pixel) photographs which are acquired by combining approximately 20 photographs. Absolute maximum pore length, pore area ratio and pore roundness are measured by image analysis of the photographs. By comparison of strength and absolute maximum pore length in coke, strength is degraded with an increase in area ratio of pores over 1000 μm in absolute maximum length. From image analysis, it is found that the pore roundness decreases with an increase in absolute maximum length. The length of 1000 μm corresponds with the critical crack length calculated by Griffith equation in scale.
UR - http://www.scopus.com/inward/record.url?scp=84877635061&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84877635061
SN - 9781617823213
T3 - 27th Annual International Pittsburgh Coal Conference 2010, PCC 2010
SP - 1925
EP - 1931
BT - 27th Annual International Pittsburgh Coal Conference 2010, PCC 2010
T2 - 27th Annual International Pittsburgh Coal Conference 2010, PCC 2010
Y2 - 11 October 2010
ER -