Abstracts of the papers published in Tetsu-to-Hagane Vol. 104 (2018), No. 10

摘要

In our previous paper, a new measurement method for coal thermoplas-ticity, "permeation distance method", was devised. Permeation distance of thermally plastic coal into glass beads layer adjacently placed on the coal sample was measured as a unique caking property. The maximum permeation distance measured is roughly correlated with Gieseler fluidity, however large deviation is observed especially in high fluidity coals. Moreover, it was revealed that high MF coal having longer maximum permeation distance forms thinner pore-wall structures in coke and that coke strength deteriorated when the coal blend included longer maximum permeation distance coal. Therefore, technique for reducing the adverse effects of long maximum permeation distance coal on coke strength is necessary so as to utilize the coal more efficiently.