32.NMRによるSCOPE急速加熱処理のメカニズムの解明

抄録

A new carbonization process with rapid preheating and coke discharging at medium temperature has been developed in Japan. The result of this process shows that even when no or slightly coking coal is by 50wt% the coking property is improved and a coking coke with cold strength usable at blast furnace can be manufactured with the new carbonization process. The mechanism of the coking property improvement was examined by coal properties with using mainly solid state NMR (^1H CRAMPS and ^<13>C SPE/MAS, CP/MAS) and NMR imaging (Single Point Imaging, in-situ Imaging). It has been clarified that the molecular structure of coal is relaxed by the rapid heating treatment and in addition there is a close relation in hydrogen bond and relaxation of molecular structure of coal.