87 高温in-situ NMRマイクロイメージング法による石炭軟化溶融過程の解析

抄録

Thermally induced changes in coals are interest from the standpoints of both fundamental and applied research for iron-making process. Furthermore, for very inhomogeneous coals, there is a fascination in the study about the influence of thermal dynamical changes. To monitor the dynamical changes in coals with temperature, an in-situ method must be used, because it is well-known that the properties of coals change dramatically in high temperature range (from 350 to 550℃). Therefore, in this paper, we at first are demonstrating 3D-Single-Point-Imaging which has shown to be successful for studying short relaxation time systems and which is free from distortions due to susceptibility variations for coals. And we have carried out the first systematic in-situ high-temperature NMR microimaging study. of coals between 25 and 550℃ with our newly developed high temperature microimaging probe with systems to clarify the behavior of mobile component at high temperature in coal specimens.