The microstructure of semi-cokes and cokes of Donetz low-rank coals of different genetic types

Thechemistry of low-rank coals of the same rank but different genetic types (reduced - RC, and low-reduced - LRC) have been studied. It has been shown that the coals of RC type give fritted and less compact semi-cokes with a higher volume of pores and lesser relative content of walls. Data from optical microscopy agrees with that of the yield of vapour-gas products of semi-coking from differential thermal analysis and DRIFT-spectroscopy.