Makovskyi R. Basics for inclusion of coals of different genetic types by reductivity and their mixtures in the coke blends

The work is devoted to the development of scientific bases for sulfur coals inclusion in the coking blends, as well as the identification of general regularities of plastic layer and coke properties formation during the pyrolysis of coals of different genetic types by reductivity (GTR) and their blends. Extracts of the plastic layer of fat and gas coals of different GTR and their blends have been studied comprehensively for the first time. Coal blends with all possible combinations of two pairs of isometamorphic coals of different sulfur levels were pyrolysed in centrifugal field, allowing to be separated into soHd, fluid and gaseous products. It is proved that reactions leading to the formation of the plastic layer, occur with the participation of free radicals. Using the EPR and DRIFT-spectroscopy methods the structural peculiarities of the obtained products have been studied. An apparent relation between the content of sulfur in coal, paramagnetic centers in plastic layer and coal coking ability was established. It has been established that proportion of carbenes сarboides/ malthenes in the extracts of liquid mobile products of thermal filtration of coals and blends correlates to the yields of the above products.