Koveria A. Development of the express method for assessment of the technological properties of coals and their blends by the indices of dynamics of swelling pressure and prediction of coke quality

The results of theoretical and experimental researches of thermochemical transformations in anthracite coals are presented for defending. The goal of research was estimation of coals properties as raw material for coking and prediction of coke quality on the bases of indices of dynamics of swelling pressure. A complex method which allows operatively to define technological properties of coals and coal charge for coking and makes it possible to forecast the quality of coke has been developed. The new parameters for technological assessment of coals and their blends are proposed. The laws of change of indexes of dynamics of swelling pressure depending on natural properties of coals, on technological factors and other caking parameters were established. The effect of interaction of different coals is estimated based on the indexes of dynamics of swelling pressure. The relationship between the quality of coke and the change of indexes of dynamics of swelling pressure of coal blends was established. The obtained dependences can be used to predict the quality of coke. A complex method for the express assessment of coal concentrates and coal charge for coking is introduced to the coke plant the CherMC JSC "Severstal" (Cherepovets, Russian Federation). Materials of the dissertation used in the educational process at the Department of metallurgical fuel and restorers of the National Metallurgical Academy of Ukraine, at the Department of chemical technologists of fuel of the Ukrainian State University of Chemical Technology and at the Department of Technology of Fuel and carbon materials of the NTU Kharkov Polytechnic Institute.