Gayevyj V. Substantiation of Technological Parameters Under Gravity-Electrochemical Desulphurization of Mineral Coals

It was made comparative analysis and principles which had been used for development of general technologies of gravity and chemical coal desulphurization. It was established that improving of fine coal efficiency desulphurization is possible by means of gravity-electrochemical technology utilization. Such technology had been developed on the basis of its working parameters substantiation.The analysis of hydrodynamical and kinetical conditions under separation of pyrite and mineral complexes on the spiral surface and the theoretical fundamentals of coal electrochemical desulphurization have been developed. It was shown that pyrite grains recovery efficiency under wet spiral separation is determined by transverse circulation velocity which influences also on the kinetics of this process. Treatment of water-coal suspension in the field of glow electrical discharge that supply arising of hydrogen peroxide which oxidizes uncovered after gravity preparation pyrite sulfur that allows to decrease its content t o 50%.