Deineka K. The ball-tube mills efficiency rising based on the intrachamber filling pulsation use

The thesis is devoted to the research of ball-tube mills operating conditions when intrachamber filling fluctuation. The rotating drum intrachamber granular filling self-excitation mechanism was considered. The steady-state mill machine movement asymptotic stability conditions and the filling shifting flow stability conditions were determined. It was been established that the centroidal moment of inertia and the antitorque moment variations, the dilatation and the grinding material particles damping action on filling elements are the instability factors. The pulsation activation conditions were established. The opportunity of raising the energetic rate of milling, for grinding intensification, was advanced through the optimum unstable filling flow creation. Based on the results of the research the new ball-tube mills processes and the basic structural parameters were developed. The pulsing filling flow self-excitation and the rotational speed variation, as a fundamental effect on mills operation, were used. Key words: ball-tube mills, operating conditions, intrachamber filling, pulsations, filling flow instability, stability conditions, granular medium, dilatation, grinding material, milling intensification.