Jirma S. Substantiation of the parameters of buffer rubber linings of the working surface of ball mill drums

The Object of research: the working process of interaction of grinding objects with rubber lining elements of modern ball mills. Purpose of research: enhancement of technological and operating characteristics of ball mills on the basis of buffer rubber lining application, which effective usage was substantiated by detecting the principles of interaction of this lining with grinding balls. Method of research: are based on the principles of strike theory, the theory of flexibility and vibration of warping systems. The experimental part of work includes the methods of physical modeling, experiment planning and organization. Equipment: vertical optimeter, electronico-mechanical measuring system, computer techniques. Theoretical and practical results: the mathematical model permitting the research of impact load processes of buffer rubber linings was elaborated. The scientifically based engineer methods of the buffer rubber linings calculation realized as a computer programs were elaborated. The constructions of buffer rubber linings of cylindrical part of the drums of ball mills were elaborated too. New offered: the analytical dependences of impact interaction of drinding bodies with buffer rubber linings of the drums of ball mills were obtained; the changing possibility of the parameters of impact interaction of grinding bodies with rubber linings elements of the ball mills drums owing to their constructive execution was theoretically based and experimentally corroborated; teoretically and experimentally it was proved the efficiency of the introduction of air clearances and priant support ribs in the lining mills construction, it was determined that they permit to decrease the impact loads and deformations. Level of application: these were inculcated on the building materials Sokolovsky plant "Keramik" (Kirovograd). The work results were used in the training of the mechanical specialities students of the Kirovograd State Technical University, the Ukrainian National Academy of Mines, the State Construction andArchitecture Academy of the Dnieper and were used by the Geotechnical Mechanics Institute of the Ukrainian Academy of Sciences. Field of applications: machines for the production of building materials and constructions.