Gorobets L. Development of scientific foundations for the solid minerals grinding

The dissertation is devoted to the development of theoretical foundations, the prognostication of grinding technology parameters, creating of the efficient grinding technology. The new theoretical approach to the grinding research from the point of view the dispersion physical dependences, by studying of the overlimited deformation and destruction stage, is offered. The physical dependences generalized for different scale levels, the principles and the criteria of surface formation process during loaded body destruction are formulated. The analitycal dependences for the grinding characteristics prognosis estimation are obtained as a result of energy analysis of the natural materials deformation and destruction using loading diagrams. The natural energetic properties of mining ores and minerals have been originally researched by the method of three-axes irregular-component compression. The functional and correlating links of the grinding characteristics with deformation, destruction and acoustic radiation are determined, the corresponding dependences forming the prognostication basis are revealed. The technique for acoustic-emission prognostication of such energy capasity and dispersion effects, as the destroyed particles specific size, the corresponding output and the ground particles fracture surface. The modes that increase the dispersion efficiency, intensify the mechanical activation, improve the ground material technological properties are determined. The grinding and mechanical activation modes grounded scientifically are realized on the gas jet grinding example. Their usage have been researched during experiments, the efficiency have been proved by tests and industrial application of different solid minerals grinding.