The dissertation is devoted to solving an important scientific and technical problem - the development of scientific foundations of the process of vibro-shock dehydration of techno genic raw materials, which consists in establishing the regularities of the movement of liquid and particles through a layer of raw materials and through a sieving surface, taking into account their random nature, depending on the changing granulometric composition of raw materials, particle density and liquid, vibration impact parameters, which made it possible to create new methods for effective dehydration and separation, as well as calculation methods and recommendations for the choice of rational modes, the introduction of which ensured the expected economic effect from the use of developments UAH 969544, which is essential for increasing the efficiency of work mining enterprises.
On the basis of the established regularities of the movement of liquid and particles through the layer of raw materials and through the sieving surface, taking into account their random nature, depending on the changing granulometric composition of the raw materials, the density of particles and liquid, the parameters of vibro-impact action, the scientific foundations of vibro-impact dehydration and separation by size have been developed. For the first time, the effectiveness of the impact on the screening surface at the stage when the processed raw material is not in contact with it has been substantiated. In the development of the theory of vibro-impact dehydration, the regularities of the probabilities of the transition of a liquid through a layer of raw materials from the probabilities of fulfilling the energy and geometric conditions were obtained. For the first time, the influence of disintegrating elements on the probabilities of liquid transitions through a layer of raw materials and cells of a sieving surface is described. In the development of the theory of vibration dehydration, the dependences of the probabilities of the passage of liquid through the cells on the probability of remaining on the sieving surface and the number of interactions of the raw material with it were obtained. For the first time, dependences were obtained that describe the effect of moisture on the probability of particle movement through a layer of raw materials. For the first time, a mathematical model of the kinetics of dehydration with the separation of technogenic raw materials of varying granulometric composition was developed, which comprehensively takes into account the initial distribution of liquid and particles along the height of the raw material layer, segregation, screening, vibration transport features (speed, frequency and number of falls during the period of vibration transportation) and the change in layer height.
A set of methods for calculating the parameters of the dehydration process of techno genic raw materials of varying particle size distribution has been developed and introduced into the practice of scientific research, design and design work, mining enterprises and the educational process, new methods of dehydration and size separation of various raw materials have been created.
The expected economic effect, obtained by improving the quality of marketable products, reducing its moisture content, reducing electricity costs for separation by size and dehydration, is UAH 969,544.
