Tailings formed during the mining and beneficiation of iron ore are sources of intensive dust generation. In order to assess the intensity of dust formation and determine the effectiveness of methods of its reduction, it is necessary to know the local velocity of the air flow near the various surfaces of the tailings storage facility. For the theoretical solution of this problem, a CFD model was developed, which allows determining the velocity field of the air flow when flowing around the tailings storage facility. The model allows you to obtain the value of the wind speed near the surfaces of the structure and, based on this information, to make a forecast of possible dust formation. The constructed CFD model is based on the use of an aerodynamic model of potential motion. The modeling equation is the Laplace equation for the velocity potential. To build a numerical model, the idea of establishing a solution in time is used, therefore numerical integration of the “unsteady equation” for the velocity potential is carried out. Numerical integration is carried out using the finite-difference method of total approximation. The results of the computational experiment are presented.

Purpose. Justification of hydraulic systems management methods of mining and metallurgical plants, taking into account indicators and comparative analysis and on the basis of pipelines rational parameters and slurry concentrates.. Methodology. Analysis of modern methods for assessing the efficiency of operation of hydraulic systems of enterprises in the mining and metallurgical industry allowed us to determine the promising directions for the use of various chemical reagents in order to reduce hydraulic resistance during transportation of hydraulic mixtures in mineral processing technologies. Findings. The rational parameters of the operation of hydraulic systems of mining and smelting plants, namely: the diameter of the pipeline and the concentration of the slurry for a given amount of transportation to ensure a minimum of reduced costs for the evaluation period and taking into account the usage of chemicals which were used to improve the efficiency of pipeline transport. Originality. Based on the analysis of methods for assessing the effectiveness of mineral processing technologies. It is determined that the most rational in the totality of technologies to improve the efficiency and reliability of the hydrotransport complex is the use of polyethylene pipes, as well as additives to the carrier fluid of hydrodynamically active substances. Practical value. It consists in the improvement of methods for calculating rational parameters and modes of operation of hydraulic systems, allowing to determine the value of the velocity and concentration of the slurry, providing a minimum of reduced costs for the estimated period. These methods are adapted for the case of using polyethylene pipes, taking into account additives to the carrier fluid of hydrodynamically active substances, taking into account the reduction of reduced costs due to diagnosing the technical condition of the equipment, as well as allowing to optimize maintenance costs.