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Погіршення якості концентратів в основному відбувається внаслідок утворення мікронних техногенних зростків. Запропоновано використання високоенергетичного ультразвуку в кавітаційному режимі для очищення поверхонь мінералів. Доведено, що ефективність ультразвукової обробки пов'язана з оновленням поверхонь часток, що призводить до збільшення контрастності магнітних і флотаційних властивостей мінералів. Виконано розрахунок пристрою формування високоенергетичного ультразвуку Ключові слова: ультразвуковий вплив, очищення мінералів, залізна руда, кавітаційний режим, техногенні зростки Ухудшение качества концентратов в основном происходит в результате образования микронных техногенных сростков. Предложено использование высокоэнергетического ультразвука в кавитационном режиме для очистки поверхностей минералов. Доказано, что эффективность ультразвуковой обработки связана с обновлением поверхностей частиц, что приводит к увеличению контрастности магнитных и флотационных свойств минералов. Выполнен расчет устройства формирования высокоэнергетического ультразвука Ключевые слова: ультразвуковое воздействие, очистка минералов, железная руда, кавитационный режим, техногенные сростки

The article highlights peculiarities of geoinformation technologies’ application in course of pre-service engineers’ training for sustainable development, their functionalities, geoinformation system’s role and position in environmental protection acts. Concepts of geoinformation technologies, geoinformation system have been disclosed. The pedagogical experiment was done concerning introduction of the developed method of using geoinformation technologies as means of forming environmental competence profile mining engineers predicted an experemental studying on course «Environmental Geoinformatics». The results of the expert assessment of rational using geoinformation technologies there were given to create an ecological competence of future mining engineering profile.

Introduction.Mining is a rather energy-intensive industry because of severe conditions of technological processes with energy consumption optimized by engineering modernization, for instance, by producing settable mixes and processing their components to obtain the required size and activity.Problem Statement. Reducing energy consumption while escalating production, energy efficiency of technological processes and cost reduction in energy supply are relevant problems for mining industry, which determine the competitiveness of a mining corporation.Purpose. The research aims at determining the effect of disintegration and increased activity of ore minerals on energy consumption by mining enterprise.Materials and Methods. Efficiency of mechanical activation is conditioned by difference in strength of concrete based on basic and activating binding materials. Efficient combination of technologies has been found as optimal solution taking into consideration variable factors, including energy consumption. The range of optimal values of binding materials has been found by solving the equations describing the obtained regularities.Results. The research presents the results of industrial experiment aiming at replacing the binding components of concrete mixes by the activated blast-furnace slag. The quantitative indicators and regularities of electric energy consumption necessary to activate components of settable mixes have been determined. The obtained data have been used to simulate mix design at one of Norilsk enterprises. The general regularities of mechanical activation efficiency have been established and a concept and an algorithm of efficient energy consumption while activating mining production wastes have been formulated.Conclusions. For the demographic factors of the development, the mining industry will increase energy-intensity of industrial processes. When transiting to underground deposit mining, production of settable mixes will result in increased energy consumption. Efficient energy consumption in energy-intensive industrial processes becomes especially important. In the specified conditions, optimized energy consumption facilitates the recovery of costs for mining diversification.

The research deals with metal extraction from off-grade ores and concentration tailings. There are provided results of simulating parameters of reagent leaching of metals in the disintegrator according to the metal recovery ratio. The research substantiates the method of waste-free processing of chemically recovered ores. Recovery of metals into solution is the same both under multiple leaching of tailings or ore in the disintegrator and agitation leaching of tailings or ore previously activated in the disintegrator with leaching solutions. The time of agitation leaching is more by two orders of magnitude than that of the disintegrator processing. Recovery of metals into solution is most affected by the content of sodium chloride in the solution. Then, in decreasing order, go the content of sulfuric acid in the solution, the disintegrator rotor rpm and L:S ratio.

The research is intended to investigate and synthesize adaptive control over drilling by identifying parameters of an object model under non-stationarity conditions. Methods. Under conditions of rapidly changing borehole drilling indices, a two-level adaptive control strategy is applied, combining investigation of drilling and its control. The structure of the control system includes an additional block of forming the model on the basis of data on indirect features. Findings. The research develops a method for seeking the extremum developed for the object whose dynamics is described by a first-order linear differential equation. The method allows to determine the value of the output signal by evaluating the initial phase of the transient process caused by the changed input signal for a set step. Originality. The suggested algorithm of noise-free identification makes it possible to assess the factor of the control object transfer under the action of random disturbances. The data obtained is used to adjust the gain factor of the controller in the closed loop automatic control system of drilling. Practical implications. The suggested structure and algorithm of drilling control allow enhancing drilling efficiency by ensuring relevant mechanical drilling rates through defining corresponding rotation speeds and axial loads of a drilling tool.

Non-linear, dynamic, non-stationary properties characterize objects of the iron ore beneficiation line. Therefore, for their approximation, it is advisable to use models of the Hammerstein class. As a result of comparing the three models of Hammerstein: simple, parallel and recursive-parallel, it was shown that the best result for identifying the considered processes of magnetic beneficiation of iron ore by the minimum error criterion was obtained using the Hammerstein recursive-parallel model. Hence, it is recommended for the identification of beneficiation production objects.

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