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Список видань за алфавітом назв: Авторський покажчик Покажчик назв публікацій  |
Пошуковий запит: (<.>A=Mladetskyi I$<.>) | |||
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Загальна кількість знайдених документів : 4 Представлено документи з 1 до 4 |
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| 1. | 
Mladetskyi I. K. Control regularities of the useful mineral extraction from ore feed stream with ball grinding. Spectral analysis [Електронний ресурс] / I. K. Mladetskyi, Ya. H. Kuvaiev, N. S. Priadko // Науковий вісник Національного гірничого університету. - 2017. - № 6. - С. 132-138. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2017_6_21 Purpose. Using spectral and frequency analysis methods, to determine the indicative events characterizing a process condition on a control channel "content of useful mineral in ore - content of useful mineral in a concentrate" of ore concentrating plant with ball grinding to exclude the operator from control contour. Methodology. Spectral and frequency analysis of control object. Findings. The analysis of the logarithmic amplitude-frequency characteristic of an enrichment section showed that the control strategy of a section and an ore concentrating plant in general through the "content of useful mineral in ore - content of useful mineral in a concentrate" channel should be based on reaction to a parameter value deviation of saleable concentrate from the set values. The spectral analysis of useful mineral content in ore and saleable concentrate and the frequency characteristics obtained on the basis of commercial operation data allowed allocating some indicative events which characterize an enrichment process condition through the specified control channel. for the en- richment section and concentrating factory in general through the channel described above should be constructed according to the reaction to the deviation of saleable concentrate characteristics from the set ones. The analysis of dispersion spectrum parameters of general iron content in initial ore and a concentrate and amplitude-frequency characteristics through the control channel obtained during commercial operation at an ore concentrating factory has been carried out for the first time. Practical value. The obtained results can be used for creation of automatic system of situational management of an ore dressing process of ferrous and non-ferrous metals both at separate sections with ball crushing and at factories consisting of these sections. | ||
| 2. |
Beshta O. S. Ulpa particle separa-tion model in a spiral classifier [Електронний ресурс] / O. S. Beshta, V. M. Kuvaiev, I. K. Mladetskyi, M. V. Kuvaiev // Науковий вісник Національного гірничого університету. - 2020. - № 1. - С. 31-35. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2020_1_7 | ||
| 3. |
Hlukhoveria M. Beneficiation properties of ash-and-slag dumps [Електронний ресурс] / M. Hlukhoveria, I. Mladetskyi, K. Levchenko, O. Berezniak // Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu. - 2022. - № 1. - С. 46-50. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2022_1_9 Purpose. Development of a mathematical model for the indices of TPP ash-and-slag waste separation in closed flotation circuit when applying recleaning operations of enriched product. Methodology. The methods for calculating separation indices using the separation characteristics of separation processes and calculating the indices of the release of valuable mineral using statistical relationships between the particle size of the inclusion, ash content and particle size distribution function were used. Findings. Separation characteristics of rough and recleaning flotation operations were preliminarily determined experimentally, relations that allow calculating the indices of the release of coal particles in ash-and-slag dumps were defined, based on which the functions of particle distribution by their content of valuable mineral - fractional composition - were found. The separation characteristics of the connections of the separation blocks, including several operations of cleaning of the enriched - froth product, were determined. Calculations to determine the quantitative and qualitative separation indices were performed. Originality. Analytical relationships to determine the indices of the release of coal inclusions in the process of material from ash-and-slag dumps grinding were obtained. Practical value. The established dependencies make it possible to justify the required grinding coarseness to achieve the specified parameters of the enrichment process based on the values of the beneficiation properties of ash-and-slag dumps. | ||
| 4. |
Hlukhoveria M. Improving the technology of extracting coal concentrate from fly ash from thermal power plants [Електронний ресурс] / M. Hlukhoveria, I. Mladetskyi, K. Levchenko, O. Borysovska // Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu. - 2023. - № 4. - С. 33-39. | ||
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