Medvedieva O.O., Mormul T.M., Yakubenko L.V., Medyanyk V.Yu. The control of the parameters of man-made placer by the impact on the fractionation process

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Parent Category: Geo-Technical Mechanics, 2022

Category: Geo-Technical Mechanics, 2022, Issue 160

Geoteh. meh. 2022, 160, 59-70

https://doi.org/10.15407/geotm2022.160.059

 

THE CONTROL OF THE PARAMETERS OF MAN-MADE PLACER BY THE IMPACT ON THE FRACTIONATION PROCESS

¹Medvedieva O.O., ¹Mormul T.M., ¹Yakubenko L.V., ²Medyanyk V.Yu.

¹Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, ²National Technical University “Dnipro Polytechnic” (NTU "DP")

UDC 622.17

Language: English

Abstract. According to the research results, the work experience of the mining and beneficiation plants of Kryvbas was analyzed, which made it possible to determine that the existing beneficiation technologies are not able to completely separate valuable components during the processing of mineral raw materials. This leads to the accumulation of a valuable component in beneficiation waste repositories and requires the development of methods and technologies aimed at the extraction and processing of mineral raw materials in man-made placers. The authors proposed a solution to this problem by developing a mineral enrichment waste storage facility as a man-made deposit for extracting the remains of a valuable component, or using the storage facility as an empty rock dump to cover the produced space and free up capacity for new waste storage.
The purpose of the work is to determine the parameters of the man-made placer and alluvial massif in the process of controlling the parameters of the man-made placer, which is carried out by changing the parameters of the fractionation process during the flow along the dusting surface of the alluvium.
The parameters of man-made spill formed in the beneficiation waste repository include: the content of the valuable component; impoverishment and clogging of the placer, which is defined as the content of clay and dust particles; placement capacity; length of placer along the length of the dusting surface; extent of spreading along the alluvial front; near limit of man-made placer; far limit of man-made placer.
Based on the results of the research, it was established that when controlling the parameters of the fractionation process of enrichment waste in the form of a low-concentration pulp, the maximum volume of man-made spill can be accumulated due to the combined flow over the obstacle of the gap with the obstacle, and the minimum volume - when the flow through the threshold. In these conditions, the use of flow over the crack allows to accumulate an intermediate volume of man-made placer. An assessment of the parameters of the obtained placer and the alluvial massif was carried out, the scientific foundations of methods of managing the parameters of man-made deposits were developed and improved, which for the first time ensure the intensification of the process of the formation of man-made placers and their further extraction without stopping the waste storage process.
Keywords: waste storage facilities, man-made placer, parameters, fractionation process, dusting surface, washout front.

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About authors:

Medvedieva Olha Oleksiivna, Doctor of Technical Sciences (D.Sc.), Senior Researcher, Senior Researcher in Department  of Ecology of Development of Natural Resources, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it.

Mormul Тaras Mykolaiovych, Candidate of Technical Sciences (Ph.D.), Senior Researcher in the Department of ecology of development of natural resources, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it.

Yakubenko Leonid Viktorovych, Candidate of Technical Sciences (Ph.D.), Senior Researcher in Department  of Ecology of Development of Natural Resources, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it.

Medyanyk Volodymyr Yuriiovych, Candidate of Technical Sciences (Ph.D.), Associate Professor, Associate Professor at the Department of Mining Engineering and Education, National Technical University “Dnipro Polytechnic” (NTU "DP"), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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