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dc.contributor.authorMihajlović, Slavica
dc.contributor.authorSavić, Ljubinko
dc.contributor.authorRadosavljević, Dragana
dc.contributor.authorSavić, Ljiljana
dc.contributor.authorIgnjatović, Miroslav
dc.contributor.authorBlagojev, Marina
dc.date.accessioned2022-09-26T10:37:14Z
dc.date.available2022-09-26T10:37:14Z
dc.date.issued2019
dc.identifier.urihttps://platon.pr.ac.rs/handle/123456789/670
dc.description.abstractThe main problem of hydraulic transport is the resistance generated during the mixture transport through the pipe-line. Testing the flow characteristics of mixtures, shown in this paper, are based on the principles of determining the unit energy losses by a mathematical calculation using the non-linear regression – the Levenberg-Marquardt algorithm. Such obtained results allow determining a transport rate in the horizontal pipe-line, depending on the mixture bulk density and pipe-line diameter. The flotation tailings is mainly used as a filling material in the mine “Trepca” - Stari Trg. According to the grain size distribution, it is a fine-grained material of a size of 0.074 mm to 1.2 mm. It is a multicomponent material containing pyrite, pyrrhotine and other heavy metals, and therefore, has a high bulk mass. The average rate of the hydromixture, in which the energy losses reach the minimum value, depends on the pipe-line diameter and kinetic bulk density of the mixture. For the test interval of change in the pipe-line diameter, shown in this paper (0.168 mm, 0.176 mm, 0.193 mm, and 0.225 mm), and kinetic bulk density of the hydraulic mixture (1-1.6 kg/m3), this rate ranges from 3-5.5 m/s. The increase of the energy losses in the hydraulic mixture transport increases proportionality with the increase of its kinetic bulk density. The results, presented in this paper, show that the required bulk density of 1.6 kg/m3 should be accepted as a limit from a point of view of the hydraulic transport cost-efficiency.en_US
dc.language.isoen_USen_US
dc.publisherThermal Scienceen_US
dc.rightsАуторство-Некомерцијално-Без прерада 3.0 САД*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.titleThe Non-Linear Regression - the Levenberg- Marquardt Algorithm for Assumption the Energy Losses of Hydraulic Transport in a Case of the Mine Trepcaen_US
dc.title.alternativeThermal Scienceen_US
dc.typeclanak-u-casopisuen_US
dc.description.versionpublishedVersionen_US
dc.identifier.doi10.2298/TSCI180608252M
dc.citation.volume23
dc.subject.keywordshydro-fillingen_US
dc.subject.keywordsflotation tailingsen_US
dc.subject.keywordsenergy lossesen_US
dc.type.mCategoryM22en_US
dc.type.mCategoryopenAccessen_US
dc.type.mCategoryM22en_US
dc.type.mCategoryopenAccessen_US


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Ауторство-Некомерцијално-Без прерада 3.0 САД
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