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dc.creatorMihajlović, Slavica
dc.creatorSavić, Ljubinko
dc.creatorRadosavljević, Dragana B.
dc.creatorSavić, Ljiljana B.
dc.creatorIgnjatović, Miroslav R.
dc.creatorBlagojev, Marina S.
dc.date.accessioned2023-04-21T11:40:34Z
dc.date.available2023-04-21T11:40:34Z
dc.date.issued2019
dc.identifier.issn0354-9836
dc.identifier.urihttps://ritnms.itnms.ac.rs/handle/123456789/500
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/m(3)), 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/m(3) should be accepted as a limit from a point of view of the hydraulic transport cost-efficiency.en
dc.publisherUniverzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34013/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/33045/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34006/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceThermal Science
dc.subjecttransporten
dc.subjectresistanceen
dc.subjectpipe-lineen
dc.subjecthydro-fillingen
dc.subjectflotation tailingsen
dc.subjectenergy lossesen
dc.titlethe non-linear regression - the levenberg-marquardt algorithm for assumption the energy losses of hydraulic transport in a case of the mine "trepca"en
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage2938
dc.citation.issue5
dc.citation.other23(5): 2929-2938
dc.citation.rankM22
dc.citation.spage2929
dc.citation.volume23
dc.identifier.doi10.2298/TSCI180608252M
dc.identifier.rcubconv_866
dc.identifier.scopus2-s2.0-85057102721
dc.identifier.wos000498801200005
dc.type.versionpublishedVersion


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