Estimating specific energy from the brittleness indexes in cutting metallic ores

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dc.authorid0000-0001-7903-143X
dc.authorid0000-0003-0626-1087
dc.authorid0000-0001-7392-6275
dc.authorid0000-0001-7392-6275
dc.contributor.authorÇomaklı, Ramazan
dc.contributor.authorKahraman, Sair
dc.contributor.authorBalcı, Cemal
dc.contributor.authorTumaç, Deniz
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2016
dc.departmentNiğde ÖHÜ, Mühendislik Fakültesi, Maden Mühendisliği Bölümü
dc.description.abstractSpecific energy (SE) is a very useful parameter for assessing rock excavation by machine. Predicting the SE from the brittleness will be practical, especially for preliminary studies, due to the fact that determining the SE from cutting tests is difficult and expensive. In this study, the predictability of the SE from different brittleness concepts was investigated for metallic ores such as chromite, haematite, galena, and smithsonite. Uniaxial compressive strength, Brazilian tensile strength, impact strength, and small-scale cutting tests were carried out in the laboratory. The SE values were calculated from the cutting tests and correlated with three different brittleness concepts. A significant correlation could not be found between the SE and the brittleness B-3 (the ratio of compressive strength minus tensile strength to compressive strength plus tensile strength). However, strong correlations were found between the SE and the both brittleness B-5 (the product of percentage fines in the impact strength test and compressive strength) and brittleness B-8 (half of the product of compressive strength and tensile strength). The validations of the derived equations were also checked. It is concluded that the SE in ore cutting can be reliably estimated from the brittleness concepts B-5 and B-8.
dc.description.sponsorshipScientific Research Project Unit of Nigde University [FEB 2009/04]; Alexander von Humboldt Foundation
dc.description.sponsorshipThis study was supported by the Scientific Research Project Unit of Nigde University under the project number FEB 2009/04. The automatic cutting machine used for sample preparation was financed by the Alexander von Humboldt Foundation. The authors thank Professor Nuh Bilgin and his colleagues from Istanbul Technical University for their support in performing the linear cutting tests.
dc.identifier.citationComakli, R., Kahraman, S., Balci, C., & Tumac, D. (2016). Estimating specific energy from the brittleness indexes in cutting metallic ores. Journal of the South African Institute of Mining & Metallurgy / SAIMM, (8), 763.
dc.identifier.doi10.17159/2411-9717/2016/v116n8a8
dc.identifier.endpage766
dc.identifier.issn2225-6253
dc.identifier.issn2411-9717
dc.identifier.issue8
dc.identifier.scopus2-s2.0-84989885866
dc.identifier.scopusqualityQ3
dc.identifier.startpage761
dc.identifier.urihttps://dx.doi.org/10.17159/2411-9717/2016/v116n8a8
dc.identifier.urihttps://hdl.handle.net/11480/3594
dc.identifier.volume116
dc.identifier.wosWOS:000389742300011
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherSouth African Institute of Mining and Metallurgy
dc.relation.ispartofJournal of the Southern African Institute of Mining and Metallurgy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectSpecific Energy
dc.subjectOre Cutting
dc.subjectBrittleness Indexes
dc.subjectRegression Analysis
dc.titleEstimating specific energy from the brittleness indexes in cutting metallic ores
dc.typeArticle

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