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Factors affecting nickel upgrade during selective grinding of low-grade limonitic laterites

Petrakis Evaggelos, Karmali Vasiliki, Komnitsas Konstantinos

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URIhttp://purl.tuc.gr/dl/dias/264D7F99-062B-4E57-B254-753B68228C94-
Identifierhttps://www.tandfonline.com/doi/full/10.1080/25726641.2018.1521578-
Identifierhttps://doi.org/10.1080/25726641.2018.1521578-
Languageen-
Extent11 pagesel
TitleFactors affecting nickel upgrade during selective grinding of low-grade limonitic lateritesen
CreatorPetrakis Evaggelosen
CreatorΠετρακης Ευαγγελοςel
CreatorKarmali Vasilikien
CreatorΚαρμαλη Βασιλικηel
CreatorKomnitsas Konstantinosen
CreatorΚομνιτσας Κωνσταντινοςel
PublisherTaylor and Francisen
Content SummaryIn this study wet grinding batch experiments were performed in a laboratory ball mill using laterites from Evia island, Greece, in order to determine the optimal grinding conditions for potential nickel upgrade. Selective grinding which exploits the different grindability between soft and hard minerals was considered. Kinetic models were determined based on population balance considerations for different feed and ball sizes. The efficiency of selective grinding was evaluated by taking into account breakage kinetics as well as the grade and recovery of nickel in the products. The results showed that, in general, nickel tends to concentrate in the finer fraction of −0.075 mm. In this fraction nickel recovery is increased significantly with increasing grinding times, while only a slight decrease in its grade is noticed. The results of breakage rate analysis indicate that nickel bearing phases are ground with a higher rate when shorter grinding times are used.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2020-12-29-
Date of Publication2018-
SubjectComminutionen
SubjectLateritesen
SubjectSelective grindingen
SubjectNickel upgradeen
Bibliographic CitationE. Petrakis, V. Karmali and K. Komnitsas, "Factors affecting nickel upgrade during selective grinding of low-grade limonitic laterites," Min. Proc. Ext. Met., pp. 1-10, 2018. doi: 10.1080/25726641.2018.1521578en

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