Investigation of alumina production from pumice by acidic leaching

Basit Öğe Kaydı
dc.authorscopusid58065582800
dc.authorscopusid6602405850
dc.contributor.authorAydemir M.K.
dc.contributor.authorErdemoğlu M.
dc.date.accessioned2024-08-04T20:03:45Z
dc.date.available2024-08-04T20:03:45Z
dc.date.issued2022
dc.departmentİnönü Üniversitesien_US
dc.description.abstractDue to the decrease in bauxite reserves suitable for the Bayer process, production of alumina from non-bauxite sources is becoming increasingly important today. In this study, production of alumina from pumice, which has high reserves in Türkiye, by acid leaching was investigated. Pumice sample containing 64.64% SiO2 and 14.85% Al2O3 was leached with water, HCl, H2SO4 and HNO3 solutions and aluminum could not be recovered in any medium. To activate it mechanically, the pumice was intensively milled in a planetary ball mill at different times in the range of 2-60 minutes. Intensively milled pumice samples were leached in different acid solutions under identical conditions and 66.40% of aluminum was recovered using 60 min. milled pumice sample leached by HCl. For increasing the aluminum recovery, effects of time, acid concentration and temperature were investigated. Thus, the aluminum recovery increased to 91.37% by leaching in 4 M HCl solution, at boiling temperature and in 24 hours. AlCl3 salt was precipitated from this pregnant leaching solution by evaporation method, then the salt was roasted at 1200°C for 3 hours and a pumice alumina with 62.87% Al2O3 content was produced for the first time. Although there are iron, calcium, magnesium and titanium in the alümina as impurities, it was shown that by applying a sequential process including mechanical activation, acid leaching, precipitation and roasting, alumina can be produced from pumice. © 2022 Union of Chambers of Engineers and Architects of Turkey. All rights reserved.en_US
dc.identifier.doi10.30797/madencilik.1061751
dc.identifier.endpage200en_US
dc.identifier.issn2564-7024
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85146303321en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage193en_US
dc.identifier.trdizinid1155913en_US
dc.identifier.urihttps://doi.org/10.30797/madencilik.1061751
dc.identifier.urihttps://search.trdizin.gov.tr/yayin/detay/1155913
dc.identifier.urihttps://hdl.handle.net/11616/92050
dc.identifier.volume61en_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isotren_US
dc.publisherChamber of Mining Engineers of Turkeyen_US
dc.relation.ispartofScientific Mining Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAcid Leachingen_US
dc.subjectAlumina Productionen_US
dc.subjectMechanical Activationen_US
dc.subjectPumiceen_US
dc.titleInvestigation of alumina production from pumice by acidic leachingen_US
dc.title.alternativePomzadan asit liçiyle alümina üretiminin araştırılmasıen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

Scopus İndeksli Yayınlar Koleksiyonu
TR-Dizin İndeksli Yayınlar Koleksiyonu