Publication:
Oxidative dissolution of nickel matte in dilute sulfuric acid solutions

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dc.contributor.authorAKTAŞ, SERDAR
dc.contributor.authorsMorcali, Mehmet Hakan; Khajavia, Leili Tafaghodi; Aktas, Serdar; Dreisinger, David Bruce
dc.date.accessioned2022-03-12T22:38:42Z
dc.date.available2022-03-12T22:38:42Z
dc.date.issued2019
dc.description.abstractNickel matte (Ni3S2) is the most common feedstock for producing nickel oxide and nickel metal in associated refineries. Nickel matte is produced from sulfide or laterite ores, and contains around 73 wt% nickel. This study investigated the dissolution parameters of nickel matte in dilute sulfuric acid media in the presence of air as oxidant with the goal of presenting a cost-effective process for leaching nickel matte. The dissolution experiments were carried out to examine the following effects: air flow rate, stirring speed, S/L ratio, acid concentration, reaction temperature, reaction time and the amount of ferrous sulfate added. Nickel extraction of 90% and cobalt extraction of 80% were achieved using dilute H2SO4 and sparging of air as a source of oxygen. To increase the dissolution percentage of the matte, ferrous sulfate addition was studied and the oxidation and reduction potential (ORP) was measured to investigate the effect of ferrous ions on nickel and cobalt recovery. The highest nickel dissolution percentage (95%) was observed with the initial addition of 1200 mg/L Fe (II). Characterization of samples has been carried out with quantitative X-ray diffraction (XRD) and scanning electron microscopy, along with an energy dispersive system (SEM-EDS).
dc.identifier.doi10.1016/j.hydromet.2019.03.010
dc.identifier.eissn1879-1158
dc.identifier.issn0304-386X
dc.identifier.urihttps://hdl.handle.net/11424/235708
dc.identifier.wosWOS:000466255000032
dc.language.isoeng
dc.publisherELSEVIER
dc.relation.ispartofHYDROMETALLURGY
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectNickel matte
dc.subjectDissolution
dc.subjectLeaching
dc.subjectPrecipitation
dc.subjectSalting out
dc.subjectOXYGEN
dc.subjectSOLUBILITY
dc.subjectKINETICS
dc.subjectNI3S2
dc.subjectCHEMISTRY
dc.subjectBEHAVIOR
dc.subjectCOPPER
dc.subjectCOBALT
dc.subjectORES
dc.titleOxidative dissolution of nickel matte in dilute sulfuric acid solutions
dc.typearticle
dspace.entity.typePublication
local.avesis.id842d1468-5af8-4cae-9085-a290142947e3
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages9
local.journal.quartileQ1
oaire.citation.endPage265
oaire.citation.startPage257
oaire.citation.titleHYDROMETALLURGY
oaire.citation.volume185
relation.isAuthorOfPublication46159ed0-7c30-4490-a7db-8149b83bce7c
relation.isAuthorOfPublication.latestForDiscovery46159ed0-7c30-4490-a7db-8149b83bce7c

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