Thermodynamic assessment of ZnO-SiO2 system

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorISOMÄKI, Iikka
dc.contributor.authorZHANG, Rui
dc.contributor.authorXIA, Long gong
dc.contributor.authorHELLSTEN, Niko
dc.contributor.authorTASKINEN, Pekka A.
dc.contributor.departmentKTH Royal Institute of Technology
dc.contributor.departmentCentral South University
dc.contributor.departmentMetallurgy (MTG)
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineering
dc.date.accessioned2019-05-06T09:14:43Z
dc.date.available2019-05-06T09:14:43Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2020-10-09
dc.date.issued2018-09-01
dc.description.abstractZnO-containing slags are common in pyrometallurgical processing of the base metals and steel. This caused the interest to the thermodynamics of the ZnO-SiO2 system. A complete literature survey, critical evaluation of the available experimental data and a thermodynamic optimization of the phase equilibria and thermodynamic properties of the system ZnO-SiO2 at 1.013×105 Pa are presented. The molten oxide was described as an associate solution. The properties of liquid were reassessed and enthalpy term of the Gibbs energy of solid Zn2SiO4 was re-fitted to be compatible with the new data in the willemite primary phase field. The thermodynamic data set agrees well with the recent experimental observations. It can be used for predicting, e.g., the thermodynamic properties and the domains of the phase diagram, like critical point of the liquid miscibility gap, with a better accuracy than using the previous assessments. A set of optimized model parameters were obtained, reproducing the reliable thermodynamic and phase equilibrium data within their experimental errors from 298 K to liquidus temperatures, over the entire composition range. The created database can be used in a Gibbs energy minimization software to calculate the thermodynamic properties and the phase diagram sections of interest.en
dc.description.versionPeer revieweden
dc.format.extent9
dc.format.extent1869-1877
dc.format.mimetypeapplication/pdf
dc.identifier.citationISOMÄKI , I , ZHANG , R , XIA , L G , HELLSTEN , N & TASKINEN , P A 2018 , ' Thermodynamic assessment of ZnO-SiO 2 system ' , Transactions of Nonferrous Metals Society of China (English Edition) , vol. 28 , no. 9 , pp. 1869-1877 . https://doi.org/10.1016/S1003-6326(18)64832-0en
dc.identifier.doi10.1016/S1003-6326(18)64832-0
dc.identifier.issn1003-6326
dc.identifier.otherPURE UUID: 784483f2-0736-4634-aecd-4340d4754b80
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/784483f2-0736-4634-aecd-4340d4754b80
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85054441332&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/32861213/CHEM_Isom_ki_et_al_ZnO_SiO2_assessment_2019_Transactions_of_Nonferrous_Metals.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/37700
dc.identifier.urnURN:NBN:fi:aalto-201905062820
dc.language.isoenen
dc.publisherNonferrous Metals Society of China
dc.relation.ispartofseriesTransactions of Nonferrous Metals Society of China (English Edition)en
dc.relation.ispartofseriesVolume 28, issue 9en
dc.rightsopenAccessen
dc.subject.keywordphase diagram
dc.subject.keywordthermodynamic assessment
dc.subject.keywordthermodynamic properties
dc.subject.keywordZnO-SiO system
dc.titleThermodynamic assessment of ZnO-SiO2 systemen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi

Files