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dc.contributor.authorZhu, Mengyi
dc.contributor.authorAzarov, Alexander
dc.contributor.authorMonakhov, Eduard
dc.contributor.authorTang, Kai
dc.contributor.authorSafarian, Jafar
dc.date.accessioned2020-10-29T13:02:05Z
dc.date.available2020-10-29T13:02:05Z
dc.date.created2020-09-22T21:37:59Z
dc.date.issued2020
dc.identifier.citationSeparation and Purification Technology. 2020, 240 .en_US
dc.identifier.issn1383-5866
dc.identifier.urihttps://hdl.handle.net/11250/2685730
dc.description.abstractIn this paper, the separation of phosphorus from metallurgical-grade silicon was investigated based on an Mg alloying and HCl leaching approach. Experimental results show that P concentration was reduced from initial 15.1 ppmw to 0.2 ppmw with also large extent removal of metallic impurities by two times Mg alloying-leaching purification. The mechanism of enhanced P separation is clarified owing to the strong affinity between Mg and P, which is validated by SIMS elemental mapping. A two-parameter analytical model was developed to predict the P removal degree based on the variables of alloying metal concentration and interaction coefficient between alloying metal and P. The model is validated with experimental results and the interaction coefficient ε^P_{Mg In Si} was obtained as −10.8. This approach can be applied to model the removal of impurity which follows Gulliver-Scheil solidification from other binary alloying systems. Furthermore, in order to study the effect of applied alloying-leaching operation times, a model was proposed which establishes the mathematical relationships among key processing variables like initial and target P concentrations, the amount of the alloying metal, and the process operation times.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectImpuritiesen_US
dc.subjectPhosphorusen_US
dc.subjectAcid leachingen_US
dc.subjectPurificationen_US
dc.subjectMetallurgical grade siliconen_US
dc.titlePhosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leachingen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY License (http://creativecommons.org/licenses/BY/4.0/).en_US
dc.source.pagenumber12en_US
dc.source.volume240en_US
dc.source.journalSeparation and Purification Technologyen_US
dc.identifier.doi10.1016/j.seppur.2020.116614
dc.identifier.cristin1832310
dc.relation.projectNorges forskningsråd: 257639en_US
dc.source.articlenumber116614en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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