dc.contributor.author | Zhu, Mengyi | |
dc.contributor.author | Azarov, Alexander | |
dc.contributor.author | Monakhov, Eduard | |
dc.contributor.author | Tang, Kai | |
dc.contributor.author | Safarian, Jafar | |
dc.date.accessioned | 2020-10-29T13:02:05Z | |
dc.date.available | 2020-10-29T13:02:05Z | |
dc.date.created | 2020-09-22T21:37:59Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Separation and Purification Technology. 2020, 240 . | en_US |
dc.identifier.issn | 1383-5866 | |
dc.identifier.uri | https://hdl.handle.net/11250/2685730 | |
dc.description.abstract | In 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.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.subject | Impurities | en_US |
dc.subject | Phosphorus | en_US |
dc.subject | Acid leaching | en_US |
dc.subject | Purification | en_US |
dc.subject | Metallurgical grade silicon | en_US |
dc.title | Phosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leaching | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_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.pagenumber | 12 | en_US |
dc.source.volume | 240 | en_US |
dc.source.journal | Separation and Purification Technology | en_US |
dc.identifier.doi | 10.1016/j.seppur.2020.116614 | |
dc.identifier.cristin | 1832310 | |
dc.relation.project | Norges forskningsråd: 257639 | en_US |
dc.source.articlenumber | 116614 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |