The thermodynamics of boron extraction from liquid silicon using SiO2-CaO-MgO stag treatment
2013 (English)In: International Journal of Materials Research - Zeitschrift für Metallkunde, ISSN 1862-5282, Vol. 104, no 3, 229-234 p.Article in journal (Refereed) Published
In the refining of solar-grade silicon using slag treatment, boron dissolved in the silicon is oxidized and rejected to a liquid oxide (slag) phase. In this study the partitioning of boron between liquid silicon and SiO2-CaO-MgO slags was examined at 1 873 K over a range of slag compositions and oxygen partial pressures. It was found that the distribution of boron is indeed dependent on both the slag composition and the oxygen partial pressure. The concentration of MgO seems to have little impact on the partition ratio.
Place, publisher, year, edition, pages
2013. Vol. 104, no 3, 229-234 p.
Silicon, Boron, Slag, Partition ratio, Oxygen potential
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-121483DOI: 10.3139/146.110867ISI: 000316519200001ScopusID: 2-s2.0-84875870269OAI: oai:DiVA.org:kth-121483DiVA: diva2:619890
QC 201305072013-05-072013-04-292013-11-11Bibliographically approved