CaO-SiO2-Al2O3 슬래그에서의 Ca 및 Al의 용해도에 관한 열역학적 연구

Thermodynamic study on CaO-SiO2-Al2O3 slag system was carried out to understand the refining ability of Ca and Al in ferrosilicon. The effect of slag composition and oxygen partial pressure on refining ability of slag was also thermodynamically evaluated. Experimental results indicated that equilibr...

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Published in대한금속·재료학회지, 53(5) Vol. 53; no. 5; pp. 352 - 358
Main Authors 정은진, Eun Jin Jung, 이상훈, Sang Hoon Lee, 김완호, Wan Ho Kim, 민동준, Dong Jun Min
Format Journal Article
LanguageKorean
Published 대한금속재료학회 31.05.2015
대한금속·재료학회
Subjects
ferrosilicon
metals
purification
thermodynamics properties
재료공학
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ISSN1738-8228
2288-8241
DOI10.3365/KJMM.2015.53.5.352

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Summary:Thermodynamic study on CaO-SiO2-Al2O3 slag system was carried out to understand the refining ability of Ca and Al in ferrosilicon. The effect of slag composition and oxygen partial pressure on refining ability of slag was also thermodynamically evaluated. Experimental results indicated that equilibrium concentrations of Ca and Al are both decreased with increasing SiO2 activity of slag and oxygen partial pressure. Also, the effect of activity coefficients of Ca and Al in molten alloy was not significant, while activities of each component in slag were important determining factors. Refining ability of Ca and Al of CaO-SiO2-Al2O3 slag from ferrosilicon is possibly increased by controlling interfacial oxygen partial pressure and activities of components of slags.
Bibliography:The Korean Institute of Metals and Materials
G704-000085.2015.53.5.008
http://210.101.116.102/journal_korea/detail_01.asp?a_key=3318132
ISSN:1738-8228
2288-8241
DOI:10.3365/KJMM.2015.53.5.352