Solubility and Activity of Calcium in Molten Iron in Equilibrium with Lime and Thermodynamics of Calcium Containing Iron Melts
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概要
- 論文の詳細を見る
Determination of solubility and activity of calcium in liquid Fe+Ca+O alloys in equilibrium with lime at 1823 K were carried out by means of the distribution equilibrium of calcium <I>via</I> gas phase in a closed tantalum vessel between iron melts and Ag+Ca Alloys.Solubility of calcium in equilibrium with lime increases with increase of calcium potential of the system. Within the concentration range from 3 to 270 mass ppm Ca, the activity coefficient of calcium referred to the hypothetical pure liquid calcium does not change apparently and its value is 7.8±0.7. Solubility of calcium in iron under the condition of both CaO and Ca+O alloy saturation was found to be 270±15 mass ppm. The partial pressure of calcium at this three phases equilibria is 1.2×10<SUP>5</SUP> Pa.Based on the results and the literature data, ditermination procedure of interaction parameter between calcium and oxygen in molten iron was discussed.
- 社団法人 日本鉄鋼協会の論文
- 1995-09-15
著者
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Fujiwara Hiroyasu
Department Of Energy Science And Engineering Kyoto University
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Ichise Eiji
Department Of Energy Science And Engineering Kyoto University
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Ichise Eiji
Department Of Energy Science And Engineering Faculty Of Engineering Kyoto University
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TANO Manabu
Kyoto University
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YAMAMOTO Kenichi
Kyoto University
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