Calcium deoxidation and nitrogen distribution in liquid nickel equilibrated with CaO-Al2O3 slags |
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| Authors: | Sung-Wook Cho Hideaki Suito |
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| Affiliation: | (1) Department of Metallurgical Engineering, Tohoku University, 980 Sendai, Japan;(2) Institute for Advanced Materials Processing, Tohoku University, 980 Sendai, Japan |
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| Abstract: | The Wagner’s first-ordere o Ca and second-order (r o Ca ) interaction parameters between Ca and O in liquid nickel were determined as −1220 and 1.35 x 105, respectively, at 1873 K in the equilibrium experiments between liquid nickel and CaO-Al2O3 slags in an A12O3 or CaO crucible. The values fore Ca O , (−3060), r Ca o (8.47 × 105), r Ca O,Ca (6.76 x 105), and r Ca O,Ca (6.76 x 105) were also estimated. Nitride capacities, C(N), defined by (mass pct N)·P 2 3/4 PskN21/2 were obtained by using the present results for nitrogen distribution ratio, LN =(mass pct N)/[mass pct N], and the reported values for the activity of Al2O3. |
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