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该试验在1200及1250℃控制氧势条件下进行,研究并发展了关于铋在铜熔炼,吹炼及精炼过程中的性质的热力学数据,结果表明: 1.铋在熔融铜中的拉乌耳活度系数在1200℃时为2.17±0.32;1250℃时为2.27±0.34。 2.在1200和1250℃之间,气相铋与溶于铜中铋平衡时的标准自由能: Bi(气)=Bi[在铜中的(重量)%]
The experiment was carried out under the control of oxygen potential at 1200 and 1250 ℃. The thermodynamic data on the properties of bismuth in copper smelting, blowing and refining processes were studied and developed. The results show that: 1. bismuth in molten copper The activity coefficient was 2.17 ± 0.32 at 1200 ° C and 2.27 ± 0.34 at 1250 ° C. 2. Standard free energy at equilibrium between gaseous bismuth and bismuth dissolved in copper at 1200 and 1250 ° C: Bi (gas) = Bi [% by weight in copper]