氧气底吹铜熔炼过程多相平衡模拟（英文）

Multiphase equilibrium modeling of oxygen bottom-blown copper smelting process

基于氧气底吹工艺特性和最小吉布斯自由能原理,构建了氧气底吹铜熔炼热力学计算模型。模拟结果表明:在给定的稳定生产条件下,铜锍中Cu、Fe和S含量分别是71.08%、7.15%和17.51%,渣中Fe、SiO_2和Cu含量分别是42.17%、25.05%和3.16%。微量元素在底吹熔炼过程中气相、渣相和铜锍相三相间的模拟分配比例为:砷82.69%、11.22%和6.09%;锑16.57%、70.63%和12.80%;铋68.93%、11.30%和19.77%;铅19.70%、24.75%和55.55%;锌17.94%、64.28%和17.79%。将模拟结果和实际生产数据进行验证,结果一致,表明了该多相平衡热力学计算模型具有可靠性,可以指导氧气底吹铜熔炼生产实践,优化工艺操作参数。

A computational thermodynamics model for the oxygen bottom-blown copper smelting process(Shuikoushan,SKS process)was established,based on the SKS smelting characteristics and theory of Gibbs free energy minimization.The calculated results of the model show that,under the given stable production condition,the contents of Cu,Fe and S in matte are71.08%,7.15%and17.51%,and the contents of Fe,SiO2and Cu in slag are42.17%,25.05%and3.16%.The calculated fractional distributions of minor elements among gas,slag and matte phases are As82.69%,11.22%,6.09%,Sb16.57%,70.63%,12.80%,Bi68.93%,11.30%,19.77%,Pb19.70%,24.75%,55.55%and Zn17.94%,64.28%,17.79%,respectively.The calculated results of the multiphase equilibrium model agree well with the actual industrial production data,indicating that the credibility of the model is validated.Therefore,the model could be used to monitor and optimize the industrial operations of SKS process.