铜闪速熔炼多相平衡数模的建立与应用

Establishment and Application of Multiphase Equilibrium Mathematical Model for Copper Flash Smelting Process

基于吉布斯最小自由能原理,建立了铜闪速熔炼过程的多相平衡数学模型。实例验证表明,该数模能较好的反映铜闪速熔炼过程,与生产实际数据相比,铜锍中Cu、Fe、S含量(%)绝对误差分别为1.49、1.52、0.71,相对误差为2.6%、9.7%、3.3%;炉渣中Fe、SiO2、Cu含量(%)绝对误差分别为1.19、0.06、0.5,相对误差为3.1%、0.2%、14.45%。同时,利用该模型研究了铁硅比、富氧浓度、吨矿氧量对铜闪速熔炼过程的影响,仿真结果与理论分析结果趋势一致。

Multiphase equilibrium mathematical model for the copper flash smelting process is established based on the Gibbs principle of minimum free energy. Verified example shows that the mathematical model can reflect the copper flash smelting process better, comparing with the actual data collected from the production, the absolute errors of Cu, FE, S concentration （%） in copper matte are 1.19, 0.06 and 0.5 respectively and the relative errors of them are 3.1%, 0.2% and 14.45% respectively. At the same time, the impacts of the ratio of Fe to St, the concentration of oxygen enrichment and the oxygen per ton ore on copper flash smelting process are studied by utilizing the mathematical model, the trend of simulation result is consistent with that of theoretical analysis result.