(1. 中南大学 冶金与环境学院，长沙 410083；
2. 中南大学 能源科学与工程学院，长沙 410083；
3. 江西理工大学 冶金与化学工程学院，赣州 341000)
摘 要: 基于最小自由能原理，建立铜闪速吹炼过程多相平衡数学模型，考察粗铜含硫(CSCu)、渣中钙铁比(RCaFe)、富氧浓度(COxy)和温度(T)对平衡产物各相主元素与组分含量的影响。结果表明：对一定投入量和一定成分的铜锍，提高CSCu可增加粗铜产能，但Cu品位降低，可减少渣量，渣含Fe3O4降低，渣流动性变好；随着RCaFe增加，粗铜量减小，渣量和熔剂量增加，渣含FeO和Fe3O4降低，渣含Cu升高；COxy增加，除对粗铜含氧、富氧和烟气量产生一定影响外，对其他组分含量影响不大；T增加，会影响粗铜含氧、粗铜和炉渣量，还可降低渣含铜。
关键字: 铜闪速吹炼；最小吉布斯自由能；多相平衡；热力学
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
3. School of Metallurgy and Chemical Engineering, Jangxi University of Science and Technology, Ganzhou 341000，China）
Abstract:Based on the principle of Gibbs free energy minimization, the multi-phase equilibrium mathematical model of the copper flash converting process was built. Then, the effects of the content of sulfide in blister copper(CSCu), the ratio of Ca and Fe in slag(RCaFe), the oxygen-rich concentration(COxy) and the converting temperature(T) on the contents of main elements and compositions of products were studied. The results show that, for the matte with a certain amount and a certain composition, the productivity of blister copper can increase with the rise of CSCu, however, the grade of blister copper and the content of Fe3O4 in slag are lead to reduce, and the mobility of slag shows better. With the rise of RCaFe, the amount of blister copper reduces and the amount of slag and flux increase, meanwhile, the contents of FeO and Fe3O4 in slag decrease, and the copper in slag become larger. Increasing COxy can definite influence on the content of oxygen in blister copper and the amount of slag and flux, but less on the other compositions. With the rise of T, the content of oxygen in blister copper, the amount of blister copper and slag can be certainly affected, meanwhile, the content of copper in slag increases.
Key words: copper flash converting; Gibbs free energy minimization; multi-phase equilibrium; thermodynamics
