(1. 中南大學(xué) 冶金與環(huán)境學(xué)院，長(zhǎng)沙 410083；
2. 中南大學(xué) 能源科學(xué)與工程學(xué)院，長(zhǎng)沙 410083；
3. 江西理工大學(xué) 冶金與化學(xué)工程學(xué)院，贛州 341000)
摘 要: 基于最小自由能原理，建立銅閃速吹煉過(guò)程多相平衡數(shù)學(xué)模型，考察粗銅含硫(CSCu)、渣中鈣鐵比(RCaFe)、富氧濃度(COxy)和溫度(T)對(duì)平衡產(chǎn)物各相主元素與組分含量的影響。結(jié)果表明：對(duì)一定投入量和一定成分的銅锍，提高CSCu可增加粗銅產(chǎn)能，但Cu品位降低，可減少渣量，渣含F(xiàn)e3O4降低，渣流動(dòng)性變好；隨著RCaFe增加，粗銅量減小，渣量和熔劑量增加，渣含F(xiàn)eO和Fe3O4降低，渣含Cu升高；COxy增加，除對(duì)粗銅含氧、富氧和煙氣量產(chǎn)生一定影響外，對(duì)其他組分含量影響不大；T增加，會(huì)影響粗銅含氧、粗銅和爐渣量，還可降低渣含銅。
關(guān)鍵字: 銅閃速吹煉；最小吉布斯自由能；多相平衡；熱力學(xué)
（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
