(1. 中南大學(xué) 冶金與環(huán)境學(xué)院，長沙 410083；
2. 中南大學(xué) 中國有色金屬工業(yè)清潔冶金工程研究中心，長沙 410083)
摘 要: 通過分析氧氣底吹銅熔煉過程產(chǎn)生的鐵硅型工業(yè)銅渣中SiO2、Fe、S、Cu、CaO等組元含量變化趨勢，結(jié)合冶金過程原理，研究上述各組元造渣行為及組元含量相互間的映射關(guān)系，并進行渣型優(yōu)化。結(jié)果表明：SiO2、Fe、S、Cu及CaO等組元的造渣行為具有相互關(guān)聯(lián)性，且各組元與Cu造渣行為的關(guān)聯(lián)性由強到弱的順序依次為S、m(Fe)/m(SiO2)、SiO2、Fe。同時，SiO2和Fe含量對Cu含量的耦合作用較明顯，隨SiO2含量升高，F(xiàn)e含量降低，Cu含量呈降低趨勢。通過渣型優(yōu)化，渣中SiO2含量為26.5%~28%、Fe含量為38.5%~40%(質(zhì)量分數(shù))，該渣型的流動性較好，理論上底吹熔煉渣含Cu可降低到2.5%(質(zhì)量分數(shù))以下。
關(guān)鍵字: 銅冶煉；氧氣底吹；銅渣；組元行為；渣型優(yōu)化
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. Cleaner Metallurgical Engineering Research Center, Nonferrous Metal Industry of China,
Central South University, Changsha 410083, China）
Abstract:The multicomponent slagging behavior and mapping relationship of SiO2, Fe, S, Cu and CaO and slag constitution optimization were investigated by analyzing SiO2, Fe, S, CaO and Cu content variation trends of industrial iron silicate slag in copper oxygen bottom blowing bath smelting (BBS) process, combined with metallurgical process principles. The results show that the slagging behaviors of SiO2, Fe, S, Cu and CaO have certain correlation, and the correlation sequence with Cu slagging behavior is S, m(Fe)/m(SiO2), SiO2, Fe. The rule of coupling interaction between SiO2 and Fe to Cu is sensible. Cu content increases with the increase of SiO2 and the decrease of Fe. Through optimizing the slag, SiO2 and Fe contents in slag are 26.5%-28% and 38.5%-40% (mass fraction), respectively. The slag has good fluidity, Cu content of BBS slag is lower than 2.5% in theory.
Key words: copper smelting; oxygen bottom blowing; copper slag; component behavior; slag constitution optimization
