(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: 利用已開發(fā)的銅閃速吹煉過程多相平衡熱力學(xué)數(shù)學(xué)模型，計(jì)算某典型銅閃速吹煉生產(chǎn)工況，驗(yàn)證模型熱力學(xué)分析的可行性，進(jìn)而考察粗銅含硫(CSCu)、渣中鈣鐵比(RCaFe)、富氧濃度(CO，體積分?jǐn)?shù))、吹煉溫度(T)對(duì)雜質(zhì)元素在吹煉產(chǎn)物中分配行為的影響。結(jié)果表明：提高CSCu、T或降低RCaFe、CO將導(dǎo)致雜質(zhì)在粗銅中分配率升高、而入渣率降低、有害雜質(zhì)揮發(fā)率升高。在銅锍量和成分一定條件下，吹煉過程宜在“低粗銅含硫與吹煉溫度”和“高渣中鈣鐵比與富氧濃度”條件下進(jìn)行。綜合考慮粗銅質(zhì)量和渣含銅，CSCu、RCaFe和T建議分別控制在0.20%、0.4和1526 K左右，而CO應(yīng)根據(jù)制氧成本和爐內(nèi)反應(yīng)狀況適當(dāng)控制。
關(guān)鍵字: 銅閃速吹煉；雜質(zhì)元素；分配行為；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 & Chemical Engineering Jangxi University of Science and Technology, Ganzhou 341000, China）
Abstract:With the developed multi-phase equilibrium mathematical model of the copper flash converting process, the typical production condition of the converting process was calculated, and the feasibility of the thermodynamic analysis by this model was verified. Then the effects of the content of sulfide in blister copper(CSCu), the ratio of Ca/Fe in slag(RCaFe), the oxygen-rich concentration(CO) and the converting temperature(T) on the distribution behavior of impurity elements in the converting product were studied using this model. The results show that, increasing CSCu, T or decreasing RCaFe, CO will lead to be the results in higher distribution rate of impurities in blister copper, lower removal rate of impurities into the slag and higher volatile rate of harmful impurities. For the matte with a certain amount and a certain composition, appropriate conditions of melting process are “l(fā)ow CSCu , T ”and “high RCaFe, CO”. However, considering the quality of blister copper and slag containing copper, the CSCu, RCaFe and T should be controlled at about 0.20%, 0.4 and 1526 K, respectively, and the CO should be controlled properly based on oxygen generation cost and the reaction conditions in the furnace.
Key words: copper flash converting; impurity element; distribution behavior; multi-phase equilibrium; thermodynamics
