(1. 中南大學(xué) 冶金與環(huán)境學(xué)院，長沙 410083；
2. 長沙有色冶金設(shè)計研究院有限公司，長沙 410001；
3. 江西理工大學(xué) 材料冶金化學(xué)學(xué)部，贛州 341000)
摘 要: 基于多相平衡原理，采用化學(xué)平衡常數(shù)法，建立鉛富氧側(cè)吹氧化熔池熔煉過程多相平衡模型和仿真系統(tǒng)。在原料組成、氧料比、冷卻水量與進出水溫差、富氧濃度等典型生產(chǎn)工況條件下，模擬計算平衡產(chǎn)物組成和關(guān)鍵技術(shù)指標。計算結(jié)果表明：與生產(chǎn)實測值相比，除富鉛渣中微量元素外，一次粗鉛、富鉛渣和煙塵中Pb、Zn、S、Cu、As、Sb、Bi、Cd、Au、Ag質(zhì)量分數(shù)計算值的相對誤差均低于10%；渣中鐵硅比(RCaO/SiO2)和鈣硅比(RCaO/SiO2)、煙塵率、一次鉛收率、富鉛渣溫度等關(guān)鍵技術(shù)指標的誤差均小于8%。因此，所構(gòu)建模型和計算系統(tǒng)能較好地反映鉛富氧側(cè)吹氧化熔池熔煉過程實際生產(chǎn)情況，具有精準預(yù)測該熔煉過程和優(yōu)化工藝參數(shù)的潛力，可有效指導(dǎo)鉛富氧側(cè)吹氧化熔池熔煉的生產(chǎn)實踐。
關(guān)鍵字: 富氧側(cè)吹；鉛熔池熔煉；多相平衡；化學(xué)平衡常數(shù)法
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. Changsha Design and Research Institute of Nonferrous Metallurgy, Changsha 410001, China;
3. Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China）
Abstract:Based on the principle of multiphase equilibrium, a multiphase equilibrium model and simulation system for lead oxygen-enriched side-blown oxidation bath smelting process were established by using chemical equilibrium constant method. Under typical production conditions, such as raw material composition, oxygen-material ratio, volume of cooling water and temperature of inlet and outlet water, oxygen-enriched concentration, the composition of equilibrium products and key technical indicators were simulated and calculated. The results show that the relative errors of the calculated mass fractions of Pb, Zn, S, Cu, As, Sb, Bi, Cd, Au and Ag in primary lead-rich slag and smoke dust are all less than 10% compared with the measured values in production, and the errors of the key technical indexes, such as RCaO/SiO2, RCaO/SiO2, smoke and dust rate, primary lead recovery rate and temperature of lead-rich slag in slag are less than 8%. Therefore, the model and calculation system can better reflect the actual production situation of lead oxygen-enriched side-blown oxidation bath smelting process, have the potential to accurately predict the smelting process and optimize process parameters, and can effectively guide the production practice of lead oxygen-enriched side-blown oxidation bath smelting.
Key words: oxygen-enriched side-blown; lead bath smelting; multi-phase equilibrium；chemical equilibrium constant method
