(1. 東北大學(xué) 冶金學(xué)院，沈陽 110819;
2. 東北大學(xué) 多金屬礦生態(tài)冶金重點實驗室，沈陽 110819)
摘 要: 通過FactSage 7.2軟件對銅冶煉煙道的氣相體系進(jìn)行熱力學(xué)平衡研究，考察了溫度、氣相主要組分等因素對平衡煙氣中SO3含量的影響。此外，在固相催化實驗平臺，針對銅冶煉煙灰對SO2催化氧化的影響進(jìn)行了實驗研究。結(jié)果表明：溫度和煙氣中O2初始含量對SO3的平衡濃度影響較大，煙氣中SO2初始含量對SO3平衡濃度影響相對較小；銅冶煉煙道飛灰促進(jìn)了煙氣中SO2向SO3的轉(zhuǎn)化。
關(guān)鍵字: 銅冶金；熱力學(xué)；三氧化硫；飛灰；催化氧化
（1. School of Metallurgy, Northeastern University, Shenyang 110819, China;
2. Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang 110819, China）
Abstract:The thermodynamic equilibrium of gas phase system in copper smelting flue gas was studied by FactSage 7.2 software. The effects of temperature and major gas phase composition on SO3 content in equilibrium flue gas were investigated. In addition, the effect of copper smelting ash on SO2 catalytic oxidation was studied on the solid-phase catalytic experimental platform. The results show that temperature and initial content of O2 in flue gas have great influence on the equilibrium concentration of SO3, while initial content of SO2 in flue gas has little effect on the equilibrium concentration of SO3. The fly ash in copper smelting flue promotes the transformation of SO2 to SO3.
Key words: copper metallurgy; thermodynamics; sulfur trioxide; fly ash; catalytic oxidation
