(1. 东北大学 冶金学院，沈阳 110819;
2. 东北大学 多金属矿生态冶金重点实验室，沈阳 110819)
摘 要: 通过FactSage 7.2软件对铜冶炼烟道的气相体系进行热力学平衡研究，考察了温度、气相主要组分等因素对平衡烟气中SO3含量的影响。此外，在固相催化实验平台，针对铜冶炼烟灰对SO2催化氧化的影响进行了实验研究。结果表明：温度和烟气中O2初始含量对SO3的平衡浓度影响较大，烟气中SO2初始含量对SO3平衡浓度影响相对较小；铜冶炼烟道飞灰促进了烟气中SO2向SO3的转化。
关键字: 铜冶金；热力学；三氧化硫；飞灰；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
