铜闪速熔炼过程中渣-冰铜-气三相平衡研究  

Study on Slag-Matte-Gas Equilibrium in Copper Flash Smelting Process

作　　者：赵宝军 谢岁 李明周[1] ZHAO Bao-jun;XIESui;LI Ming-zhou(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Inlernational Research Institute for Resources,Kncrgy,Environment and Materials,Jiangxi University of Science and Technology,Nanchang 330000,China;Julius Kruttschnitt Mineral Research C entre.University of Queensland.Brisbane,Australia)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000 [2]江西理工大学中澳REEM国际研究院,南昌330000 [3]Julius Kruttschnitt Mineral Research Centre,University of Queensland,Brisbane 4072,Australia

出　　处：《有色金属（冶炼部分）》2022年第3期38-43,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：2019年江西省博士后择优资助项目(2018KY15)。

摘　　要：在铜闪速熔炼中,高富氧强化熔炼可提高单炉处理能力及烟气中SO_(2)浓度,但也增加了控制冰铜品位及渣含铜的难度。熔体温度需高于熔体的液相温度方可保证熔体的流动性,使熔体在沉淀池中顺利分层及排放。但过高的温度会增大耐火材料侵蚀,缩短炉子寿命。为确定优化的生产条件,通过冷淬、EPMA分析技术测定了铜闪速熔炼过程中熔炼渣、冰铜的显微结构及成分,并通过FactSage 8.1热力学分析软件研究了冰铜品位、硫分压及氧分压之间的关系,以及熔炼渣成分(Fe/SiO_(2)、Al_(2)O_(3)、CaO、MgO、ZnO含量)和硫分压对熔炼渣液相温度的影响。The process of copper flash smelting with high-oxygen enrichment has high productivity and high concentration of SO_(2)in the gas, but it is difficult to control matte grade and copper content in slag.The smelting temperature should be higher than liquidus temperature of slag to ensure its fluidity for efficient separation of matte and slag, and smooth tapping of slag.However, excessive temperature accelerates erosion of refractory and reduces furnace life.To obtain the optimized production parameters, microstructures and phase compositions of quenched slag and matte from a copper flash smelting furnace were determined by electron probe X-ray microanalysis(EPMA).FactSage 8.1 software was used to calculate correlations among matte grade, sulfur partial pressure and oxygen partial pressure.Effects of slag composition(Fe/SiO_(2),Al_(2)O_(3),CaO,MgO,ZnO concentrations) and sulfur partial pressure on liquidus temperature of slag were also discussed.

关 键 词：闪速熔炼 强化熔炼 熔炼渣 液相温度 氧分压 硫分压 

分 类 号：TF811[冶金工程—有色金属冶金]