摘要
通过热力学计算,得出湿法炼锌铅银渣烟化挥发过程中ZnO、FeO、PbO、Fe_2O_3还原挥发所需的P_(CO)/P_(CO_2)值,并对影响烟化挥发的空气过剩系数α值、渣型等因素进行了初步研究。结果表明:熔炼初期α宜控制在0.8～1.0,还原阶段宜控制在0.6～0.7,此条件能较好地满足烟化挥发过程中热量和还原性气氛的要求。对FeO-SiO_2-CaO三元系热力学研究表明,选择CaO 10%～20%、FeO 40%～55%、SiO_230%～35%的渣型,渣熔化温度小于1150℃,黏度在0.5～5 Ps·s范围内。
The P_（CO）/P_（CO_2）value needed by ZnO,FeO,PbO,Fe_2O_3 reduction and volatilization in fuming volatilization process of Pb-Ag residue in hydrometallurgy of zinc was obtained by thermodynamic calculation,and the factors like excess air coefficient a value,residue type,etc.which influencing fuming volatilization were preliminarily studied.The results showed that the excess air coefficient a should be controlled in 0.8～1.0 at preliminary stage,0.6～0.7 at reduction stage,and the above conditions could meet the requirements for heat and reducing atmospheres in fuming volatilization process.The research of FeO-SiO_2-CaO ternary system thermodynamics showed that the melting temperature of residue constituted with 10%～20%CaO,40%～55%FeO and 30%～35% SiO_2 is below 1150℃,and its viscosity within 0.5～5Ps·s.
出处
《中国有色冶金》
北大核心
2011年第5期49-53,共5页
China Nonferrous Metallurgy
作者简介
戴兴征（1968-），男，安徽人，硕士，高级工程师，云南云铜锌业股份有限公司总工程师、副总经理，长期从事有色冶炼工作。
