【摘要】 利用熔融还原法的基本原理 ,对低品位氧化锌矿的处理进行研究 ;分析了铁浴熔融还原法和铝浴熔融还原法的基本理论 ,进行了实验研究 ,并各自考察了温度、时间、碱度的影响。得到以下适宜的工艺条件 :铝浴法 ,还原温度 110 0℃ ,时间 45min ,碱度(四元 ) 1.1;由此试验条件得到以下技术指标 :氧化锌粉中ω(ZnO) =98%～ 99% ,ω(Pb) =1.0 %左右 ,锌挥发率大于 90 % ,锌回收率预计达 95 % ,渣中ω(Zn) <3% ,ω(Pb) <0 .2 % ;与现有的火法处理方法相比 ,初步认为熔融还原法更适于处理氧化锌矿更多还原

【Abstract】 According to basic principles of the melting reduction process, a treatment of low-grade zinc oxide ores is investigated. The authors analyse basic principles of the iron bath melting reduction process and the aluminium bath melting reduction process, conduct their experiments, and investigate the effects of such test conditions as temperature, time and basicity on the experiments, respectively. The suitable technological conditions obtained are as follows: for the aluminium bath melting reduction process, a reduction temperature of 1?100 ℃,a reduction time of 45 min, and a basicity of 1.1. Under the above test conditions, the following technical results can be obtained: 98%～99% ZnO and about 1.0% Pb contents of zinc oxide powder, a zinc volatilization rate of above 90%, an expected zinc recovery of 95%, and below 3%Zn and 0.2%Pb contents of zinc residue. Compared with the existing pyrometallurgical processes, the melting reduction process is considered to be more suitable for treatment of zinc oxide ores.更多还原