摘要
研究了采用NH3·H2O-(NH4)2CO3体系从低品位铅冰铜中加压氨浸分离铜锌,考察了氨水浓度、氧气压力、搅拌速度、碳酸铵浓度、温度、液固体积质量比和浸出时间对金属浸出率的影响。结果表明:在氨水浓度3.5 mol/L、氧气压力0.8 MPa、搅拌速度800 r/min、碳酸铵浓度1.5 mol/L、温度100℃、液固体积质量比6/1条件下浸出4 h,铜、锌浸出率分别为81.99%和70.20%,而铁、铅浸出率仅4.11%和1.78%,铜、锌得到选择性浸出。
The separation of Cu and Zn from low grade lead matte with NH 3·H 2O-(NH 4)2CO 3 system by ammonia pressure leaching was studied.The effects of NH 3·H 2O concentration,oxygen pressure,stirring speed,(NH 4)2CO 3 concentration,temperature,liquid volume/solid mass and leaching time on metal leaching rate were investigated.The results show that under the conditions of NH 3·H 2O concentration of 3.5 mol/L,oxygen pressure of 0.8 MPa,stirring speed of 800 r/min,(NH 4)2CO 3 concentration of 1.5 mol/L,temperature of 100℃and liquid volume/solid mass of 6/1 for 4 h,the leaching rates of Cu and Zn are 81.99%and 70.20%,respectively.The leaching rates of Fe and Pb are only 4.11%and 1.78%,respectively.Cu and Zn are selectively leached.
作者
冯金婷
秦庆伟
汤海波
陈荣升
曾素琴
徐文俊
王明细
FENG Jinting;QIN Qingwei;TANG Haibo;CHEN Rongsheng;ZENG Suqin;XU Wenjun;WANG Mingxi(Key Laboratory for Ferrous Metallurgy and Resource Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Dajiang Environmental Protection Technology Co.,Ltd.,Huangshi 435005,China)
出处
《湿法冶金》
CAS
北大核心
2023年第1期8-12,共5页
Hydrometallurgy of China
基金
湖北省揭榜制科技项目(2020BED026)
2020年科技人员服务企业专项行动•湖北专项(第二批)立项项目。
关键词
低品位铅冰铜
氧压
氨
浸出
铜
锌
low grade lead matte
oxygen pressure
ammonia
leaching
Cu
Zn
