摘要
本文采用石灰乳沉淀-铁粉置换法从氯化液中回收海绵铜,获得较好的效果。试验结果表明,Ca(OH)2乳液浓度为20%,沉淀反应pH=0,沉淀时间为3 h,置换时间为3 h,终点pH=0.42时,小型试验获得的产品海绵铜纯度为91.8%,二次滤液Cu浓度为4.13 mg/L;中间试验获得的产品海绵铜纯度为88.2%,二次滤液Cu浓度为15.1 mg/L。结果显示,产品海绵铜纯度均超过88%,Cu基本全部被置换,中间试验指标略低于小型试验指标。该工艺切实可行,达到预期。
This paper uses the lime milk precipitation-iron powder replacement method to recover sponge copper from chlorinated solution,achieving good results.The test results show that when the concentration of Ca(OH)2 lotion is 20%,the precipitation reaction pH=0,the precipitation time is 3 h,the replacement time is 3 h,and the end point pH=0.42,the purity of sponge copper obtained in the small-scale test is 91.8%,and the concentration of secondary filtrate Cu is 4.13 mg/L;the purity of sponge copper obtained from the intermediate test is 88.2%,and the concentration of Cu in the secondary filtrate is 15.1 mg/L.The results show that the purity of sponge copper in the product exceeds 88%,and almost all Cu is replaced,and the intermediate test indicators are slightly lower than the small-scale test indicators.This process is feasible and meets expectations.
作者
胡磊
梁新星
郭持皓
孙贯永
梁东东
HU Lei;LIANG Xinxing;GUO Chihao;SUN Guanyong;LIANG Dongdong(BGRIMM Technology Group,Beijing 100160,China;Norin Mining Limited,Beijing 100053,China)
出处
《中国资源综合利用》
2024年第1期9-12,18,共5页
China Resources Comprehensive Utilization
基金
矿冶科技集团基金资助项目(YJT2017012)。
关键词
石灰乳沉淀
铁粉置换
氯化液
海绵铜
lime milk precipitation
iron powder replacement
chlorination solution
sponge copper
