超重力强化分离回收铜浮渣中铅与铜  

Efficient separation of lead and copper from copper scum enhanced by super-gravity

作　　者：高金涛 周皓羽 兰茜 李想 郭占成 GAO Jintao;ZHOU Haoyu;LAN Xi;LI Xiang;GUO Zhancheng(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083

出　　处：《有色金属科学与工程》2023年第2期161-170,共10页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(52174275,51774037)。

摘　　要：粗铅精炼除铜过程会产生大量铜浮渣,其中含有铅、铜等多种金属资源。基于铜浮渣中金属资源的高效回收,本研究提出了一种超重力强化分离铜浮渣中铅与铜的新方法。系统研究了超重力条件下,温度、重力系数及时间对铅-铜分离的影响规律,研究发现:在介于铅、铜熔点之间的温度下,利用超重力场强化可实现铜浮渣中金属铅液与铜合金颗粒的液-固分离。在T=700~750℃、G=450~600条件下,仅需180~240 s即可实现铜浮渣中金属铅液与铜合金的高效分离。分离得到的金属铅中Pb的纯度达到99.09%~99.17%、Pb的回收率达到98.02%~98.18%,分离得到的铜合金中Cu的回收率达到99.79%~99.87%。本研究为热态铜浮渣中铅、铜等金属资源的高效回收提供一种新思路。A large amount of copper scum is produced from the refining process of crude lead,which includes various metallic resources of lead,copper and arsenic.In this study,a novel method was proposed to efficiently recover lead and copper from the copper scum via super-gravity,and the effects of temperature,gravity coefficient and time on phase separation of lead and copper were systematically studied.It was found that the liquid lead and copper alloy particles were efficiently separated from copper scum by enhancing super gravity at a temperature between the melting point of lead and copper.Under the conditions of T=700-750℃and G=450-600,the lead was efficiently recovered into metallic lead within 180-240 s with a high purity of 99.09%-99.17%and a high recovery ratio of 98.02%-98.18%,while the copper was efficiently separated as copper alloy with a high recovery ratio of 99.79%-99.87%.On this basis,this study provides a new approach to efficient recovery of metallic lead and copper resources from hot copper scum.

关 键 词：铜浮渣 超重力分离 金属铅 铜合金 

分 类 号：TF811[冶金工程—有色金属冶金] TF812