粗铅无氟电解精炼新工艺研究
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- 英文论文题名：The study of the process of electrolytic refining of cude lead in a novel fluoride-free electrolyte
- 论文作者：张轩 ; 潘军青
- 英文论文作者：Xuan Zhang ; Junqing Pan ; State Key Laboratory of Chemical Resource Engineering ; Beijing University of Chemical Technology
- 年：2016
- 作者机构：北京化工大学化工资源有效利用国家重点实验室;
- 论文关键词：高氯酸 ; 电解精炼
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十分会：化学电源
- 语种：中文
- 分类号：TF812
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十分会 ; 化学电源
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：217k
- 原文格式：D
- 会议级别：全国
摘要
传统的粗铅电解精炼法-柏兹法存在高能、低效、氟污染等问题,本研究提出了一种以高氯酸(HClO_4)作为新型的电解液用于粗铅的电解精炼工艺。本研究详细地考察了粗铅在新型电解液高氯酸-高氯酸铅体系的电解工艺和电极过程,研究了不同电解质浓度、不同温度、以及不同电流密度对槽压,电流效率,生产效率和电极极化的影响,确定最佳的电解工艺条件为:高氯酸浓度:3.2 mol L~(-1),高氯酸铅浓度:0.5 mol L~(-1),温度:55℃,电流密度:300 A m~(-2),极距:25 mm。在优化条件下,电解精炼过程的槽压约为0.03 V,电流效率为99.7%,产品纯度高达99.999%,较传统的Betts工艺节省了约63%的电能。
The research systemtically studied the the electrolytic process and the electrode processes in perchloric acid and lead perchlorate(HClO_4-Pb(ClO_4)_2).The influences of the concentration of HClO_4,the concentration of Pb(ClO_4)_2,the electrolysis temperature and the current density on the electrolyzer voltage,the current efficiency,the production efficiency and electrode polarity during the processes of electrolytic refining or electrode processes were investigated.The optimal conditions of electrolytic refining were followed:HClO_4:3.2 mol L~(-1),Pb(ClO_4)_2:0.5 mol L~(-1),electrolysis temperature is 55 ℃,current density is 300 A m~(-2) and electrode distance is 25 mm.Under the optimal conditions,the electrolyzer voltage was within 0.03 V,the purity of 99.999%refined lead was obtained with the current efficiency of 99.7%,and the more than 63%electric energy was saved.
The research systemtically studied the the electrolytic process and the electrode processes in perchloric acid and lead perchlorate(HClO_4-Pb(ClO_4)_2).The influences of the concentration of HClO_4,the concentration of Pb(ClO_4)_2,the electrolysis temperature and the current density on the electrolyzer voltage,the current efficiency,the production efficiency and electrode polarity during the processes of electrolytic refining or electrode processes were investigated.The optimal conditions of electrolytic refining were followed:HClO_4:3.2 mol L~(-1),Pb(ClO_4)_2:0.5 mol L~(-1),electrolysis temperature is 55 ℃,current density is 300 A m~(-2) and electrode distance is 25 mm.Under the optimal conditions,the electrolyzer voltage was within 0.03 V,the purity of 99.999%refined lead was obtained with the current efficiency of 99.7%,and the more than 63%electric energy was saved.
引文
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[2]Ferracin,L.,Chacon,A.,Davoglio,R.,Rocha,L.Hydrometallurgy.2002,65:137
[2]Ferracin,L.,Chacon,A.,Davoglio,R.,Rocha,L.Hydrometallurgy.2002,65:137