工艺条件对铜电解精炼过程直流电耗的影响
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摘要
采用单因素试验研究了电解液温度(40-70℃)、电流密度(200-320A/m~2)、H_2SO_4浓度(110-230g/L)、Cu~(2+)浓度(25-65g/L)、极间距(20-35mm)等工艺条件对铜电解精炼过程直流电耗的影响规律。结果表明,随着电流密度和极间距的增大,直流电耗显著升高,随电解液温度和硫酸浓度的增加而显著降低;随着电解液中铜离子浓度的增大,直流电耗先急剧降低,然后趋于平稳,在55g/L时电耗最小。
Influences of electrolyte temperature(40～70℃),current density(200～320 A/m~2),sulfuric acid concentration(110～230 g/L),cupric ion concentration(25～65 g/L),and electrode spacing(20～35 mm)on power consumption of copper electrorefining were investigated by single factor experiment.The results show that power consumption rises significantly with increase of current density and electrode spacing,and drops remarkably with rise of electrolyte temperature and sulfuric acid concentration.Upon rising of Cu~(2+) concentration,power consumption drops sharply firstly and then tends to maintain stable,the minimum power consumption is obtained with Cu~(2+) concentration of 55 g/L.
Influences of electrolyte temperature(40～70℃),current density(200～320 A/m~2),sulfuric acid concentration(110～230 g/L),cupric ion concentration(25～65 g/L),and electrode spacing(20～35 mm)on power consumption of copper electrorefining were investigated by single factor experiment.The results show that power consumption rises significantly with increase of current density and electrode spacing,and drops remarkably with rise of electrolyte temperature and sulfuric acid concentration.Upon rising of Cu~(2+) concentration,power consumption drops sharply firstly and then tends to maintain stable,the minimum power consumption is obtained with Cu~(2+) concentration of 55 g/L.
引文
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[14]DAS S C,KRISHNA P G.Effect of Fe(Ⅲ)during copper electrowinning at higher current density[J].International Journal of Mineral Processing,1996,46(1/2):91-105.
[2]高秋平.降低铜电解精炼直流电消耗的途径[J].江苏冶金,2000(4):77-79.
[3]梁文林.铜电解过程中的节能措施与效益[J].有色冶金节能,2004,21(3):4-5.
[4]别良伟.铜电解精炼过程中的节能措施与实践[J].铜业工程,2011(1):43-45.
[5]林欣,陈崇善.提高铜电解电流效率的生产实践[J].铜业工程,2014(2):23-25.
[6]宣善伦.高电流密度下生产阴极铜的实践[J].中国有色冶金,2007,36(6):27-29.
[7]周松林.高强化铜电解精炼新工艺与生产实践[J].有色金属(冶炼部分),2013(2):1-4.
[8]吴继烈,ANDREAS FILZWIESER.高电流密度铜电解技术的理论及实践[J].有色金属(冶炼部分),2014(2):13-17.
[9]王成国,许卫,史建远.降低铜电解直流电单耗的实践[J].中国有色冶金,2009,38(5):23-26.
[10]王刚,柳智.降低铜电解精炼过程中的直流电耗[J].山西冶金,2014(3):58-60.
[11]王宏丹,任兵芝,夏文堂,等.工艺条件对锌电解能耗的影响[J].有色金属(冶炼部分),2018(3):1-4.
[12]KHOURAIBCHIA Y.Improving the fundamental understanding of copper electrowinning[D].Logan,US:University of Utah,2009.
[13]郭学益,陈胜利,梁永宣,等.工艺条件对电积法制备铜粉的影响[J].北京科技大学学报,2011,33(2):182-187.
[14]DAS S C,KRISHNA P G.Effect of Fe(Ⅲ)during copper electrowinning at higher current density[J].International Journal of Mineral Processing,1996,46(1/2):91-105.