摘要
采用杂铜进行电解精炼时,每一批次原料的杂质种类及含量范围有较大的波动,难以借鉴以矿铜为原料的电解精炼生产经验。在铜电解精炼中加入添加剂是提升阴极铜质量的有效措施之一,本文对杂铜电解精炼中添加剂骨胶、硫脲、盐酸的行为和作用机理进行了研究:骨胶的加入可以使阴极铜表面平整光滑,但需要控制好温度(约65℃),并要定期适量加入;盐酸离子作为添加剂,可增加电铜表面光亮度,氯离子浓度应控制在0.04～0. 05 g/L;骨胶的加入量为硫脲量5～6倍。生产实践中,添加剂用量会受到电流密度和酸浓度的影响,需要进行试验确定最优生产条件。
When scrap copper is used for electrolytic refining,due to the large fluctuations in the types and content of impurities in each batch of raw materials,it is difficult to learn from the experience of electrolytic refining production using copper ore as raw material.Adding additives in copper electrolytic refining is one of the effective measures to improve the quality of copper cathode.In this paper,the behavior and mechanism of the additives such as bone glue,thiourea and hydrochloric acid in scrap copper refining were studied,and found that the addition of bone glue could make the copper surface of the cathode smooth,but the temperature was needed to control(about 65℃),and the additives was added in moderation at regular intervals;hydrochloric acid ion as an additive could increase the brightness of the surface of the copper,and chloride ion concentration should be controlled at 0.04~0.05 g/L;the amount of bone glue added was 5-6 times the amount of thiourea.In production practice,the amount of additive is affected by current density and acid concentration,and testing is required to determine the optimal production conditions.
作者
谭芳香
黄秀英
TAN Fang-xiang;HUANG Xiu-ying
出处
《中国有色冶金》
CAS
2019年第2期23-25,共3页
China Nonferrous Metallurgy
关键词
废杂铜
电解精炼
添加剂
scrap copper
electrolytic refining
additives
