提高流水线镁电解电解槽使用寿命生产实践  

Plant Practice to Improve Service Life of Pipeline Magnesium Electrolytic Cell

作　　者：马尚润 朱福兴[1] 李开华[1] MA Shang-run;ZHU Fu-xing;LI Kai-hua(State Key Laboratory of Vanadium and Titanium Comprehensive Utilization,Pangang Group Rescarch Institute Co.,Ltd.,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀钢集团研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《有色金属（冶炼部分）》2020年第8期56-62,共7页Nonferrous Metals（Extractive Metallurgy)

基　　金：四川省科技计划项目(2019YJ0687)。

摘　　要：针对流水线镁电解电解槽运行过程中的内衬破损、电极变形和电解槽泄漏等严重影响电解槽使用寿命问题,分析了影响电解槽使用寿命的关键因素,提出了提高电解槽使用寿命的措施。研究结果表明,影响流水线镁电解电解槽使用寿命的主要原因为:电解槽砌筑质量不达标、电解槽启槽制度不规范和电解槽运行过程中电极电流分布不均匀。在工业生产中,通过严格控制耐火材料材质、砌筑的水平度和垂直度、砖缝填充物及缝隙来规范电解槽砌筑水平;严格控制烤槽的升温速率及烤槽时间、启槽首包料中MgCl2含量为50%,并按照"少量多次"理念补加熔体来建立合理的电解槽启动制度;电解槽电极电流的检测及异常处理来匀化电极电流分布,可大幅提高电解槽使用寿命,进一步凸显流水线镁电解技术在海绵钛生产企业应用的优势。To address service life of electrolytic cell seriously affected by lining damage,electrode deformation and electrolytic cell leakage during pipeline magnesium electrolysis,maih reasons affecting service life of electrolytic cell were analyzed and measures to improve service life of electrolytic cell were put forward.The results show that main factors affecting service life of pipeline magnesium electrolytic cell include non-qualified masonry of electrolytic cell,non-standard starting system of electrolytic cell,and non-uniform distribution of electrode current during operation of electrolytic cell.In industrial production,construction level of electrolytic cell is regulated through strict control of refractory materials,levelness and perpendicularity of masonry,brick joint filler and gap.Reasonable starting system of electrolytic tank is established through strict controlling of heating rate and baking time of baking tank,mass fraction of MgCl2 in the first batch of baking tank being 50%,and adding melt according to concept of"low intensity and high frequency".Electrode current distribution is homogenized by detection electrode current of electrolyzer and abnormal treatment.As a result,service life of electrolytic cell is greatly improved,and advantages of pipeline magnesium electrolysis technology in sponge titanium production enterprises are further highlighted.

关 键 词：流水线镁电解 电解槽 使用寿命 生产实践 

分 类 号：TF822[冶金工程—有色金属冶金]