铝电解槽用铝基打壳锤头的研究与应用  

Research and Application of Aluminum Shelling Hammer for Aluminum Reduction Cell

作　　者：曹永峰 张华锋 管瑞江 马军义 王慧瑶 CAO Yongfeng;ZHANG Huafeng;GUAN Ruijiang;MA Junyi;WANG Huiyao(Zhengzhou Nonferrous Metals Research Institute Ltd of Chalco,Zhengzhou 450041,China;Sichuan Guangyuan Zhongfu Branch,Guangyuan 628000,China)

机构地区：[1]中铝郑州有色金属研究院有限公司,河南郑州450041 [2]四川广元中孚分公司,四川广元628000

出　　处：《绿色矿冶》2024年第1期49-54,共6页Sustainable Mining and Metallurgy

摘　　要：打壳锤头在强磁场、高温环境下工作,受熔盐电解质的腐蚀以及下料口硬质壳面的冲击磨损,打壳锤头逐渐消耗,其中的铁、镉等杂质进入原铝液中影响电解槽原铝品位。本文开展了专用铝基打壳锤头的试验研究及开发,对铝基打壳锤头试样的耐磨、耐热、耐蚀等性能进行研究,找出适宜打壳作业的性能组合,试验数据结果表明,铝合金锤头的耐高温性、硬度、耐磨性及耐蚀性均能达到现场使用要求。实际应用效果表明,使用铝基锤头后电解槽原铝液中的铁含量降低了0.0178%,从根本上解决了铁质打壳锤头消耗磨损造成原铝污染的问题。在25万t/a系列上推广,每年节约成本和因铝品质提升而带来的效益可达132万元,经济效益良好。The shelling hammer works in a strong magnetic field and high temperature environment.Due to the corrosion of molten salt electrolyte and the impact wear of the hard shell surface of the discharge port,the shelling hammer is gradually consumed.The impurities such as iron and cadmium enter the original aluminum liquid and affect the original aluminum grade of the electrolytic cell.In this paper,the experimental research and development of special aluminum-based shell hammer were carried out.The wear resistance,heat resistance and corrosion resistance of aluminum-based shell hammer samples are studied,and the performance combination suitable for shelling operation was found out.The test data show that the high temperature strength,hardness,wear resistance and corrosion resistance of aluminum alloy hammer can meet the requirements of field use.The practical application results show that the iron content in the original aluminum liquid of the electrolytic cell is reduced by 0.0178%after using the aluminum-based hammer.The aluminum-based hammer fundamentally solves the problem of primary aluminum pollution caused by the consumption and wear of the iron shelling hammer.If it is promoted on the 250000 t/a series of electrolytic cells,the annual cost savings and the benefits brought by the improvement of aluminum quality can reach 1.32 million yuan,and the economic benefits are good.

关 键 词：铝电解槽 原铝品位 打壳锤头 铁质锤头 耐磨性 耐高温性 抗压性 性能 

分 类 号：TF821[冶金工程—有色金属冶金]