低阻高性能阳极钢爪材料开发设计及工业试验

阳极钢爪是电解铝阳极导杆与炭块间的连接结构，需要在电解环境下给电解槽传输强大的直流电流并夹持阳极碳块，因此需要其具有较高的高温强度、高温导电性以及较低的成本。当前阳极钢爪材料缺乏行业规范，生产原料、生产方式等控制不严格，使得钢爪存在电阻大、压降高、强度低等问题。针对这些问题开发了低阻高性能高强度阳极钢爪材料，并在某300 kA系列试验槽进行了工业试验。工业试验结果表明，低阻高性能阳极钢爪压降33.9 mV，较现用新钢爪降低42.7 mV，降电压效果显著，为电解槽进一步节能降耗提供了空间。

Development and Industrial Test of Low Resistance and High Performance Anode Steel Claw Material

Anode steel claw is connection structure between anode guide rod and carbon block of electrolytic aluminum. It needs to transmit strong DC current to electrolytic cell and hold anode carbon block under electrolytic environment. Therefore, it needs to have high temperature strength, high temperature conductivity and low cost. At present, the anode steel claw material industry lacks industry standards, and the production materials and production methods are not strictly controlled. This makes the steel claws have problems such as high resistance, high voltage drop, and low strength. In order to solve these problems, low resistance, high performance and high strength anode steel claw material was developed and industrial test in a 300 kA series test tank was carried out. The industrial test results show that voltage drop of low resistance and high performance anode steel claw is 33.9 mV, which is 42.7 mV lower than that of new steel claw. It can provide space for further energy saving and consumption reduction of electrolytic cell.