低磷灰铸铁浇铸阳极在500 kA电解槽的应用试验  

Application test of anode assembled by low phosphorus graycast iron in 500 kA aluminum reduction cells

作　　者：孙晓旭[1] 刘朝东[1] Sun Xiaoxu;Liu Chaodong(Shenyang Aluminum and Magnesium Engineering and Research Institute Co.,Ltd.,Shenyang 110001,China)

机构地区：[1]沈阳铝镁设计研究院有限公司,辽宁沈阳110001

出　　处：《轻金属》2024年第1期42-44,共3页Light Metals

摘　　要：本文通过分析磷生铁各元素作用并控制磷生铁组分,实现浇铸后的磷铁环为灰铸铁组织结构,并对比低磷灰铸铁与白铸铁的阳极浇铸情况以及其浇铸阳极在500 kA电解槽上整个服役周期内的性能表现,得出结论:低磷灰铸铁在1 300℃左右的流动性比白铸铁更好;使用低磷灰铸铁的浇铸阳极的Fe-C压降比白铸铁浇铸的阳极的低10 mV左右,节省电量30 kWh/t-Al;低磷灰铸铁浇铸工艺不仅降低了残极的垂直裂纹和掉角的概率,还改善了磷铁环的压脱情况。By analyzing the effects of various elements in phosphorus cast iron,controlling the component of phosphorus cast iron,achieving phosphorus iron ring after casting with gray cast iron structure,comparing the situation of casting and the performance of anodes using the low phosphorus gray cast iron and white cast iron in the whole service cycle on 500 kA aluminum reduction cells,the following conclusions are made:The low phosphorus gray cast iron has better fluidity than white cast iron at around 1300℃;The Fe-C voltage drop of cast anode with low phosphorus gray cast iron is about 10 mV lower than that of cast anode with white cast iron,which can reduce electrical consumption by 30 kWh/t-Al;The casting process of the low phosphorus gray cast iron not only reduces the vertical cracks of the anode butt and the probability of falling corners,but also improves the removal press of the phosphorus iron ring.

关 键 词：低磷灰铸铁 白铸铁 浇铸阳极 铁碳压降 

分 类 号：TF821[冶金工程—有色金属冶金]