提高电解槽炉膛深度技术研究

Study on the technology of increasing depth of aluminum reduction pot cavities

针对电解槽由于炉膛深度设计较低、阳极高度提高和采用低电压技术后提高铝水平、增加阳极覆盖料厚度等原因造成的炉膛深度不足,覆盖料整形困难,覆盖料厚度达不到要求的问题,本文提出在电解槽上沿合适的地方加钢板来提高炉膛深度的方法。本文分析了钢板安装后对电解槽的影响,和钢板的安装位置、安装高度、安装方式。通过工业试验确定了某厂钢板合适的高度为13cm,比较试验槽在提高炉膛深度前后部分指标变化状况,确认提高炉膛深度对电解槽稳定性和热分布没有明显影响。在压板上加焊钢板后,可以提高炉膛深度,保证阳极良好覆盖,并在较大程度上减轻了工人码边加覆盖料的工作量,若提高车间机械化程度还有进一步降低劳动强度的空间。

The low designed depth of pot cavity, larger anode thickness, higher liquid aluminum level and anode cover materials after low - voltage tech- nology application leads to problems of insufficient pot cavity depth, anode cover materials shaping dlfficulties and anode cover height not meeting the re- quirement. As to the problems, the method using adding steel plates at upper edge of pot shell to increase the pot cavity depth was proposed. The influ- ence of adding steel plates on the pot and the position, height, installing method of steel plate were analyzed theoretically. Through industrial tests, the appropriate height of steel plate was determined as 13cm. Comparing the parameters before and after the pot cavity depth improvement, it showed that the pot cavity depth improvement had no obvious influence on the pot stability and heat distribution. Welding steel plates on the platen can improve the pot cavity depth, ensure good anode cover, and reduce the labor intensity to a great extent. If the degree of mechanization is improved further, there is still space to reduce labor intensity.