铝电解槽极距的计算方法及验证

Computation and validation of ACD for aluminum reduction cell

本文介绍了电解槽平均极距及极距分布的计算和测量方法,通过测试和取样化验相结合的方式分析了炭渣对极距的影响,列举了极距诊断的真实案例,并针对极距偏低和极距分布不均匀的问题提出了解决方案。经过一年的跟踪试验,试验槽取得了电流效率提高0.7个百分点、吨铝直流电耗降低145 kWh的良好效果。

The paper introduced the computation and measurement methods for ACD and its distribution in aluminum reduction cells,and analyzed the impact of carbon dust on ACD through tests and sample laboratory analysis.Based on actual diagnosing cases for low ACD and uneven distribution problems,a feasible solution was proposed to improve the cell state.After one year’s optimization and tracing test,the pilot cell achieved good effect with current efficiency increasing by 0.7 percentage points,and DC power consumption decreasing by 145 kWh per ton of aluminum.