铝电解阳极高度对生产成本的影响

详细计算了云南某铝厂200kA、240kA及300kA系列电解槽阳极成本,找出适合不同系列电解槽的最佳经济阳极高度,对电解铝生产中阳极高度的选用具有指导意义。

关于铝电解用预焙阳极高度的探讨

指出铝电解用的预焙阳极高度的选择,直接影响到铝电解槽的阳极电压降、直流电耗、阳极消耗量等技术指标。因此,选用何种高度的预焙阳极,是电解槽设计的一个重要条件。本文通过两种高度的预焙阳极的使用效果对比,阐述了适当提高预焙阳极高度的可能性和可操作性。

加高阳极炭块在400kA电解槽上的应用

山东某电解铝企业400 kA电解槽采取适当加高阳极炭块的方法降低阳极毛耗,该厂一系列23万t产能所用的阳极炭块高度均由原来的595 mm提高到620 mm后,换极周期由30 d调整为32 d,阳极毛耗降低了4.2 kg/t-A1,节约成本总计约174万元,为企业带来较大的经济效益。

710mm高阳极在500kA铝电解槽上的应用

本文简要介绍了增高阳极的发展现状,并从电耗、阳极导电速度、电解槽稳定性等方面对比650 mm和710 mm两种阳极高度电解槽。分析结果表明,阳极增高后,压降增加会导致电耗增加;两种电解槽的阳极电流分布趋势一致,导电速度没有显著差异;710 mm高阳极的电解槽稳定性指标优于650 mm阳极电解槽。阳极高度增加后,减少了物料消耗、电费、直接人工和运输费用,每年可创效1 865.33万元,并且可以实现良好的环保效益。

Production of carbon anodes by high-temperature mould pressing

Laboratory-scale carbon anodes were produced by a new method of high temperature mould pressing, and their physico-chemical properties were studied. The influence of mould pressing conditions and coal pitch addition on the bulk density, crushing strength, and oxidation resistance was analyzed. The mierostructure of carbon anodes was investigated by scanning electron microscopy （SEM）, and the mechanism of producing carbon anodes by high-temperature mould pressing was analyzed. The results show that when the anodes are produced by high-temperature mould pressing, coal pitch can expand into the coke particles and fill the pores inside the particles, which is beneficial for improving the quality of prebaked anodes. The bulk density of carbon anodes is 1.64-1.66 g/cm3, which is 0.08-0.12 g/cm3 higher than that of industrial anodes, and the oxidation resistance of carbon anodes is also significantly improved.