大型预焙铝电解槽低电压工艺节能实践

Practices on energy saving of high amperage pre-baked aluminum reduction pots under low voltage process

从"低电压"工艺的概念入手,结合某铝厂大型预焙槽应用实践,指出无论采取锂盐还是普通电解质体系,实施"低电压"工艺中十分重要的环节是适当降低极距。在"高电压"工艺向"低电压"工艺转化过程中,做好技术参数匹配,以及能量和物料两个平衡的动态控制,找到实现能耗最低极距的"临界点",是"低电压"工艺能否成功的关键。

Based on low voltage process, reducing ACD to proper distance is an important step for implementation of the low voltage process whether lithium salt or common electrolyte system is adopted combining with practices on high amperage pre - baked aluminum reduction pots in the smelter. During trans- formation process from high voltage to low voltage, in order that low voltage process is successfully realized, some steps are important, such as matching technical parameters, dynamic controlling for energy and materials balance and finding critical point of ACD for realizing the lowest energy.