电解铝预焙槽二次启动延长槽寿命的探讨  

Technique of Prolonging Pre-Baked Cell Life in Second Start-up

作　　者：王荣铸[1] 王宇[1] 宋明栋[1] 张波[1] 周玉豹[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《有色金属（冶炼部分）》2008年第5期26-28,31,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：针对小修槽自身的特点,并借鉴以往大修槽的启动经验,对预焙槽二次启动延长槽寿命的工艺进行了探讨。认为:炉膛修补是保证电解槽寿命的先决条件;焙烧时的温度控制需讲究平稳均匀的原则,而采用纯石墨焙烧以及利用软连接分流技术可以使焙烧温度得到有效的控制;湿法小效应启动比较符合二次启动的特殊情况,而设定电压和效应都是后期管理中的控制关键。The technique of prolonging pre-baked cell life in second start-up according to the features of minor and major repair is discussed. It is considered that precondition is repairing furnace hearth. And temperature should be carried stably by flexible connection and current diffusion in process of roasting. In order to accord with the special cases of second start-up, it is suggested on adopting wet method with low effect. The certain voltage value and effect coefficient are both key control in later period management.

关 键 词：小修槽 预焙槽 二次启动 槽寿命 工艺 

分 类 号：TF821[冶金工程—有色金属冶金]