Abstract Results from an laboratory test campaign show that of the parameters included in the experimental plan design; average operational temperature, cryolite ratio (CR) and cathode grade, the operational temperature had the most statistically significant effect on the formation of chemically induced sludge. However, the precipitation of cryolitic species under the metal pad (i.e. chemically induced sludge) is also a function of concentration polarization and alumina depletion rate. The interactions between the carbide layers and the sludge can explain the increased time of back-feeding for some cathode linings. The result of interaction between chemically induced sludge and alumina-rich sludge, is a low-density mixture that is back-fed into the bulk of the bath in the cell.

中文翻译：

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Hall-Héroult 工艺中化学诱导污泥的形成

摘要 实验室测试活动的结果表明，包含在实验计划设计中的参数；平均操作温度、冰晶石比率 (CR) 和阴极等级，操作温度对化学诱导污泥的形成有最显着的影响。然而，金属垫下冰晶石物质的沉淀（即化学诱导的污泥）也是浓差极化和氧化铝消耗率的函数。碳化物层和污泥之间的相互作用可以解释某些阴极衬里的回料时间增加。化学诱导污泥和富含氧化铝的污泥之间相互作用的结果是一种低密度混合物，它被反馈到电解槽的大部分浴槽中。