99.999％纯铝的制取大約在三十年前,就有人开始用三层电解法制取99.999％的純鋁。这种方法在胡波薩的试验完成之后,曾于法国和瑞士,以及欧洲的其他国家中流传着。从1953年起,加拿大和美国也开始制取数量不多的純鋁。在德国,99.999％純鋁中金屬杂質(Fe、Si、Cu、Zu、Ti)的容許总含量为0.01％。制取純鋁时,要求电解質純度高、爐程稳定和均衡,以及电流强度稳定。电解时采用的石墨电极灰分 About 99.999% of pure aluminum was made about thirty years ago and some began to make 99.999% pure aluminum by three-layer electrolysis. This method, circulated in France and Switzerland, as well as in other European countries, after the completion of the experiment in Huboosa. Since 1953, Canada and the United States have also begun to produce a small amount of pure aluminum. In Germany, the allowable total content of metal impurities (Fe, Si, Cu, Zu, Ti) in 99.999% pure aluminum is 0.01%. Preparation of pure aluminum, requiring high purity electrolyte, furnace stable and balanced, and the current intensity of stability. Graphite electrode ash used in electrolysis