首页>
外国专利>
Process for production of aluminum by eletrolise of alumina, aluminum pot eletroprodutor and anode for production of aluminium by eletrolise eletrolitica alumina
Process for production of aluminum by eletrolise of alumina, aluminum pot eletroprodutor and anode for production of aluminium by eletrolise eletrolitica alumina
展开▼
机译:氧化铝,电解铝电解锅生产铝的方法,电解铝电解生产铝的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method of producing aluminum by electrolysis of alumina which is dissolved in a molten cryolite bath is described which uses a dimensionally stable anode comprising a substrate composed of a conductive ceramic, a cermet, a metal, an alloy, an intermetallic compound and/or carbon and a coating thereon comprising a rare earth metal oxide or a rare earth metal oxyfluoride which is preserved by maintaining a concentration of the rare earth metal in the electrolyte. By adding to the bath a contamination inhibiting agent the contamination of the aluminum by substrate components due to corrosion of the substrate by the electrolyte contacting the substrate at imperfections of the coating may be inhibited. The contamination inhibiting agent may be a compound of an alkali or an alkaline earth metal, such as a fluoride, in particular LiF or MgF2.
展开▼