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    • 1. 发明授权
    • Stable anodes for aluminium production cells
    • 铝生产电池的稳定阳极
    • US5904828A
    • 1999-05-18
    • US817246
    • 1997-04-11
    • Jainagesh A. SekharJames Jenq LiuJean-Jacques Duruz
    • Jainagesh A. SekharJames Jenq LiuJean-Jacques Duruz
    • C25C3/12
    • C25C3/12
    • An anode for the electrowinning of aluminium by the electrolysis of alumina dissolved in a molten fluoride electrolyte comprises a porous combustion synthesis product of nickel, aluminium, iron, copper and optional doping elements in the amounts 50-90 wt. % nickel, 3-20 wt. % aluminium, 5-20 wt. % iron, 0-15 wt. % copper and 0-5 wt. % of one or more of chromium, manganese, titanium, molybdenum, cobalt, zirconium, niobium, tantalum, yttrium, cerium, oxygen, boron and nitrogen. The combustion synthesis product contains metallic and intermetallic phases. A composite oxide surface is produced in situ by anodic polarization of the porous combustion synthesis product in a molten fluoride electrolyte containing dissolved alumina. The in situ formed composite oxide surface comprises an iron-rich relatively dense outer portion, and an aluminate-rich relatively porous inner portion.
    • PCT No.PCT / IB95 / 00801 Sec。 371日期1997年04月11日 102(e)日期1997年4月11日PCT提交1995年9月27日PCT公布。 公开号WO96 / 12833 日期1996年5月2日通过电解溶解在熔融氟化物电解质中的氧化铝电解铝的阳极包括镍,铝,铁,铜的多孔燃烧合成产物和50-90重量%的任选的掺杂元素。 %镍,3-20重量% %铝,5-20wt。 %铁,0-15重量% %铜和0-5重量% 铬,锰,钛,钼,钴,锆,铌,钽,钇,铈,氧,硼和氮中的一种或多种的%。 燃烧合成产物含有金属和金属间相。 复合氧化物表面通过多孔燃烧合成产物在含有溶解的氧化铝的熔融氟化物电解液中的阳极极化原位产生。 原位形成的复合氧化物表面包含富含铁的相对致密的外部部分和富含铝酸盐的相对多孔的内部部分。
    • 2. 发明授权
    • Carbon bodies resistant to deterioration by oxidizing gases
    • 通过氧化气体耐恶化的碳体
    • US5985114A
    • 1999-11-16
    • US929497
    • 1997-09-15
    • Jainagesh A. SekharJames Jenq LiuJean-Jacques Duruz
    • Jainagesh A. SekharJames Jenq LiuJean-Jacques Duruz
    • C04B41/50C04B41/85C25C3/12C25B11/00
    • C04B41/009C04B41/5006C04B41/85C25C3/125C04B2111/00879
    • A carbon body, in particular a pre-baked anode of an electrolytic cell for the production of aluminium by the electrolysis of alumina in a molten fluoride electrolyte is treated over its surfaces to improve the resistance thereof to deterioration during operation of the cell by air and oxidizing gases released at the anode, by treating the body with a treating liquid comprising a precipitable boron-containing compound and an additive, said additive being present in an amount so that substantially no separate phase from said the precipitate of said boron-containing compound is formed upon curing. Suitable boron oxide additives include colloidal alumina, silica, yttria, ceria, thoria, zirconia, magnesia, lithia, monoaluminium phosphate, cerium acetate and mixtures thereof. The same treatment can also be applied to a carbon mass forming a Soderberg anode and to cell sidewalls.
    • 通过在其表面上处理碳体,特别是用于通过在熔融氟化物电解质中电解氧化铝来生产铝的电解槽的预烘烤阳极,以改善电池在空气运行期间的劣化的电阻,以及 通过用包含可沉淀的含硼化合物和添加剂的处理液对人体进行处理,所述添加剂的存在量使得与所述含硼化合物的沉淀基本上不分离的相是 固化后形成。 合适的氧化硼添加剂包括胶体氧化铝,二氧化硅,氧化钇,氧化铈,氧化钍,氧化锆,氧化镁,锂二氧化硅,磷酸铝,乙酸铈和它们的混合物。 同样的处理也可以应用于形成S + E,uml + EE derberg阳极和细胞侧壁的碳质量。