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发明公开
CN101671835A 铝电解的低温熔盐体系及使用该熔盐体系进行铝电解的方法 无效 - 驳回

铝电解的低温熔盐体系及使用该熔盐体系进行铝电解的方法
摘要：
本发明涉及有色金属冶金熔盐电解领域，提供了一种可应用于铝电解工业的新熔盐电解质体系。该熔盐作为铝电解的电解质体系，可以大大降低电解温度，该电解质体系在电解过程中还表现出对Al 2 O 3 有良好的溶解性能。新熔盐电解质体系选用KF、KCl、NaF、NaCl、AlF 3 、MgF 2 、CaF 2 、LiF、BaF 2 、Al 2 O 3 等盐的三元或多元构成。该电解质体系具有较低的初晶温度，且对Al 2 O 3 具有良好的溶解性能。解决了钠冰晶石体系中通过降低NaF/AlF 3 比来降低电解质初晶温度带来的Al 2 O 3 溶解度低、溶解速度慢的问题。另外，该低温电解质体系中特别适合采用金属陶瓷或金属合金惰性阳极。
摘要（英）：

The invention relates to the field of molten salt electrolysis of nonferrous metal metallurgy and provides a novel molten salt electrolyte system which can be applied to the aluminum electrolysis industry. The molten salt as an electrolyte system of aluminum electrolysis can greatly reduce the electrolysis temperature, and the electrolyte system also presents a favorable dissolving performance onAl2O3 in the process of electrolysis. The novel molten salt electrolyte system comprises ternary or multivariant salt, such as KF, KCl, NaF, NaCl, AlF3, MgF2, CaF2, LiF, BaF2, Al2O3, and the like. Theelectrolyte system has a lower primary crystal temperature and the favorable dissolving performance on the Al2O3. The problems of low Al2O3 solubility and low dissolving speed brought by reducing theelectrolyte primary crystal temperature through reducing the NaF/AlF3 ratio in a sodium cryolite system are solved. In addition, the low-temperature electrolyte system is particularly suitable for adopting an inert anode of metal ceramics or metal alloy.

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