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掌握往电解质中添加锂以强化熔融冰晶石氧化铝电解过程的方法,是世界铝工业的巨大成就。这既能改善电解质的物理化学性质,又能保证提高槽系列的生产效率,降低单位能耗,减少氟化盐和阳极糊的单耗,而且也能改善电解生产的劳动卫生条件和减少生产厂房附近的污染。曾有人提出过采用碳酸盐、氟化物、氢氧化物、铝酸盐、氟化铝酸盐等作为锂添加剂,并用上述各种锂化合物进行了试验。与此同时,国外在工业上主要是使用碳酸锂。这是因为碳酸锂的成本较低。
It is a tremendous achievement of the world aluminum industry to master the method of adding lithium to the electrolyte to enhance the electrolytic process of molten cryolite alumina. This not only improves the physicochemical properties of the electrolyte, but also ensures that the production efficiency of the tank series is increased, the unit energy consumption is reduced, the unit consumption of the fluoride salt and the anode paste is reduced, the sanitary conditions for electrolysis and the reduction of the production plant Near the pollution. It has been proposed that carbonates, fluorides, hydroxides, aluminates, aluminum fluoride salts and the like have been proposed as lithium additives and the above-mentioned various lithium compounds were tested. At the same time, foreign countries mainly use lithium carbonate in industry. This is because lithium carbonate is less costly.