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引言目前世界炼铝用的氟化铝有两种生产方法:湿法和干法。干法系使氟化氢气体与氢氧化铝在流化床中反应,直接得到无水氟化铝;湿法合成的是带结晶水的氟化铝(三水氟化铝—AlF_3·3H_2O),要经过脱除结晶水的过程,才能获得供电解使用的产品。由于干法具有较大的优越性,世界约有75％的氟化铝是用干法生产的。然而在我国,目前尚只有湿法生产
Introduction Aluminum fluoride currently used in aluminum production in the world has two production methods: wet and dry. Dry system to hydrogen fluoride gas and aluminum hydroxide in the fluidized bed reaction, direct access to anhydrous aluminum fluoride; wet synthesis of aluminum fluoride with water of crystallization (aluminum fluoride trihydrate - AlF 3 · 3H 2 O), to After the process of removing water of crystallization, the product for electrolysis can be obtained. About 75% of the world’s aluminum fluoride is produced by dry process because of its superiority in dry process. However, in our country, there is only wet production