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采用单分子比冰晶石代替氟化铝调整电解铝熔盐的分子比,可大大减少氟化铝的挥发损失,降低消耗,并有益于减少合氟有害气体,维护厂区环境卫生。过去,单分子比冰晶石的制取及其鑑定方法,还没见有报道。因而,人们曾怀疑单分子比冰晶石的存在。我们采用氟氢酸溶液萃取等方法,对所制成的单分子比冰晶石作了反复检查鑑定,证实能够人工合成。同时对其结晶水也作了脱水试验,认为可脱到比氟化铝低2～3％,用于电解铝可减少水解损失。但其
The use of monomolecular cryolite instead of aluminum fluoride to adjust the molecular ratio of electrolytic aluminum molten salt can greatly reduce the volatilization loss of aluminum fluoride and reduce consumption, and is beneficial to reduce the combined fluorine harmful gas and maintain the environmental hygiene of the factory. In the past, the preparation of cryo-cryolite and its identification methods have not been reported yet. Thus, people have doubts the existence of single molecules than cryolite. We use hydrofluoric acid solution extraction and other methods, made of single molecular cryolite made repeated inspection identification, confirmed that artificial synthesis. At the same time its crystallization of water also made a dehydration test that can be detached to 2 to 3% lower than the aluminum fluoride, for electrolytic aluminum can reduce the hydrolysis loss. But it