First of all, the higher the ratio of sodium to aluminum in high-quality cryolite, the better, the higher the molecular ratio, the higher the current efficiency of electrolytic aluminum smelting, the less the loss of fluorine, and the less environmental pollution. Moreover, polymer cryolite is more suitable for other occupations except aluminum industry.

Secondly, the content of impurities such as silicon oxide, iron oxide and phosphorus pentoxide in cryolite is low. The existence of these impurities directly affects the quality of aluminum ingot and the current efficiency of aluminum smelting.

Third, the lower the water content of high-quality cryolite, the better. The existence of water will increase the consumption of cryolite.

Cryolite is mainly used as flux in aluminum electrolysis; It is also used as a wear-resistant additive for grinding products, which can effectively improve the wear resistance, cutting and cutting force of grinding wheel, and extend the service life and storage time of grinding wheel.