What are the main uses of cryolite?

Cryolite belongs to the white monoclinic crystal system and is slightly soluble in water. Molten cryolite can dissolve alumina. Cryolite is commonly used as a flux in the electrolytic aluminum industry. With it, opalescent glass can be produced, which is also an opacifier for tooth enamel.

Cryolite Uses:

Cryolite can be used as a co-solvent in aluminum electrolysis and as an anti-wear additive in grinding products. The grinding force and cutting force of the abrasive tools added with cryolite are significantly improved, and the service life and storage time are also shortened. expand. Cryolite can be used as a solvent in iron alloys, boiling steel, non-ferrous metals, a deoxidizer in casting, a catalyst in olefin polymerization, an anti-reflective coating, an emulsifier in glass, and an emulsifier in enamel. In addition, cryolite is also an opalescent agent for glass, a flux for welding materials, and a filler for ceramics.

main purpose:

Cryolite produced in nature is very rare, and most of the cryolite used in industry is produced artificially. Cryolite is used as a co-solvent, additive, deoxidizer, catalyst, emulsifier and filler in the fields of aluminum electrolysis, grinding products, ferroalloys, non-ferrous metals, enamel, glass and ceramics.

Industrial quality requirements:

The field with the most cryolite content is still the aluminum industry. As a flux for electrolytic aluminum smelting, cryolite has strict requirements on sodium-aluminum molecular ratio, impurity content and water content.

First of all, the higher the ratio of sodium to aluminum in cryolite, the higher the current efficiency of electrolytic aluminum smelting, which can reduce the loss of fluorine and reduce environmental pollution. High molecular ratio cryolite is also suitable for aluminum removal industry used in other industries.

Secondly, the content of impurities such as silicon oxide, iron oxide, and phosphorus pentoxide in cryolite must be strictly controlled, because these impurities will affect the quality of aluminum ingots and the current efficiency of aluminum smelting.

Finally, control the water content of the cryolite, the lower the better, because the presence of water will increase the consumption of cryolite.