The difference between high polymer cryolite and low molecular cryolite.

Cryolite is one of the main types of fluoride used in electrolytic aluminum, and it is different from that of sodium fluoride and aluminum fluoride.
It can be divided into polymer than cryolite and lower molecular than cryolite.
Because of the use of alumina material, the electrolytic aluminum has better environmental protection and economic benefits than cryolite.
As a result, the developed countries of foreign aluminum industry have generally used high polymer than cryolite.
The cryolite used in China's aluminum industry is sulfuric acid - fluorite low molecular ratio cryolite.
Macromolecules can be produced from a variety of fluorine-containing raw materials.
The United States and Japan, developed in the aluminum industry, use sodium fluorosilicate raw materials to produce high polymer than cryolite and have industrialized production.

Since the 1960s, China has made several researches on the development and research of the high polymer ratio cryolite, which has not been produced yet.