Sodium hexafluoroaluminate (Na₃AlF₆), also known as sodium fluoroaluminate, is an inorganic compound. It usually exists in a colorless or white solid form with good thermal and chemical stability. Sodium hexafluoroaluminate has important applications in industry, especially in the smelting and refining process of aluminum.

Here are some of the main uses of sodium hexafluoroaluminate:

1. Electrolytic production of aluminum: Sodium hexafluoroaluminate is the main component of the electrolyte and is used to extract aluminum from bauxite. The high boiling point and good conductivity of this compound make it ideal for electrolysis processes.

2. Ceramics and glass industry: Sodium hexafluoroaluminate is also used in the production of ceramics and glass as a flux and clarifier to help lower the melting point and improve the transparency of the product.

3. Welding materials: During the welding process, sodium hexafluoroaluminate can be used as an additive to improve the properties of welding metals.

4. Catalyst Carrier: In some chemical reactions, sodium hexafluoroaluminate can be used as a catalyst or catalyst carrier.

5. Other applications: It is also used as an abrasive, a stabilizer for resins, an additive for steelmaking and metal casting, etc.