cryolite

Cryolite is a naturally occurring mineral composed primarily of sodium, aluminum, and fluoride. It appears as a white or translucent crystalline substance and has historically been used as a flux in aluminum production, helping to lower the melting point of raw materials and improve the efficiency of the process. Cryolite’s unique chemical properties make it valuable in metallurgy, particularly in the Bayer process for refining bauxite into aluminum. Although rare in nature, synthetic cryolite is now commonly produced for industrial use. Its ability to withstand high temperatures and its chemical stability are key qualities that contribute to its role in aluminum manufacturing.