Why its necessary to use mixture of alumina and cryoliterather than just alumina?

Using a mixture of alumina and cryolite is essential in the aluminum smelting process because cryolite lowers the melting point of alumina, making the electrolysis more efficient. This combination enhances conductivity and reduces energy consumption during aluminum production. Additionally, cryolite helps to stabilize the molten bath, improving the overall yield and quality of the metal produced. Without cryolite, the process would require higher temperatures and result in increased operational costs.