How Is Sodium Aluminate Obtained in Solution

Sodium aluminate is an important inorganic chemical commodity. It is an efficient raw material for producing aluminum hydroxide and is widely used in industry and science and technology. Pure sodium aluminate (anhydrous) is a white crystal in various molecular forms.
Sodium aluminate is obtained by dissolving aluminum hydroxide in caustic soda solution. Trivalent aluminum hydroxide (gibbsite) can be dissolved in caustic soda solution containing 20-25% water at a temperature close to the boiling point. Using a higher concentration of caustic soda solution can produce a semi-solid product. The reaction process should be carried out in a nickel or steel vessel heated by steam. At the same time, aluminum hydroxide should be boiled with 50% caustic soda at the same time until a pulpy substance is produced. The final The mixture was poured into a tank to cool.