Aluminum compounds are commonly used in various industries and applications due to their unique properties and characteristics. Here are some common aluminum compounds:

Alumina $Al2O3$: This is the most common form of aluminum compound, widely used in the production of ceramics, refractories, abrasives, and as a catalyst.Aluminum sulfate $Al2(SO4)3$: This compound is used in water treatment, paper manufacturing, and as a flocculating agent.Aluminum hydroxide $Al(OH)3$: This compound is used in antacids, as a flame retardant, and in the production of aluminum chemicals.Potassium aluminate $K3AlO3$: This compound is used in manufacturing glass, ceramics, and as a flocculating agent.Aluminum nitrate $Al(NO3)3$: This compound is used in the production of aluminum oxide, as a mordant in dyeing, and in the manufacturing of explosives.

These aluminum compounds have diverse industrial applications and play a significant role in various processes due to their unique properties and versatility.