Bauxite, calcined

Composition

Al₂O₃, calcined gibbsite and diaspore

Portalum^®

Properties

• high melting point
• high hardness
• high strength
• high density
• low porosity
• has the same properties as synthetic corundum

Applications

Construction: to increase the compression strength of concrete

Metallurgy: covering (transport) runners for molten iron

For information about the paint and polymer applications visit Sibelco Specialty Minerals Europe.