Calcined Bauxite

Calcined bauxite (aluminium oxide) is produced from Refractory Agglomerated Super Calcined (RASC) bauxite. The main constituent is the mineral corundum. Calcined bauxite can be characterised by:

 

• High Mohs hardness of 8.5
• High inertness in various media.

 

Basic properties

Property	Value	Unit
Moisture	0.1	[%]
Hardness (Mohs)	8.5	[-]
Colour	dark grey	[-]
Density	3.8	[kg/ dm3]

 

 

Product overview

Product	Grade	D50 [µm]	D97 [µm]	OA [g/ 100 g]
Portalum	A25	10	41	13

Production location Portalum

 

Application

Calcined bauxite will provide:

 

• Excellent abrasion resistance: due to its hardness of 8.5 on Mohs scale, calcined bauxite will increase the coating’s resistance to wear.
• Chemical resistance: due to its inert nature, calcined bauxite will provide good chemical resistance compared to conventional fillers.