Chemical definition of the product

Alumina is waterless alumininum dioxide of crystalic structure obtained by processing the bauxite ore following Bayer's process.

Types and kinds of the product

"Birač" produces low calcinated metallurgical alumina of SANDY type. Production of several more alumina types with a low water content and high a crystal phase content is planned for metallurgical purposes.

Application

The main alumina application is aluminium production.

Physically-chemical characteristics

Al2O3	(%)	min. 98,7
Na2O total	(%)	max. 0,5
SiO2	(%)	max. 0,020
Fe2O3	(%)	max. 0,030
CaO	(%)	max. 0,030
Ignition loss (1100 °C)	(%)	max. 1,0
Fraction - 45 mikrona	(%)	max. 20
Bulk density	(kg/m3)	950 - 1050

Safety measures

Alumina is powdery material, whitish, scentless and tasteless, it is neither toxic nor flammable. Common measures for handling the powdery materials are used.

Packing
Alumina is packed and transported in car and railway cisterns - containers for the powdery and grainy materials or jumbo bags weighted to 1000 kg.