At Prism Metals we offer value added products like calcined bauxite of high grade to cater to needs of its discerning customers who are also quality demanding.

Calcined Bauxite is obtained by calcining (heating) superior grade Bauxite at high temperature (from 850˚C to 1600˚C). This removes moisture and therefore increases the alumina content. Compared to an alumina content of about 47% to 49% in raw Bauxite, calcined bauxite has an alumina content of about 80% to 87%. The heating is carried out in rotary kilns/Shaft kilns. Calcinations is done at different temperatures ranging from 580 to 1600 degrees depending upon their necessity. Calcined Bauxite is mainly used for refractories and abrasives. The products is offered to clients in the foreign market. Tie – up with best calcined bauxite plants to produce value added bauxite products.

We offer Calcined Bauxite for refractory, abrasive, welding, fluxes and anti skid applications. Typical specification of the product being supplied are as under:

Chemical Composition%
Elements 80% 84% 87%
SI2O3 (max) 8 4.5 8
FE2O3 (max) 3.5 2.2 – 2.5 3.0
Bulk Density 2.8 2.9 3.0
CaO (max) 4.0 4.0 0.3
TIO2 6.0 5.0 4.0
Moisture 0.5 0.5 0.2
Mgo     0.3
 
SIZES
Granules   0-1 mm 1-3 mm 3-5mm
Powder Size (mm) Min Max
0.355 - 0
0.150 0 20
0.075 5 45
0.045 20 60
 

Note : MOQ conditions shall apply.