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Calcined bauxite is one of the principal ore of aluminum.
Calcined bauxite contains hydrous aluminum oxides and aluminum hydroxides, formed through the laterization of aluminous rocks in tropical and subtropical areas.
calcined bauxite is obtained by calcining (heating)superior grade bauxite at high temperature (from 85OC to 1600C).
this removes moisture thereby increasing the alumina content.
compared to an alumina content of about 57%to 58%in raw bauxite, calcined bauxite has an alumina content of 84%to88%.
the heating is carried out in rotary kilns.
Specifications
calcined bauxite powde
1.low price higt quality
2.provide 1kg free sample
3.good after-self service
calcined bauxite shaft kiln
Other name: aluminous soilbauxite
1. rotary kiln calcined bauxite for refractory
2. Shaft Kiln Bauxite
3.Al2O3:50%-85%
4. density: 3.9-4g/cm3
1.Product specification
Aluminum content:48%-50%,50%-60%,60%-70%,70%-80%,80%-85%
level | Al2O3 | CaO | Fe2O3 | refractoriness | Bulk density |
special grade | >85 | <0.6 | <1.4 | >1790 | >3.6 |
Level 1 | >80 | <0.6 | <3.0 | >1790 | >3.0 |
Level 2 A | 70-80 | <0.8 | <3.0 | >1790 | >2.8 |
Level 2 B | 60-70 | <0.8 | <3.0 | >1770 | >2.65 |
Level 3 | 50-60 | <0.8 | <2.5 | >1770 | >2.55 |
Chemical Specification:
We are offering raw Bauxite Ore -high quality in different Grades as per following Spec.
Cement Cement grad Metal grade Metal Grade
Al2O3% 44-46 49-51 56-65
Fe2O3% 26 Max 5-7 Max 2 -3
SiO2% 10 Max 5 Max 1 - 3%Max
TiO2% 5Max 5 Max 1 - 3
CaO% 5 Max 1-3 Max 1 -2
LOI% 28-29 26-30 26-29
Size 10-300 MM or 100mesh or 200mesh or according to the buyers' need
Applications:
calcined bauxite is typically calssified according to its intended commercial application,such as abrasive ,cement ,chemical, metallurgical, and refractory .as raw material for use in high alumina and super duty refratory bricks and shapes ,plastics ,castable refratory, motors, gun mixes, ramming mixes, abrasive grains and other products
