You are here: Home » Products » CALCINED BAUXITE » Rotary Calcined Bauxite » 87% Al2O3 Calcined Bauxite Powder

Product Details

87% Al2O3 Calcined Bauxite Powder

Calcined bauxite is considered as one of the major ore of aluminum. Offered calcined bauxite powder is formed by calcining (heating) top grade bauxite at excessive temperature which ranges between 85OC to 1600C.As moisture gets eliminated therefore, it increases the alumina content. Further, calcined bauxite consists of 84% to 88% of alumina, as equated to 57% to 58% in raw bauxite. The entire operation is executed with help of rotary kilns.
sharethis sharing button
  • 200mesh


  • 25083000


Calcined bauxite is one of the principal ore of aluminum. Rotary kiln calcined bauxite is obtained by calcining superior grade bauxite at high temperature (from 850℃ to 1600℃) in the rotary kiln. 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% to 88%.

Besides, through calcination, the density and refractory resistance will also be improved to varying degrees. The grade of bauxite can be increased greatly.

The calcined bauxite can be processed into bauxite sand and bauxite powder of different particle sizes, both of which can be directly used as refractory sand. It has a very high status in the field of refractory materials.

Chemicals Composition & Physical Property

Chemical Analysis%Physical Data
Al2O375-88ShapeAngular or Powder
SiO26-18Specific Gravity (g/cm3)3.70
Fe2O30.5-2.5Bulk Density (g/cm3)2.90-3.25
P2O50-0.3Moisture Content0.1-0.3
MgO0-0.2Polished Stone Value70Min
CaO0-0.4Aggregate Abrasive Value10Max


Main Application

1. High grade calcined bauxite is one of the main raw materials in the flux industry.

Flux grade bauxite powder is mainly selected after calcination corresponding content of granular bauxite grinding screening, removal of impurities, the formation of the corresponding content and particle size requirements of fine powder. The flux made of calcined bauxite powder has the characteristics of long life and not easy to age.

2. Bauxite powder can be processed into molds for precision casting. In addition, it can also be used as refractory castable and refractory cement raw materials. Aluminum silicate refractory fiber, with light weight, high temperature resistance, good stability and other advantages, can be used for fireproof clothing, firebrick, etc.

Contact us for the offer now ⬇️

Company Information

Founded in 2015 in China, SEPPE is the world's leading manufacturer of Aluminum Oxide materials in severe conditions - including sintered bauxite proppants, fused alumina, and bauxite materials - used in Ceramics & Refractories,Oil & Gas fracturing, Casting & Foundry, Blasting & Polishing, Abrasives & Grinding, more than hundreds of application worldwide. It's seamless global distribution network ensures smooth delivery of materials from SEPPE plants to all around the world.

Trade & Market


                                  Main Markets                           Total Revenue(%)
                                 North America                                40.00%
                               Domestic Market                                21.00%
                                   Mid East                                10.00%
                               Southeast Asia                                10.00%
                                     Africa                                 9.00%
                                 Eastern Asia                                 5.00%
                                  South Asia                                 3.00%
                               South America                                 2.00%