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80%min Al2O3 High-Alumina Calcined Bauxite Powder Refractory Raw Material

Calcined bauxite is obtained by calcining (heating) superior grade bauxite at high temperature (from 85O℃ to 1600℃). This removes moisture thereby increasing the alumina content.
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  • 200 325 Mesh

  • SEPPE BAUXITE

  • 25083000

Introduction

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 85O℃ to 1600℃). 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%.

Chemicals Composition & Physical Property

 

Grade Al2O3 Fe2O3 TiO2     Bulk Density (g/cm3)      Water Absorption (%)
I 87.5Min 1.5Min 4.0Max             3.45Min                0.2Max
II 86.0Min 1.8Min 4.0Max             3.40Min                0.3Max
III 85.0Min 1.8Min 4.0Max             3.35Min                0.3Max
IV 83.0Min 1.8Min 4.0Max             3.30Min                0.3Max
V 80.0Min 1.8Min 4.0Max             3.25Min

               0.3Max

 

 


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Download: CALCINED BAUXITE COA.pdf

 

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