Calcined Bauxite

Calcined Bauxite Introduction

Calcined Bauxite manufacturers produce Calcined Bauxite by firing (heating) the superior grade Bauxite at high temperature (from 850℃ 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 75 % to 90 %. The heating is carried out in rotary kilns. Calcination is done at different temperatures ranging from 850 ℃to 1600 ℃ depending upon the customer’s application.

 

Calcined Bauxite Specifications

Brand

Main chemical composition,%

Density ,(g/cm3)

water absorption,%

Al2O3

Fe2O3

TiO2

CaO+MgO

K2O+Na2O

GLA-90

≥90

≤1.4

≤4.0

≤0.4

≤0.4

≥3.3

≤3

GLA-88

≥88

≤1.5

≤4.0

≤0.4

≤0.4

≥3.25

≤4

GLA-85

≥85

≤1.8

≤4.0

≤0.4

≤0.4

≥3.1

≤4

GLA-80

≥80

≤2.0

≤4.0

≤0.5

≤0.5

≥2.8

≤5

GLA-75

≥75

≤2.0

≤4.0

≤0.5

≤0.5

≥2.7

≤7

Calcined Bauxite Applications

  bauxite grog fines can be made into mold for precision casting.

  1. ’s refractoriness can reach 1780°C.

  It is charactered by good chemical stability and mechanical performance. (Al2O3 ≥48% with low Fe2O3)

  1. °C-2200°C     in the electric arc furnace.After a series of processing, it can become aluminium silicate refractory fiber,

 which can be made into fiber blanket, plate,cloth.

We are an excellent cement supplier,We have excellent csa china for sale,please feel free to contact us.

 

 




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