60%-88% Al2O3 calcined bauxite for sale gibbsite bauxite

Specifications

gibbsite bauxite
1. Custom size
2. 60%-88% Al2O3
3. Premium Customer Services
4. self-owned gibbsite bauxite

 60%-88% Al2O3 calcined bauxite for sale gibbsite bauxite

Gibbsite Bauxite

 

Introduction of gibbsite bauxite

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 can 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%.

 

Specifications of gibbsite bauxite

Grade	AL2O3	SIO2	FE2O3	TIO2	K2O+Na2O	CaO+MgO	Bulk density
HX75	75min	≤17	≤3.0	≤4.0	≤0.3	≤0.5	≥2.70
HX80	80min	≤12	≤3.0	≤4.0	≤0.3	≤0.5	≥2.80
HX85	85min	≤8	≤2	≤4.0	≤0.3	≤0.5	≥3.00
HX86	86min	≤7	≤2	≤4.0	≤0.3	≤0.5	≥3.10
HX87	87min	≤6	≤2	≤4.0	≤0.3	≤0.5	≥3.20
HX88	88min	≤5	≤1.8	≤4.0	≤0.25	≤0.5	≥3.25
HX90	90min	≤3	≤1.8	≤4.0	≤0.25	≤0.5	≥3.3
Moisture(max)					0.50%

 

Usage of gibbsite bauxite
1.Aluminium industry.

 2.Precision casting.

 3.Refractory industry.

 4.Silicic acid aluminium firefibre

 5.Mixed with magnesium oxide,it can be an nice bonding agent,especially for pouring entire steel teeming ladle lining

 6.Manufacture bauxite cement,grinding abrasives.ceracmic industry,and chemical industry for making aluminium compounds

 

 

 

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