Loading Port:Tianjin
Payment Terms:TT OR LC
Min Order Qty:1 m.t.
Supply Capability:10000000 m.t./month
1.Structure of Calcined Bauxite Description
Bauxite (aluminous soil; Bauxite) is also called the alumina or bauxite, main ingredients are alumina, hydrated alumina containing impurities, is an earthy mineral. White or gray, brown and yellow or light red by iron. From 4 to 3.9 g/cm3 density, hardness, 1 ~ 3 is not transparent, very brittle. Very difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. Mainly used for aluminium, refractory material.
2.Main Features of the Calcined 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 removes moisture there. By 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.
3. Calcined Bauxite Images
4. Calcined Bauxite Specification
items | Chemical composition % | Water absorption % | Bulkdensity g/cm3 | |||
Al2O3 | Fe2O3 | CaO+MgO | R2O | |||
Special grade ONE | ≥85 | ≤1.8 | ≤0.4 | ≤0.4 | ≤3 | ≥3.10 |
Special grade TWO | ≥80 | ≤2.0 | ≤0.5 | ≤0.5 | ≤5 | ≥2.90 |
Grade ONE | 70-80 | ≤2.0 | ≤0.6 | ≤0.6 | ≤5 | ≥2.75 |
Grade TWO | 60-70 | ≤2.0 | ≤0.6 | ≤0.6 | ≤6 | ≥2.65 |
particle size
name | Particle size | limit |
High alumina bauxite | 10~5mm | >10,<5 less than 10% |
High alumina bauxite | 5~3mm | >5,<3 less than 10% |
High alumina bauxite | 3~1mm | >3,<1 less than 10% |
High alumina bauxite | 1~0mm | <1 less than 10% |
High alumina fine dust | 0.08mm | Screen residue less than 10% |
High alumina fine dust | 0.045mm | Screen residue less than 10% |
5.FAQ of Calcined Bauxite
1). Q: Are you a factory or trading company?
A: We are a factory.
2). Q: Where is your factory located? How can I visit there?
A: Our factory is located in ShanXi, HeNan, China. You are warmly welcomed to visit us!
3). Q: How can I get some samples?
A: Please connect me for samples
4). Q: Can the price be cheaper?
A: Of course, you will be offered a good discount for big amount.
