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High Alumina Bauxite also called bauxite aggregate,its composition is very complex,and the general term of Hydrous Alumina Ore with different geological origin. Such as boehmite, diaspore and gibbsite (Al2O3 - 3H2O); some are diaspore and kaolinite (2SiO2 Al2O3 2H2O) Company; some kaolinite, and with the increase of the content of kaolinite, which is generally the bauxite or kaolinite clay. Bauxite is usually formed by chemical weathering or exogenic action. There are few pure minerals and always contain some foreign minerals, which contain more or less clay minerals, iron minerals, titanium minerals and detrital heavy minerals.
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 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 90%.the heating is carried out in rotary kilns.
Calcined Bauxite Application:
1. Aluminium metallurgy
2. Precision casting / Investment casting:
bauxite grog fines can be made into mold for precision casting.
3. Refractory: high alumina bauxite's refractoriness can reach 1780°C.
It is charactered by good chemical stability and mechanical performance. (Al2O3 ≥48% with low Fe2O3)
4. Aluminium silicate refractory fiber: The high alumina bauxite grog can melt under 2000°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.
5. Mixing magnesia and bauxite grog with binders to pour the molten steel ladle for better overall lining
performance.
6. Producing bauxite cement
7. Abrasives
8. Ceramics industry
9. Chemistry industry for all kinds of aluminium compound.
Grade | Al2O3 | Fe2O3 | TiO2 | Bulk Density (g/cm3) | Water Absorption (%) |
I | ≥87.5 | ≤1.5 | ≤4.0 | ≥3.45 | ≤0.2 |
II | ≥86.0 | ≤1.8 | ≤4.0 | ≥3.40 | ≤0.3 |
III | ≥85.0 | ≤1.8 | ≤4.0 | ≥3.35 | ≤0.3 |
IV | ≥83.0 | ≤1.8 | ≤4.0 | ≥3.30 | ≤0.3 |
V | ≥80.0 | ≤1.8 | ≤4.0 | ≥3.25 | ≤0.3 |
What is the technical data of TONTEN rotary kiln bauxite?
1. Aluminium metallurgy.
2. Precision casting / Investment casting: rotary kiln bauxite grog fines can be made into mold for precision casting.
3. Refractory: refractoriness of high quality rotary kiln bauxite can reach 1780°C with good chemical stability and mechanical performance.
4. Aluminium silicate refractory fiber: high quality rotary kiln bauxite can melt in electric arc furnace, producing aluminium silicate refractory fiber, which can be made into ceramic fiber blanket, plate,cloth etc.
5. Mixing magnesia and rotary kiln bauxite grog with binders to pour the molten steel ladle for better overall lining.
6. Producing rotary kiln bauxite cement.
7. Abrasives grade rotary kiln bauxite.
8. Ceramics industry.
9. Chemistry industry for all kinds of aluminium compound.
Packing and Shipping:
Packaging information of our abrasive TONTEN rotary kiln bauxite :
- 25kg /bag, 40 bags packed in a 1000kg bulk bag.
- 25kg /bag, 40 bags on a 1000kg pallet.
- 1000kg /jumbo bag.
- Customized packing availble.
FAQ:
Q: Are you trading company or manufacturer ?
A: We are factory.So you do not have to worry about quality and price, we can guarantee the best quality and the most reasonable price
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:
Mobile/0086-15713811776
