Calcined Bauxite with High Purity of Al2O3 (Al2O3 min:85%)

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China main port
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TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
20000 m.t./month

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Product Description:

85 calcined bauxite   

 


Item


Calcined Bauxite High Purity of Al2O3
 
Product Description 
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%to88%.the heating is carried out in rotary kilns.
 

Size 
 

0-1mm,1-3mm,3-5mm,200mesh,325mesh,or as buyer's request.
 
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.( low Fe2O3)
4.Aluminium silicate refractory fiber: The high alumina bauxite grog can melt under2000°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.
 
Chemical Composition GradeAL2O3FE2O3TIO2K2O+Na2OCaO+MgOBulk density7068min≤2.0≤4.0≤0.6≤0.6≥2.757573min≤2.0≤4.0≤0.6≤0.6≥2.758080min≤2.0≤4.0≤0.5≤0.5≥3.258585min≤2.0≤4.0≤0.4≤0.4≥3.0088 87.5min≤1.6≤4.0≤0.4≤0.4≥3.20
 
Our Service
1.We can offer you the customer size services.
2.We can offer you the best quanlity and price.
3.We can offer you the related test report,both at factory and the third party.
4.Packaging: 25KG per bag or as client's requirement.
5.We have sufficient manufacturing capability to delivery the goods safely and in time.
 
Our Advantage
1.24 Years experience of Calcined Bauxite manufacturing and exporting.
2.Our factory is equited with advanced machine,automatic production line, we are in a good position to produce customers size product in large scale with low cost. thus,provide low priced goods.
3.Self-owed mine fo production capacity over 5000MT per month.
4.Professional export team and skilled workers, we are in a good position to serve our customers to the best of our ability.
5.Strictly quality contol at our factory and third party quality inspection before shipment.
6.Cargoes together with container sales service available.
7.Full experience of large numbers containers loading in Chinese sea port.
8.Packing with pallet as buyer's special request.
9.Fast shipment by reputed shipping line.
10.Cargoes photo before and after loading into container.
11.Professional service team keep customers informed from  delivery to  discharge.
 

Calcined Bauxite with High Purity of Al2O3 (Al2O3 min:85%)

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Q:What kind of refractory bricks material is best?
Domestic experimental electric furnace body is made up of hearth, insulating layer and shell. Sic and high-alumina material are often used in traditional electric furnace under 1300℃ traditional furnace, while corundum material is used in 1600℃. Laboratory furnace of Occident usually uses ceramic fiber tank which is characterized by rapid temperature raising, good accuracy, light weight and small volume. In recent years, domestic Hangzhou blue sky Instrument and Shanghai laboratory equipment all have been produced by experimental furnace with ceramic fiber tank.
Q:Does anyone know about the classification standards of B2-level fireproof and thermal insulation materials?
1.The insulation materials with A-level combustion performance: EPS Hairong module, rock wool, glass wool, foam glass, ceramic foam, foam cement, closed-cell perlite, etc. 2. The insulation materials with B1-level combustion performance: specially-treated extruded polystyrene boards(XPS)/ specially-treated Polyurethane(PU), Phenolics, Polystyrene rubber powder particles,etc. 3. The insulation materials with B2-level combustion performance: Expanded polystyrene sheets(EPS), Extruded polystyrene boards(XPS), Polyurethane(PU), Polyethylene(PE), etc. See the 2009 measures of building technology. The A-level insulation material is only fireproof, the insulation performance of it is worse than that of organic XPS \\\\ EPS material. Currently I think that the best insulation material should be Hairong EPS module, it not only achieves the requirement of insulation but also fulfills the goal of fireproofing, and the comprehensive unit price of it is not expensive. The insulation materials in the domestic market have their own disadvantages, you'd better take the building demands into consideration, and use the materials that are within the acceptable range.
Q:What are some of the new refractories and what are their characteristics?
Refractory common AZS refractories are often used brick, corundum brick, magnesia chrome brick, silicon carbide, silicon nitride bonded silicon carbide, nitrides, silicides, sulfide, boride, carbide and other non oxide refractory materials; calcium oxide, chromium oxide, aluminum oxide, beryllium oxide and other refractory materials, Magnesium Oxide
Q:What's the fire resistance rating of the exterior fire retardant coating?
First of all, fire retardant coating has no class distinctions. Buildings fire resistance rating is generally classified as follows: I grade fire resistance, II grade fire resistance, III grade fire resistance, IIII grade fire resistance. Buildings with I grade and II grade fire resistance are much common. According to the coating thickness, exterior fire-resistant coating for steel structure can be classified as follows: 1. Exterior thin fire-resistant coating for steel structure, 2. Exterior ultra-thin fire-resistant coating for steel structure, 3. Exterior thick fire-resistant coating for steel structure.
Q:What are grade classifications of the external walls for fireproofing?
The basic level can be divided into: A1, A2, B1, B2, B3 and other levels. There are many technical indicators to make specific division, but I partly cannot report for a while, because it is very professional and technical. Please contact Qingdao Shanfang Instrument Co., LTD for details, they specialized in the external wall thermal insulation materials fire rating testers.
Q:Is the ball mill used in production of refractories?
It depends on what refractory you produce.
Q:what's the fireproof levels of fireproof and thermal inuslation matertial?
1, organic materials: B level material is flammable, B1 level material is flame retardant. 2, inorganic materials: Grade A flame-resistant materials are divided into three classes and two kinds of materials.
Q:Does anyone know about the fire resistance period of thin fireproof coatings?
Outdoor thin steelwork fireproof coatings have a fire resistance of 2.0 hours, the thickness of coatings is between 4.5 to 5 mm, the standard amount is 5.5 to 6kg per square meter. Specific situations vary according to the thickness data provided by manufacturers . The fireproof coatings are applicable for the surface of combustible substrates, which can reduce the flammability of the surface being painted, and block the rapid spread of fire. They can be used to improve the fire resistance of the materials being painted. The fireproof coatings are coated on the substrate surfaces. They are also rustproof, waterproof, wearproof, heatproof and anticorrosive apart from flame retardant. They have good tenacity, stainability, adhesiveness, glossiness and fast-drying nature.
Q:Does anyone know which materials belong to light fire resistant material?
Fire partitions can be divided into organic and inorganic fire partitions, the main ingredient of organic fire partitions is organic material, which can be used for cable tray with corrosion-resistant and fire protection requirements, and the main ingredient of inorganic fire partitions is inorganic material, mainly used for fire protection. As the main component is inorganic material, it can not be use in projects with acid-resistant and alkali-resistant requirements. Of course, the price of the same amount of organic fire partitions is generally more expensive than that of the inorganic fire partitions . The fire endurance of these two products of general enterprises are 3 hours.
Q:Is fireclay corrosive?
No. All of the refractory materials have stable chemical properties and their usability can be guaranteed under high temperatures.

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