Al2O3 85% Rotary Kiln Calcined Bauxite for Refractory Castables

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China main port
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
5000 m.t./month

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Product Description:

Al2O3 85% Rotary Kiln Calcined Bauxite for Refractory Castables

Specifications&Data

What is the details of our steel fiber reinforced refractory castable?

Steel fiber reinforced refractory castable is a special castable which is added steel fiber into the castable,can improve the toughness,mechanical strength,thermal shock resistance and spalling resistance.

What is the Feature of Our steel fiber reinforced refractory castable?

1.High mechanical strength,

2.Good thermal shock resistance,

3.Good toughness and anti-stripping,

4.High refractoriness,

5.Tiny linear variation,no cracking,

6.Resistant to scour and erosion,

7.Good volume stability under high temperature.

What is the Applications of our steel fiber reinforced refractory castable?

Steel fiber reinforced refractory castable is mainly used in heat treatment furnace,heating furnace,soaking pit furnace,tundish slag dam weir,seconclary refining and the catalytic cracking unit etc key part of kiln furnace and thermal equipment.

What is the Technique Data of our steel fiber reinforced refractory castable?

Item

Fire clay

High alumina

Corundum

Chemical Composition %

Al2O3 ≥

45

75

90

CaO ≤

1.0

1.0

1.0

 

Bulk density g/cm3

110°C,24h

2.40

2.70

3.15

1350°C,3h

2.35

-

-

1500°C,3h

-

2.65

3.10(1550°C)

Reheating linearchange %

1350°C,3h

±0.5

-

-

1500°C,3h

-

±0.5

±0.5(1550°C)

 

Bending Strength MPa

110°C,24h

6

7

7

1350°C,3h

8

-

-

1500°C,3h

-

10

10(1550°C)

 

Compressive strength MPa

110°C,24h

40

40

40

1350°C,3h

75

-

-

1500°C,3h

-

85

90(1550°C)

Service temperature °C ≥

1500

1550

1650

Al2O3 85% Rotary Kiln Calcined Bauxite for Refractory Castables

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Q:What level is the rock wool board fireproofing material ?
The most important feature of the rock wool board is fireproofing, which is a non-combustible material and absolute A-level! It has the specialized external wall rock wool board, which can be found online.
Q:What's the fire resistance rating of the exterior fire retardant coating?
Exterior thick fire-resistant coating for steel structure can reach the first level of fire resistance, thin fire-resistant coating for steel structure can be fire-resistant for three hours, and ultra-thin fire-resistant coating for steel structure can just be within the second level of fire resistance.
Q:What's the heat conductivity coefficient of fire-resistant material?
There are many types of fire-resistant materials woth different thermal conductivity. The question should be more specific.
Q:What are the specific steps of stirring the steel ladle castable?
Steps are as follows. 1 Compulsory mixer is used to stir the castable and bags, rope and other debris can not mix in the castable when stirred. 2, Castable should be unpacked on the scene. Stirred volume depends on the capacity of the mixer. Castable should be accurately measured and put into a blender. 3 The process of first dry mixing and then wet mixing is adopted. After the castable is added to the mixer, it is dryly mixed for 2 minutes, add about 5.2 to 5.5 percent of water and continue to add water while stirring. Water that is 80% of the total should be added, and then decide whether to continue to add or not depending on the consistence (noting that the water must be clean water and sewage can not be used). Then it is wetly mixed for 4 minutes and stirred for not less than 6 minutes at one time, until castable is even. In general, the bottom is slightly dry and the wall of the ladle is slightly dilute (the amount of water is only for reference). 4, The amount of water and mixing time should be controlled strictly when stirred to ensure that the needs of the consistency are met. If castable is too thin, it will seriously affect the quality of the material. The stirred volume, stirring time and water that is added should be consistent and they can not suddenly be thick or suddenly be thin. If the consistency does not meet the requirements, the castable should be put back to the mixer and stirred with appropriate water or dry materials. 5, It should be stirred evenly and casting should finish in 20 minutes, in order to avoid sclerosis, affecting structural strength of ladle lining 6, After each completion of construction, varieties of castable should be changed and the mixer should be cleaned 7, Stirring can stop in halfway. If the mixer breaks down and it can be repaired in a short time, some of the materials have to be removed before the machine is opened. If the machine can be repaired on time, castable refractory should all be removed.
Q:What kind of materials can be tested their electrical resistivity in the current refractory industry?
Graphite, Magnesium Oxide, and alumina are all feasible.
Q:What dose the fireproof and thermal insulation material include?
It includes A1: Non-combustible inorganic monomer; A2 Non-flammable organic compound, namely composite material; A3 Modified phenolic fireproof materials.
Q:Which industry does the metallurgy and thermal insulating and refractory material belong to?
Building Materials
Q:Does anyone know what is a lightweight refractory material?
Heat preservation and insulation layer used only for Thermal Equipment has poor wear resistance, loose organization and high porosity(40%~85%) . The definition of light refractory material: low thermal conductivity, good performance in thermal insulation , weak mechanical strength, low volume density(generally below 13).
Q:How is grade of fire endurance divided?
You can search the answer on the Internet, thank you!
Q:Why do magnesium oxide refractory bricks can be made into refractories?
The substance used in refractories must have the following characteristics and properties: 1, High stability: Anti-oxidation, anti-reduction and thermal decomposition; 2, High melting point of 2800 degree; 3, Low price. The magnesium oxide refractories have all these three characteristics and properties, particularlly in the aspects of melting point and stability .

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