Ladle tundish castable High alumina Low cement refractory cement

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Min Order Qty:
25 m.t.
Supply Capability:
2000 m.t./month

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Product Description:

Definition

It is a non-metal inorganic construction material based on calcium aluminate(CaO•Al2O3) or calcium dialuminate(2CaO•Al2O3).It is made up by the way of having natural bauxite or industrial alumina and calcium carbonate(limestone) which are in certain proportion calcined or electric melted, it can also be made through melting laterite and limestone. Compared with silicate cement, calcium aluminate cement has a higher refractoriness, thus it is widely used as binder of refractory castable.

 

Category

Calcium aluminate cement is sorted into two kinds by chemical composition: common calcium aluminate cement (Al2O353%~72%,CaO21%~35%) and pure calcium aluminate cement(Al2O372%~82%,CaO19%~23%). And common calcium aluminate cement is divided into low iron type(Fe2O3<2.0%) and high iron type(Fe2O37%~16%). The low iron type calcium aluminate cement which has a Al2O3 content of 53%~56% and CaO of 33%~35% is called bauxite cement; the one which has a Al2O3 content of 59%~61% and CaO of 27%~31% is called Aluminium-60 cement; the one which has a Al2O3 content of 65%~70% and CaO of 21%~24% is called low calcium aluminate cement, another kind is fast hardening super early strength calcium aluminate cement. And pure calcium aluminate cement is divided into conventional type (Al2O3 content is 72%~78%)and super high alumina type(Al2O3 content is 78%~85%).

 

Specifications:

 

Specification of three grads of CA50

Mark

A600

A700

A900

Composition

(%)

SiO2

7.8

7.5

5.5

Al2O3

50.0

51.0

53.5

Fe2O3

2.5

2.5

2.5

Fe2O3

0.4

0.4

0.4

SSB (m2/kg)

300

320

350

Initial Setting Time(min)

45

60

90

Final Setting Time (h)

6

6

6

Breaking Strength(MPa)

1d

6.0

6.5

8.0

3d

7.0

7.5

10.0

Compressive Strength(MPa)

1d

45

55

72

3d

55

65

82

 

 

Item Briand

 

CA70

 

CA80

 

 

Chemical Composition

         %

SiO2

1.0

0.5

AL2O3

68.0

77.0

Fe2O3

0.7

0.5

R2O

0.4

0.4

S

0.1

0.1

Cl

0.1

0.1

325M Residue on Sieve (%)

5

5

Surface Area (m2/kg)

400

450

Initial Setting Time (min)

45

45

Final Setting Time (h)

6

6

 

Breaking Strength

     (MPa)

6h

--

--

1d

5.5

5.0

3d

6.5

6.0

 

Compressive Strength

     (MPa)

6h

--

--

1d

40

30

3d

50

40

 

Application

 

Calcium aluminate cement is mainly used as binder of refractory castable and gunning mix. Common calcium aluminate cement is applicable to low-grage and medium-grade refractory castable, such as firecaly castable and high alumina castable etc; Pure calcium aluminate cement is applicable to high-grade refractory castable, such as corundom castable, mullite castable, chrome containing corundum castable and spinel castable etc; The calcium aluminate cement addition quantity of common refractory castable is 10%~20%, low cement castable is 5%~10%, super low cement castable is less than 5%. Addictives which can improve workability may be added to castables bond by calcium aluminate cement so as to meet the requirements of construction, such as setting accelerator, setting retarder, water reducer (dispersant), plasticizer etc.

Ladle tundish castable High alumina Low cement refractory cement

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Q:Is there vermiculite in refractory?
Foreign horticultural vermiculite includes four levels according to the diameter: 3 8mm is No. 1; 2 3mm No. 2, the most commonly used; 1 2mm to No. 3; 0.75 1mm to No. 4, suitable for seed germination. Vermiculite has strong water absorption capacity,
Q:Fefractory of aluminium oxide.
Do you mean the alumina hollow ball brick? We can exchange private messages in specific.
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:I am a refractory material manufacturer, sold products, money is always not back, anxious to die, what is the way?
Metallurgical industry downturn. There is fierce competition in the refractory industry.
Q:What's the A grade fireproofing material?
1. fire-proof plate; 2. fireproof wooden door; 3. fireproof wooden window frame; 4. fire resisting shutter; 5. fireproof and mothproof wood; 6. fireproof glove compartment; 8. fire retardant coating; 9. fire-proof sealing material.
Q:What crusher is used for raw material of broken refractory material? What is the rough crushing process? What are the materials? Thank you!
What is said above ia wrong. Crusher choosed by general refractory material factory is roller type, for example: Roll crusher,teeth-roller cracker. Choose different crushing equipment according to your requirements. You can go "Zhengzhou Keda Machinery Co., Ltd." to inspect! ! ---Hope it is helpful to you!
Q:What's the fire endurance of fire windows?
Fire endurance of fire doors and fire windows stipulated by the fire prevention norm: Fire endurance of A class fire door or fire window is 1.2h rather than 1.5h, and fire endurance of B class fire door or fire window is 0.9h rather than 1.0h. Fire prevention code doesn't explicitly state that the fire door has thermal insulation function, so it can definitely be interpreted that the fire door only has fire integrity. For the fire door without heat-shielding performance, at certain distance from the unexposed surface, it has strong thermal radiation and is easy to hurt people. For the A class thermal insulating fire door, its fire integrity is 0.1h shorter than that of the corresponding fire door stipulated in the specification, but its heat-shielding performance and integrality is improved. All in all, compared with the specification that the fire integrity of the A class fire door should be 0.6h, it has much more improved its performance.
Q:What are the advantages of refractory material?
Jingute WHL type, GDS type
Q:I wanna ask you, which level is b1 fireproof and thermal inuslation matertial ??
which level is b1 fireproof and thermal inuslation matertial: I soppose you mean rubber and plastic! Only rubber and plastic has b1b2 level. Level b1 is the fireproofing level b1, because the rubber and plastic does not belong to the fireproofing material. It only has fire retardant. The wholesale of all kinds of thermal insulation material and construction needs to look at the name.
Q:What are the application of old refractory bricks?
It can still be used as refractory bricks or refractory. The quality of auxiliary material is not as good as bauxite.

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