High Alumina Refractory Cement Supplied by CNBM

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China main port
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
2000 m.t./month

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Product Description:

Description of High Alumina Refractory Cement                                                                                                                            

 

Products

Calcium Aluminate Cement /High Alumina Cement CA-50

Applications

1,As binders calcium aluminates cement are used in concretes and mortars for specialised applications

 for their properties of resistance to corrosion, abrasion and heat combined

with rapid hardening and the ease of controlling grading variations.
Calcium aluminate cements are also used in combination with other fine components. Hydraulic binders

 with new properties are then obtained. In this way, aluminates act as both a complex hydraulic binder and

 a mineral reagent interacting with the other components in the mix.

2,As reagents, calcium aluminates are found in non-hydraulic systems. This is the case in metallurgical treatments

 (iron and steel industry, foundry) where specific grades of calcium aluminate are used for their low-temperature

 melting properties and for trapping molten metal impurities.

 

 

Features

1,Very low mixing-water requirement

2,Very high purity

3,High product consistency

4,High cold and sintered strength

5,Very tight specifications of setting times

 

 

product

CA50F

A600

A700

A900

CA50R

 

Chemical Compositionn   

(%)

SiO2

≤8.0

≤7.8

≤7.5

≤5.5

≤7.0

Al2O3

≥50.0

≥50.0

≥51.0

≥53.5

≥52.0

Fe2O3

≤2.5

≤2.5

≤2.5

≤2.5

≤2.5

R2O

≤0.4

≤0.4

≤0.4

≤0.4

≤0.4

S

≤0.1

≤0.1

≤0.1

≤0.1

≤0.1

Cl

≤0.1

≤0.1

≤0.1

≤0.1

≤0.1

45µm residue (%)

≤20

≤15

≤12

≤8

≤8

Blaine        (m2/kg)

≥300

≥300

≥320

≥350

≥350

InitialSetting (min)

≥30

≥45

≥60

≥90

≥30

FinalSetting  (h)

≤6

≤6

≤6

≤6

≤6

Flexural strength (MPa)

6h

——

——

——

——

≥3.0

1d

≥5.5

≥6.0

≥6.5

≥8.0

≥7.0

3d

≥6.5

≥7.0

≥7.5

≥10.0

≥8.0

Compressive strength (MPa)

6h

——

——

——

——

≥30

1d

≥40

≥45

≥55

≥72

≥60

3d

≥50

≥55

≥65

≥82

≥70

High Alumina Refractory Cement Supplied by CNBM


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Q:What effect does aluminium powder play in refractory bricks?
Aluminum powder is the main temperature resistant material ~ ~ ~ ~!
Q:I would like to know if there is any requirement for refractories in the crucible type high-frequency smelting furnace Worry! I hope you can help me! This time!
High enough for high temperature resistance. Refractory materials for crucibles shall be subjected to a high temperature greater than 1700 DEG C and the softening temperature shall be greater than 1650 DEG c;
Q:Can anyone tell me what is A-leve fireproof material?
Combustion performance of materials can be divided into: A-level, B1-level, B2-level and B3-level, which respectively refer to noncombustible, difficult-flammble, flammable and inflammable materials. Building materials can be divided into four grades based on combustion performance (noninflammability, flame retardancy, flammability and inflammability). According to the stipulation of "Specification of Fireproof Design for Buildings" (GBJ16-1987) (2001 revised edition), fire hazard of production or storage should be divided into A-level, B-level, C-level, D-level and E-level. In "Specifications on Fireproof Design for Petrochemical Enterprises" (GB50160--1992) (1999 Revision), it also stipulates that fire hazard should be classified on the same basis of subtsance danger in usage, production or storage. According to different fire hazard, requirements and measures of oreventing and restricting fire explosion can be put forward from the aspects of fire separation distance, fire resistant rating of buildings, allowed floors, safe evacuation, fire fighting facilities and other aspects.
Q:What's the refractory material?
Frequently used refractory material: AZS brick, corundum brick, direct-bonded magnesia-chrome bricks, carborundum brick, silicon nitride bonded silicon carbide brick, nonoxide refractories like nitride, silicide, sulfide, boride and carbide, and oxide refractories like calcium oxide, chromium hemitrioxide, alumina, magnesium oxide and beryllia. In general, the refractory material include the above. For more information, you can ask for specific advice.
Q:How about the prospect of refractory material?
Area depends the market. Resource-based industry
Q:What needs to be noted when choosing and using blast furnace fireproof materials? Who knows?
there are different temperatures in various parts of the blast furnace, thus using different types of refractory.
Q:What are the characteristics of thealuminium oxide refractory?
Physical properties of refractories include structural properties, thermal properties, mechanical properties, performance and job performance. The structural properties of refractories include porosity, bulk density, water absorption, air permeability and pore size distribution. The thermal properties of refractories include thermal conductivity, thermal expansion coefficient, specific heat, heat capacity, thermal diffusivity and thermal emission rate, ect. Mechanical properties of refractories include compressive strength, tensile strength, flexural strength, torsional strength, shear strength, impact strength, abrasion resistance, creep resistance, adhesive strength and modulus of elasticity, ect.
Q:Does the aluminum silicate fiber can be used outdoors? If not, what other refractories can be used outdoors?
Q:What is refractory brick?
Capability1. Refractory brick is also known as firebrick. It is faint yellow or brownish. Refractory brick with 770 ℃ at high temperatures is called for short firebrick. It is mainly used for building and smelting furnace. It is a refractory material made by fring refractory clay or other refractory material.
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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