Calcium Aluminate cement
1.can be harden quickly
2.can resist high temperature
3.low impurity
4.high early strength
1.can be harden quickly
2.can resist high temperature
3.low impurity
4.high early strength
High alumina cement,Fused calcium aluminate cement,refractory cement,fire cement,pure calcium aluminate cement
Fused pure calcium aluminate cement is manufactured by industry alumina and limestone from high tempertured fused in electric arc furnace,it has the characteristics of high purity,stable quality,high early strength,be harden quickly,good fineness and so on.
Fused pure calcium aluminate cement is widely used to make high performance bulk refractory,like castables refractory,etc.
| Items | AL-65 | AL-70 | AL-75 | AL-80 |
| Al2O3,% | 63.5~66.5 | 68.5~71.5 | 73.5~76.5 | 78.5~81.0 |
|
CaO,%
|
32.5~34
|
26.5~30.5
|
24.0~26.0
|
17.0~20.0
|
| SiO2,% | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 |
|
Fe2O3,%
|
≤0.5
|
≤0.5
|
≤0.5
|
≤0.5
|
|
Specific surface area,cm2/g
|
≥5000
|
≥5000
|
≥5500
|
≥7000
|
|
initial setting time,min
|
≥40
|
≥45
|
≥30
|
≥15
|
|
final setting time,h
|
≤6
|
≤6
|
≤6
|
≤6
|
|
modulus of rupture,Mpa(24h)
|
≥6.0
|
≥5.0
|
≥4.5
|
≥4.0
|
|
compressive strength,Mpa(24h)
|
≥45.0
|
≥40.0
|
≥40.0
|
≥35.0
|
|
Refractoriness,°c
|
1560
|
1560
|
1790
|
1790
|
|
Packing
|
be packing in woven bag
|
be packing in woven bag
|
be packing in woven bag
|
be packing in woven bag
|
|
Usage
|
used for making bulk refractories
|
used for making bulk refractories
|
used for making bulk refractories
|
used for making bulk refractories
|