Calcium Aluminate Cement Castable
1.Binder -- There are two kinds of calcium aluminate cement as binder
a.general calcium aluminate cement:made by high alumina bauxite and limestone materials
b.high pure calcium aluminate cement:made by industrial alumina and limestone
2.Refractory aggregate
a.fire clay (chamotte)
b.high alumina
c.mullite and corundum.
|
Al2O3 % |
40-45 |
60-65 |
70-75 |
95 |
|
|
SiO2 % |
35-40 |
23-30 |
15-20 |
0.4 |
|
|
CaO % |
5-6 |
5-6 |
5-6 |
- |
|
|
Bulk density g/cm3 |
110°C,24h |
2.0-2.1 |
2.4-2.5 |
2.7-2.8 |
- |
|
1350°C,3h |
2.1-2.15 |
2.5-2.6 |
2.7-2.85 |
3.1 |
|
|
Bending Strength MPa |
110°C,24h |
4.5-6 |
5-6 |
5.5-6 |
9 |
|
1350°C,3h |
6-7 |
6.5-7.5 |
7-8 |
15 |
|
|
Compressive strength MPa |
110°C,24h |
30-35 |
40-45 |
45-50 |
60 |
|
1350°C,3h |
45-50 |
50-60 |
55-65 |
100 |
|
|
1350°C Reheating linear change % |
+(0.1-0.3) |
-(0.1-0.3) |
-(0.1-0.5) |
±0.5 |
|
|
Water content to mixture % |
10-12 |
10-12 |
10-12 |
5-6 |
|
|
Service temperature °C |
1350 |
1450 |
1550 |
1800 |
|
Features
1.Easy to operate: times and labor saving, shorten the work time, reduce work strength of workers.
2.Superior property:a.high mechanical strength, b.good thermal shock resistance,c.tiny linear variation,no cracking,d.resistant to scour and erosion,e.good abrasion resistant,f. good volume stability under high temperature.
3.Extend service life: high technical content, good property in using.
Application
|
Product |
Service temperature |
Application |
|
Fire clay (chamotte) castable |
1300-1450°C |
The lining of steel rolling heating furnace,heat treatment furnace,boiler,shaft kiln,preheating zone of rotary kiln |
|
High alumina castable |
1400-1550°C |
1.Lining and nozzle of different heat treatment furnace, 2.steel tapping spout of electric furnace, 3.high temperature zone of lime shaft kiln, 4.kiln head of rotary kiln 5.boiler of power plant |
|
Mullite and corundum castable |
1500-1650°C |
The lining of high temperature furnace such as electric furnace,LF furnace,catalytic cracking reactor of petrochemical industry |
