High-alumina refractory castables are made of high-alumina aggregate, powder, binder and admixture in a certain ratio. They have good high-temperature performance, high refractoriness, no shrinkage, wear resistance and other characteristics. High-alumina castables are made of high-alumina aggregate, powder, binder and admixture in four-grade particle size.
High-strength and high-aluminum refractory castables are refractory castables made from high-aluminum raw materials as aggregates and powders in traditional proportions and adding binders. On the basis of formulating high-strength and high-aluminum castables, the particle gradation is adjusted, different admixtures are added, the cement dosage is reduced, the performance is improved, the medium-temperature strength and load softening temperature are increased, the thermal conductivity is reduced, and the thermal stability is good . The furnace body has strong structural integrity, better air tightness than brick furnaces, extends the furnace life, saves furnace repair costs, and has significant economic benefits and other characteristics of high-aluminum refractory castables.
High-strength and high-aluminum refractory castables have the characteristics of resistance to penetration, corrosion resistance, impact resistance, wear resistance, and good mechanical properties. They are widely used in power station boilers and other thermal kiln equipment.
High Alumina Series Refractory Castables
|
NAME/ITEM/INDEX |
UNIT |
High alumina refractory castable |
High alumina, high strength, low cement Refractory castable |
High alumina, high strength, low cement Refractory castable |
High alumina, high strength, low cement Refractory castable |
|
|
G-14 |
G-15 |
G-16 |
G-16K |
|||
|
chemical compsition |
Al2O3 ≥ |
% |
60 |
65 |
70 |
75 |
|
SiO2 ≥ |
25 |
20 |
20 |
20 |
||
|
cold modulus of rupture ≥ |
110℃×24h |
MPa |
8.0 |
10 |
10 |
10 |
|
1100℃×3h |
8.0 |
12 |
12 |
10 |
||
|
cold crushing strength ≥ |
110℃×24h |
MPa |
40 |
50 |
60 |
80 |
|
1100℃×3h |
80 |
100 |
100 |
100 |
||
|
bulk density110℃×24h ≥ |
g/cm³ |
2.45 |
2.55 |
2.65 |
2.75 |
|
|
linear change after heating(1100℃×3h) |
% |
-0.1～-0.3 |
-0.1～-0.3 |
-0.1～-0.3 |
-0.1～-0.3 |
|
|
Maximum operating temperature |
℃ |
1450 |
1500 |
1600 |
1650 |
|
|
Construction reference water addition amount |
% |
6～7.5 |
6～7 |
5.5～6.5 |
4.5～5.5 |
|
|
Construction method |
vibration |
|||||
|
characteristic |
Add heat-resistant steel fiber according to user requirements |
|||||
Hot Tags: high aluminum refractory castable, China high aluminum refractory castable manufacturers, suppliers, factory, refractory materials for incinerators, Silicon Carbide Wear Resistant Refractory Plastic, High Aluminum Refractory Castable