Types Of Sillimanite Refractory Brick For Furnace
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Features:
The sillimanite brick is made of sillimanite minerals.After high temperature calcination,it become mullite and
dissociate silicon dioxide.Generally use high-temperature firing method and slurry casting method to produce.
1.Good thermal stability.
2.Strong resistance to chemical attack.
3.It is the first choice of stable material for glass forming.
Sillimanite brick physiochemical index:
Item |
Properties |
||||||
Sillimanite |
Andalusite |
Cordierite and mullite |
Pouring sillimanite |
||||
LS-65 |
L-60 |
H-60 |
HS-55 |
SPCD-50 |
SPCD-60 |
CS-58 |
|
AL2O3(%) |
65 |
60 |
60 |
55 |
50 |
60 |
58 |
Fe2O3(%) |
|
|
|
|
|
|
0.8 |
Refractoriness,°C |
1790 |
1790 |
1790 |
1770 |
1770 |
1790 |
1790 |
Apparent porosity % |
22 |
22 |
22 |
22 |
24 |
24 |
26 |
Cold Crushing strength MPa |
50 |
50 |
40 |
40 |
40 |
50 |
50 |
Bulk density,g/cm3 |
2.2 |
2.2 |
2.5-2.7 |
2.5-2.7 |
2.4 |
2.4 |
2.2 |
Softening temperature under load,KD°C≥ |
1550 |
1500 |
1500 |
1450 |
1450 |
1500 |
1450 |
Permanent linear change,%(°C×h) |
±0.2 |
±0.2 |
±0.2 |
±0.2 |
(1000°C)≤±0.5% |
(1000°C)≤±0.5% |
1400°C×2h +0.1 -0.3 |
Application |
Used for temperature change severe industrial furnace and thermal lining equipment |
All sorts of kiln burner brick and ceramic kiln brick |
All industrial furnace |
Types Of Sillimanite Products | |
Item | Index |
Al2O3(%) | >60 |
SiO2(%) | ≤37 |
Fe2O3 | ≤1 |
Refractoriness ℃ | >1790 |
0.2Mpa Refractoriness under load ℃ | 1500 |
Reheating linear change % 1400℃x2h | 0.15 |
-0.5 | |
Apparent porosity % | ≤25 |
Bulk density | 2.2-2.4 |
Cold crushing strength Mpa | >50 |
Sillimanite product |
Forehearth brick, trough, rotating tube, spout, stirrer, punch, barrel, guard brick, burner brick, beam plate brick, etc. |
Application |
The discharging hole of glass tank furnace; Forehearth and gob feeder for glass tank furnace; The furnace lining, furnace throat for blast furnace; Kiln furniture for ceramic industry. |
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