Andalusite Refractory Bricks

$Andalusite Refractory Bricks$

Al2O3% (≥) 49-69%
Bulk Density (g/cm³) 2.30-2.70
Refractoriness Underload (℃)1450-1700
Cold Crushing Strength (MPa)35-55

INQUIRY

Product Details

Product Tags

Andalusite refractory bricks

Andalusite refractory bricks use andalusite as raw material, add sillimanite powder, mullite powder, and other powders, add binders according to the proportion, and strictly control the particle size, grade, and impurities such as TiO2 and R2O of the raw materials. After smelting, forming, and drying, it is fired at high temperatures, which can meet the needs of different parts and working environments of modern blast furnace hot blast stoves, and plays an important role in improving the service life of blast furnace hot blast stoves.

Item/Grade	HZS-70	HZS-65	HZS-60	HZS-55	HZS-50	HZS-45
(Al2O3)/%	69	65	61	57	53	49
(Fe2O3)/%	1.0	1.0	1.2	1.2	1.5	1.5
(TiO2)/%	0.5	0.5	0.5	0.6	0.6	0.6
Bulk Density (g/cm³)	2.50-2.70	2.45-2.65	2.45-2.60	2.40-2.55	2.35-2.50	2.30-2.45
Apparent Porosity/%	20 (22)	20 (22)	20 (22)	20 (22)	20 (22)	20 (22)
Cold Crushing Strength/MPa	55 (50)	55 (50)	50 (45)	50 (45)	40 (35)	40 (35)
0.2MPa Refractoriness Underload/℃	1700	1700	1650	1600	1520	1450
Permanent Linear Change/%	1500℃*2h ±0.2	1500℃*2h ±0.2	1500℃*2h ±0.2	1450℃*2h ±0.2	1450℃*2h ±0.2	1450℃*2h ±0.2