Description of Andalusite Brick

Andalusite bricks are made of high-purity alumina and mullite, with a refractoriness of up to 1700°C. They have excellent thermal shock stability and slag resistance and are widely used in high-temperature industrial furnaces such as blast furnaces and hot blast furnaces.

Technique Data of Kerui Andalusite Brick

Andalusite Refractory Bricks		RH-155	RH-150	RH-145	RH-140	RH-135	RH-130
Al2O3, %	≥	69	65	61	57	53	49
Fe2O3, %	≤	1	1	1.2	1.2	1.5	1.5
TiO2, %	≤	0.5	0.5	0.5	0.6	0.6	0.6
Apparent Porosity, %	≤	20	20	20	20	20	20
Bulk Density, g/cm³		2.55~2.70	2.50~2.65	2.45~2.60	2.40~2.55	2.35~2.50	2.30~2.45
Cold Crushing Strength, MPa		55	55	50	50	40	40
0.2MPa Refractoriness Under Load, ℃	≥	1700	1700	1650	1600	1520	1450
Permanent Line Change, %		1500℃*2h ±0.2			1450℃*2h ±0.2

Advantages of Andalusite Brick

1.Excellent refractoriness up to 1700℃.

2.High chemical stability, resists acid erosion.

3.Low creep rate, ensures volume stability.

4.Strong resistance to thermal shock.

5.Good mechanical strength, resists peeling.

Application of Andalusite Brick

Andalusite brick is widely used in blast furnaces, hot blast stoves, steel ladles, rotary kilns, and other high-temperature industrial furnaces.