Alumina Bubble Castable

Working Temperature: 1600ºC;
Bulk Density: 1.5-1.6g/cm3;
Cold Crushing Strength: ≥18-22/MPa;
Permanent Liner Change: -0.75-0.76%;

INQUIRY

Product Details

Product Tags

Alumina bubble castable

Alumina bubble castable is a kind of light refractory material with excellent high temperature resistance and energy saving, and it is very stable to use in various atmospheres. Especially it is used in the high temperature furnace at 1800℃.

Alumina bubble castables have high refractoriness under load, high strength, and good heat insulation performance. Service temperature can reach 1600℃-1700℃. It is an ideal thermal insulation material for carbon black reaction furnaces and high-temperature special lining permanent layers. It has achieved very satisfactory energy-saving effects in high-temperature and ultra-high temperature furnaces such as petrochemical industrial gasifiers, carbon black industrial reaction furnaces, metallurgical industrial induction furnaces, etc.

Technique Data of Alumina Bubble Castable:

Item		Specification
		Low cement bonder	Aluminum sulfate bonder
Al₂O₃ %		≥95	≥95
CaO %		≤2.5	/
Bulk Density, g/cm³		≤1.6	≤1.5
CCS, MPa	110℃×24h	≥7	≥5
	1500℃×3h	≥22	≥18
Thermal Conductivity, W/(m·K) 1000℃		≤0.65	≤0.76
Working Temperature, ℃		＞1600	＞1600

Features:
1.High load softening temperature.
2.High strength.
3.Good thermal insulation.

Application:
It is mainly used for the lining of industrial ceramics, structural ceramics, electronic ceramics, petrochemicals, metallurgy, coal chemical industries and other high-temperature furnaces and heat insulation materials for ultra-high-temperature furnaces.