High Alumina Castable

High alumina castable is a kind of hot sales refractory castable for furnace application in Rongsheng factory manufacturing and is widely used as lining for various kilns such as boilers, blast furnace hot blast stoves, heating furnaces, and ceramic kilns.

Characteristics of high aluminum castable

1. High-temperature resistance: High alumina castables can withstand extremely high temperatures, usually above 1500°C, and maintain stable physical and chemical properties.
2. Wear resistance: It has high wear resistance, can resist mechanical impact and abrasion at high temperatures, and extends the service life of the equipment.
3. Chemical erosion resistance: High alumina refractory castables have good resistance to chemical substances such as acids and alkalis, and can resist chemical erosion and corrosion.
4. Excellent thermal shock stability: It can withstand thermal shock cycles at high temperatures, is not prone to cracking and peeling, and maintains structural integrity.
5. Good construction performance: High alumina refractory castables can be constructed by pouring, spraying, or painting, and are suitable for equipment linings of various shapes and sizes.
6. High strength and durability: It has high strength and durability, and can work stably in high-temperature environments for a long time.

Technical parameter of high alumina refractory castable

Item	High Alumina Refractory Castable		RS-1	RS-2	RS-3
Al2o3	%		60	65	70
Bulk Density	g/cm3	110℃*24h	2.40	2.60	2.80
Cold Crushing Strength	Mpa	110℃*24h	55	60	65
		1000℃*3h	80	90	100
Modules of Rupture	Mpa	110℃*24h	7	8	9
		1000℃*3h	9	11	13
Linear Change after firing	%	1000℃*3h	+_0.3	+_0.3	+_0.3
Room temperature wear	Cm3	1000℃*3h	9	8	7
Thermal shock resistance	Times	1000℃	20	20	20
Max Service temperature	℃		1400	1450	1500

Application of high-alumina castable

High-alumina refractory castables are a kind of refractory material with excellent performance, suitable for the lining and protective layer of various high-temperature equipment, such as metallurgical furnaces, glass kilns, cement kilns, etc. It can withstand thermal shock, chemical corrosion, and mechanical impact in high-temperature environments, protect equipment, and extend its service life.

Customized high aluminum castable

High-aluminum castable refers to refractory castable with Al2O3 content greater than 48%. Rongsheng Refractory Material Factory can customize castables with different aluminum contents. The higher the castable content, the higher the high-temperature resistance of the refractory castable. When the Al2O3 content is 70%, the high-temperature resistance can reach 1500℃.

In addition to high-temperature castables, we can also provide refractory cement, refractory plastics, refractory spray coatings, and refractory ramming mass, as well as refractory bricks in other areas.

Construction methods of different types of castables

According to different construction methods, it can be divided into high-aluminum vibration castable, high-aluminum self-flow castable, high-aluminum coating material, etc.

Construction of high-aluminum vibration castable

When constructing high-aluminum vibrating castables, pour the stirred castables into the supported molds. Use vibration equipment to vibrate to expel the air in the material until there are no large bubbles on the surface or the surface is slurry, forming a dense structure.

Construction of high-aluminum self-flowing castables

High-aluminum self-flowing castable does not require mold support during construction. After being evenly stirred, it has strong fluidity. Relying on gravity, it automatically fills the construction site and automatically discharges the air in the material to form a dense structure;

High-aluminum coating castable

High-alumina coating castable is applied manually or mechanically. It has strong adhesion, low rebound rate, and fast construction speed.