Insulating Fire Brick 65% Al2O3 Min High Alumina

Insulating Fire Brick 65% Al2O3 Min High Alumina

Ref Price:

Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 500 m.t.

Supply Capability:: 1000 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Specifications

1.65% Al2O3 min;
2. Refractoriness: 1790C min;
3.For steelmaking furnaces;
4.ISO 9001 Certificate;
5.Custom shape.

High alumina insulating fire brick is a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory, which has such advantages as high porosity, small volume density, good insulation effect, high mechanical intensity, small thermal conductivity and long service life. For various industrial kilns & furnaces, it is a kind of essential refractory for energy saving and temperature preservation.

This series of High Alumina Insulating Fire Brick are made of selected high alumina bauxite, kaolin caly, hollow microsphere as the mian material.By shaping at high pressure and sintering at high temperature.

Items		Mark
		Hihg Alumina brick			Clay brick		Phosphoric acid dipping clay brick
		GL-65	GL- 55	GL- 48	ZGN-42	ZGN-42	Phosphoric acid dipping clay brick
Chemical Compositions ( %) ≥	Al2O3	65	55	48	42	42
	Fe2O3	2.0	2.0	2.0	1.6	1.7
	P2O5	-	-	-	-	-	7
Refractoriness ℃		1790	1770	1750	1750	1750	-
Apparent Porosity (%)≤		19	19	18	15	16	14
Alkali resistance (strength degradation)%≤		-	-	-	-	-	15
0.2MPaRefractoriness under load,℃≥		1500	1480	1450	1450	1430	1450
CCS (Mpa)≥		58.8	49	49	58.8	49	60
Dead burnt linear change(%)≤	1450℃×2h			0/-0.2	0/-0.2	0/-0.3	0/-0.2
Dead burnt linear change(%)≤	1500℃×2h	0/-0.2

Starting from the raw material into factory, Every production process of high alumina insulating fire bricks should through strict quality control, both the raw materials and finished products should be inspected time after time, to esure that each product to satisfy our customers, because of advanced automatic batching system and 2500 tons automatic hydraulic machine in the world were introduced, then a new line of the ladle fire bricks and other styling refractory products with a superior quality was put into production.

Q: How do insulating fire bricks provide thermal insulation?: The unique composition and structure of insulating fire bricks enable them to provide thermal insulation. These bricks utilize lightweight materials like clay, shale, and other minerals, which possess low thermal conductivity. As a result, they are not easily conductive of heat, serving as an effective barrier against heat transfer. Furthermore, insulating fire bricks are intentionally designed to have a porous structure. This design incorporates small air pockets within the bricks, effectively reducing the conduction of heat. These air pockets function as a barrier, effectively restricting the movement of heat from one side of the brick to the other. Moreover, insulating fire bricks possess a high melting point, rendering them suitable for high-temperature applications. This characteristic allows the bricks to endure extreme heat without undergoing deformation or breakdown, ensuring long-lasting thermal insulation. To summarize, the low thermal conductivity, porous structure, and high melting point of insulating fire bricks collectively contribute to their ability to provide thermal insulation. These attributes work in unison to minimize heat transfer, making them an excellent choice for situations requiring thermal insulation.

Q: Can insulating fire bricks be used for high-temperature insulation?: Yes, insulating fire bricks can be used for high-temperature insulation. These bricks are specially designed to withstand extreme temperatures, making them suitable for insulation in applications such as kilns, furnaces, and fireplaces. They have excellent thermal conductivity and can effectively reduce heat loss, making them an ideal choice for high-temperature insulation needs.

Q: Are insulating fire bricks resistant to corrosion?: In general, insulating fire bricks exhibit resistance to corrosion. They are composed of high-temperature materials like alumina, silica, and other refractory substances, which grant them exceptional protection against chemical corrosion. These bricks have been specifically engineered to endure elevated temperatures and harsh surroundings, rendering them highly impervious to corrosion caused by acids, alkalis, and other corrosive agents. Nonetheless, it is crucial to acknowledge that the degree of corrosion resistance can vary depending on the precise composition and manufacturing process of the insulating fire brick. Thus, it is recommended to consult the manufacturer or supplier for detailed information regarding the corrosion resistance of a specific insulating fire brick.

Q: Can insulating fire bricks be used as a base material for casting refractory shapes?: Indeed, insulating fire bricks are viable for serving as a foundational material for molding refractory shapes. These bricks are engineered with the explicit purpose of enduring extreme temperatures and delivering insulation, rendering them appropriate for deployment in refractory applications. Notably, they possess a low thermal conductivity, thereby minimizing heat dissipation and maximizing energy efficiency. Furthermore, their lightweight composition facilitates convenient handling and shaping, rendering them an optimal foundational material for casting refractory shapes. Nevertheless, it is crucial to carefully scrutinize the specific requirements and characteristics of the refractory shapes being molded to ascertain that insulating fire bricks are the most suitable option for the intended application.

Q: Do insulating fire bricks have a high compressive strength?: Yes, insulating fire bricks typically have a high compressive strength. These bricks are made from special refractory materials that are designed to withstand high temperatures and mechanical stress. As a result, they have excellent compressive strength, allowing them to bear heavy loads without cracking or breaking. The high compressive strength of insulating fire bricks makes them ideal for applications where structural integrity is crucial, such as in furnaces, kilns, and other high-temperature industrial equipment.

Q: Can insulating fire bricks be used in heat exchangers?: Yes, insulating fire bricks can be used in heat exchangers. Insulating fire bricks are designed to have excellent thermal insulation properties, which makes them suitable for use in high-temperature applications such as heat exchangers. These bricks are made from lightweight materials and have low thermal conductivity, allowing them to effectively reduce heat loss or gain in the heat exchanger. Additionally, insulating fire bricks have high resistance to thermal shock and can withstand extreme temperatures, making them a reliable choice for heat exchanger applications. Overall, using insulating fire bricks in heat exchangers can contribute to improved energy efficiency and performance.

Q: Can insulating fire bricks be used for insulation in chemical plants?: Yes, insulating fire bricks can be used for insulation in chemical plants. These bricks are designed to withstand high temperatures and provide excellent thermal insulation, making them suitable for insulating equipment, furnaces, and other structures in chemical plants where heat management is crucial.

Q: Do insulating fire bricks require preheating before use?: Yes, insulating fire bricks typically require preheating before use. Preheating helps to eliminate any moisture present in the bricks and prevent thermal shock when exposed to high temperatures. This process ensures their stability and enhances their insulation properties.

Q: Are insulating fire bricks resistant to weathering?: Yes, insulating fire bricks are resistant to weathering. Insulating fire bricks are made from high-quality refractory materials that are designed to withstand extreme temperatures and harsh weather conditions. They are specifically engineered to have excellent resistance to thermal shock, erosion, and corrosion caused by exposure to various weather elements such as rain, snow, wind, and sunlight. Additionally, insulating fire bricks are also resistant to chemical attacks, making them highly durable and suitable for long-term use in outdoor applications. Overall, their robust composition and resistance to weathering make insulating fire bricks a reliable choice for insulation and construction purposes in outdoor environments.

Q: Can insulating fire bricks be used for insulation in heat treatment furnaces?: Indeed, insulation in heat treatment furnaces can be achieved through the utilization of insulating fire bricks. These bricks are specially engineered to endure extreme temperatures and offer exceptional thermal insulation properties. With their low thermal conductivity, they effectively trap heat within the furnace. Moreover, their lightweight composition facilitates effortless handling and installation. Insulating fire bricks find widespread application in diverse heat treatment procedures, including annealing, tempering, and hardening, guaranteeing utmost heat retention and energy efficiency within the furnace.

Send your message to us

*Email

*TEL

*Quantity

*Unit