Lightweight Mullite IFB Refractory Brick-Henan Hongtai Kiln Refractory CO.,LTD.

Product Parameters

Product detail

Lightweight Mullite IFB Refractory Brick

Mullite insulation brick is a high-alumina refractory brick with mullite as the main crystal phase. It has uniform thermal expansion, heat insulation, high temperature resistance, and good chemical corrosion resistance. It is used in hot blast furnaces, metal melting furnaces, forging furnaces, etc.

Mullite insulation brick introduction
Mullite insulation bricks are high alumina refractories with mullite as the main crystal phase. The bulk density of lightweight heat-insulating brick is 0.60～1.25g/cm3. Working temperatures range from 900℃ to 1600℃ the refractory of mullite brick is relatively high, reaching above 1790 ℃. The starting temperature of load softening is 1600 ~ 1700 ℃. Good thermal shock resistance.

lightweight heat-insulating bricks are made from good quality and super-pure raw materials, with strictly classified fillings according to their grades.this material profitable by lessening fuel costs, construction costs and reducing the amount of time spent in the high temp furnace

Product Advantages

Product features
Low thermal coductive, low heat storage
Purity
Good thermal insulation,enable the use of thin-walled constructions
The good alumina contents confergcod refractoriness
Low iron and alkali flux content contributes to their stability to reducing atmosphere
These can be machined to specialshapes, incurring fewer sectionsand joints

Product Applications

1. Metallurgy Industry (Steel Smelting)

Hot Blast Stove: Mullite bricks serve as critical refractory materials for hot blast stoves. They are primarily utilized in high-temperature, high-pressure zones subject to severe thermal fluctuations—such as the dome, combustion chamber, checkerwork (in the middle and upper sections), mixing chamber, and hot air outlet.

Blast Furnace: Used for the lining of the blast furnace hearth and bottom, and occasionally for the lower-to-middle sections of the furnace shaft.

Torpedo Ladle / Steel Ladle: Mullite bricks can be employed as the lining for torpedo ladles, as well as for the permanent lining layer of steel ladles or in areas heavily impacted by the flow of molten steel.

2. Glass Industry
The environment within glass melting furnaces is extremely harsh, involving high temperatures and intense erosion from alkaline vapors; in this context, mullite bricks (particularly fused-cast mullite bricks) play an indispensable role:

Glass Melting Furnace: Used for the furnace crown (arch), checkerwork within the regenerators, superstructure components, flow channel bricks, and load-bearing sections.

3. Ceramics Industry
Ceramic kilns require the maintenance of high temperatures over extended periods and demand refractory materials with excellent chemical stability to prevent contamination of the ceramic ware:

Shuttle Kilns, Tunnel Kilns, Roller Kilns: Mullite bricks constitute the primary material for the furnace linings, kiln arches, and combustion chambers of these kilns.

Kiln Furniture: Items such as kiln shelves, support pillars, and setter plates are also frequently manufactured from mullite-based materials.

4. Petrochemical and Chemical Industries
In petrochemical facilities, numerous reactors and furnaces must withstand the rigors of high temperatures, high pressures, and complex chemical environments:

Ethylene Cracking Furnaces, Reformers, Incinerators: Used as the lining material for these high-temperature reaction furnaces. 5. Cement and Building Materials Industry
Although silicon-mullite bricks (mullite-silicon carbide composites) are commonly used in cement kilns, pure mullite bricks still retain a significant role in certain specific sections or in lightweight refractory applications:

Cement Rotary Kilns and Precalciners: Mullite bricks can be utilized for the lining of precalciners, while lightweight mullite bricks are frequently employed as the thermal insulation layer within rotary kilns.