Refractory Mullite Insulating Refractory Brick JM 40

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CMAX insulating firebricks are classified under temperature between 1300 to 1700, manufactured from high purity alumina clay.

1. Lower content of iron, alkaline and impurities, good high temperature properties.
2. Homogeneous structure, light weight, energy saving because lower heat storage in the furnace during cooling cycles.
3. High strength, good thermal shock resistance under high temperature.
4. Precise sizes due to grinding and shaping after sintering, which meets the requirement of construction.
5. Max service temp: Up to 1730C (3160F)


Light weight and low thermal conductivity    
Low heat storage  
Low iron and impurities  
High thermal shock resistance


Application of Insulating brick

Metallurgical Industry: blast furnace, hot blast furnace, heating furnace, etc..

Petrochemical Industry: ethylene cracking furnace, hydrogen furnace, the main furnace, heating furnace, etc..

Ceramic industry: roller kiln, kiln, etc..

Glass industry: glass furnace regenerator, etc.

Carbon industry: carbon furnace, etc..

Aluminum electrolysis industry: aluminum reduction cell, etc.

Other industries: tunnel kiln, shuttle kiln, etc.


Advantages of heat insulation brick

Low thermal conductivity: many air holes will bring good thermal insulation effect, energy saving.

High crushing strength: high crushing strength, volume stability.

Low heat storage: small heat storage, absorb more heat, energy-saving effect is obvious.


Technical Data






Classification       Temperature, /          





Bulk       Densityg/cm³  





Reheating       Linear Change, %

 ≤0.9                     (1550,12   h)  

            ≤0.8                          (1510,12   h)

            ≤0.7                             (1410,12     h)

 ≤0.5                         (1230,12   h)  

Al2O3       Content, %           





Fe2O3       Content,       %                   





Thermal       Conductivity:      

 800,   w/m.k     





 1000,   w/m.k





 1200,   w/m.k





Insulating brick

Refractory Mullite Insulating Refractory Brick JM 40

Refractory Mullite Insulating Refractory Brick JM 40

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Q:Several kinds of energy-saving bricks
Energy saving thermal insulation brick is a new type of energy-saving building insulation technology with inorganic composite materials as the main material. It is an ideal technology to replace the traditional wall insulation.
Q:Can fly ash brick keep warm?
Add blocks and have autoclaved fly ash bricks, do not you?
Q:There are several construction techniques for exterior wall insulation
Exterior wall internal insulation technologyThe interior heat preservation of the wall is to place the heat insulation material on the inside of the outer wall.Advantage:1) waterproof, weather resistance and other technical indicators of finishes and insulation material requirements are not very high, gypsum board, gypsum plaster mortar can meet the use requirement, convenient;2) the internal insulation material is separated by the floor slab and is only constructed within a high storey without scaffolding;3) in the hot summer and cold winter and hot summer and warm winter zone, the inner heat preservation can meet the requirement;4) for the energy transformation of existing buildings, especially at a time when the housing sold to individuals, the whole building (source: China insulation network) or the entire district unified reform is difficult, only by the possibility of a large number of internal insulation. Therefore, in recent years, the exterior wall insulation has also been widely used.Shortcoming:1) because of beam, slab, structural column will cause thermal bridges, more heat loss;2) due to the material, structure, construction and other reasons, the cracking of the facing layer;3) it is not convenient for users to decorate two times and hang ornaments;4) occupy indoor use space;5) the energy saving of the existing buildings is very disturbing to the daily life of the residents.6) wall under outdoor climate, the temperature difference between day and night and the large temperature difference between summer and winter, easy to cause the wall cracking.
Q:How shall the sintered porous self insulation bricks be laid at the bottom of the beam?
All reserved holes larger than 200 * 200 shall be reserved
Q:What are the insulation materials for heating buried pipelines?
Heating pipe insulation material should be heat-resistant, flame retardant, small thermal conductivity, low moisture absorption, no corrosion. In order to enhance the mechanical strength of the general production into a massive, commonly used rock wool pipe shell; superfine glass wool pipe shell, polyurethane foam pad pad; perlite insulation materials.
Q:What is the bulk density of the sintered bricks?
The Dragon such high aluminum refractory brick density is generally around 1000, heavy refractory brick, high alumina brick HLGX heavy weight in general 2000Kg/m fand.
Q:What is composite sintering insulation bricks?
The brick belongs to the porous brick and has good heat preservation performance. Reached the national 50%~65% energy efficiency standards. High safety (no crack, no seepage), strong durability (with building life), economy (self insulation, no need to increase the cost of insulation).
Q:The project cost in hydropower No.3 shaft wall is solid brick or insulating brick?
From the structure principle, hydropower shaft with solid brick, is to consider the safety performance of the structure.
Q:Insulation brick should pay attention to external walls?
Using special powder pointing pointing, check the horizontal joints and then hook the vertical slot, after cancelling the recessed brick outer surface 2mm, tile seam after hook silk or cotton cloth clean, after inspection of the large area pointing outside the walls, should be the implementation of a large area of local cleaning after cleaning, to ensure the whole project clean and beautiful.
Q:What is the bulk density of insulating bricks?
National classification standard: water absorption rate of ceramic tile is less than or equal to 0.5%;

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