Refrctory and Insulating Fire Brick GJM Series

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Loading Port:
Shanghai
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TT OR LC
Min Order Qty:
17 m.t.
Supply Capability:
10000 m.t./month

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General Information

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)

 

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

 

Application
CMAX insulating firebricks can be used as a hot face lining directly exposed to the heat or as a backup insulation layer in iron and steel mills, non-ferrous foundries, petrochemical, ceramic, glass.

 

ITEM

GJM30

GJM28

GJM26

GJM23

Classification Temperature, /      

3000/1650

2800/1540

2600/1430

2300/1260

Bulk Densityg/cm³  

≤1.0

≤0.9

≤0.8

≥0.5

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, %           

≥75

≥65

≥55

≥45

Fe2O3 Content, %             

≤0.5

≤0.6

≤0.7

≤1.0

Thermal Conductivity:      

 800, w/m.k   

≤0.39

≤0.37

≤0.35

≤0.18

 1000, w/m.k

≤0.43

≤0.41

≤0.39

≤0.20

 1200, w/m.k

≤0.48

≤0.46

≤0.43

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Refrctory and Insulating Fire Brick GJM Series 

 

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Q:Why does the water drop first and then rise when the boiler fires?
This is the reason for the zero water level gauge line below the center line of the drum. Under normal conditions for water and evaporation is balanced, after the fire, reduce the amount of steam water mixture into the drum in the evaporation decreased rapidly, reduce the volume of water bubbles, sudden contraction, drum water level decreased rapidly. But not to water change or increase (automatic), water balance is broken, the water level will rise rapidly.
Q:What is the bulk density of insulating bricks?
Stoneware porcelain water absorption rate is greater than 0.5% and less than or equal to 3%; fine stoneware bibulous rate is greater than 3% and less than or equal to 6%; brick bibulous rate is greater than 6% and less than or equal to 10%; pottery tile water absorption rate is greater than 10%. The water absorption rate of expression: ceramic brick brick >6% = >10% = >3% = fine stoneware porcelain stoneware or porcelain >0.5%
Q:What kind of material is clay insulation refractory brick made of?
Alumina silicate refractories with a content of 30% ~ 46% are called clayey refractories. Clay products are mainly made of mullite, glass phase, square quartz and quartz.
Q:Masonry method for boiler refractory brick
Masonry of furnace bottom:(1) the bottom shall be leveled before masonry; when the masonry is made, the walls around the bottom shall be first laid, and the height shall be approximately higher than the surface of the hearth. Then the bottom horizontal line (for example, multi layer masonry, together with the layer line) is marked on the straight wall, and then the bottom can be built.(2) when the bottom is made of multi layer bricks, the masonry shall be carried out by layer by layer, and the upper, lower and the same floor shall be staggered. The long side of the surface brick shall be vertical to the direction of the flow of slag or gas.(3) the high temperature area and the furnace bottom which need to be frequently repaired must leave the expansion gap at the bottom of the furnace and the straight wall, and the asbestos rope or asbestos board will be embedded in the gap.
Q:What are insulation bricks for? Do not use high-rise buildings on the ah?
Buildings usually do exterior thermal insulation, such as EPS board, polyphenyl board and so on
Q:How to reinforce a porous brick foundation?
Pressure grouting method is changed from independent foundation to strip foundation, from strip foundation to raft foundation and pile foundation, from brick strip foundation to concrete strip foundation.
Q:Can fly ash brick keep warm?
Add blocks and have autoclaved fly ash bricks, do not you?
Q:Insulation brick should pay attention to external walls?
Construction at room temperature, 24h after spraying water conservation, water spraying should not be too much, not flow. Unsuitable for winter construction. According to the national standard, seven consecutive days and nights, the average temperature is less than 5 degrees, may not carry on the external wall insulation, brick construction.
Q:Is sintering insulation brick good or concrete porous brick good?
As with the expansion screw, it depends on what to connect, and go in is no problem, the key is that the carrying capacity is not very high, if you do steel support, pull and so on, it is recommended to use concrete.
Q:What material is good for indoor thermal insulation?
Own home, if the south, hot summer and cold winter zone, with inorganic insulation mortar or polystyrene particles insulation mortar, the effect is very good;

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