Description Of Mullite Insulation Bricks:
The light weight mullite insulation 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.
Performance Mullite Insulating Firebrick:
The refractoriness is high, can reach to more than 1790 degrees centigrade. The RUL is 1600~1700 degrees C. The compressive strength at normal temperature is 70 ~ 260MPa. The thermal shock resistance is good. There are two kinds of mullite bricks: sinterted mullite and fused mullite brick.
Characteristics of Mullite Insulating Firebrick:
The main material of sintered mullite brick is high alumina bauxite as the main raw material, adding a small amount of clay or raw bauxite as binder, it is made by molding and sintering. Fused mullite brick with high bauxite, commercial alumina and refractory clay as raw material, adding charcoal or coke fines as a reducing agent, after molding, can adopt the reduction electrofusion method to manufacture. The crystallization of the electric cast mullite is larger than that of the sintered mullite, and the thermal shock resistance is better than that of the sintered product. Their high temperature performance mainly depends on the content of alumina oxide and the uniformity of the distribution of mullite and glass.
Mullite Insulation Brick Specification:
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Item
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Specification
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||||
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JM23
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JM25
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JM26
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JM27
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||
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Al2O3 %
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≥40
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≥50
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≥55
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≥60
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|
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Fe2O3 %
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≤1.0
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≤1.0
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≤0.9
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≤0.8
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|
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Bulk Density, g/cm3
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≤0.55
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≤0.80
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≤0.85
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≤0.9
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|
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CCS, MPa
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≥1.0
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≥1.5
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≥2.0
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≥2.5
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|
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PLC, %
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1230ºC×12h
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1350ºC×12h
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1400ºC×12h
|
1450ºC×12h
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|
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-1.5~0.5
|
|||||
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Thermal Conductivity, W/(m·K)
|
200±25ºC
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≤0.18
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≤0.26
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≤0.28
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≤0.32
|
|
350±25ºC
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≤0.20
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≤0.28
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≤0.30
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≤0.32
|
|
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600±25ºC
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≤0.22
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≤0.30
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≤0.33
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≤0.36
|
|
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0.05MPa RUL, T0.5 ºC
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≥1080
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≥1200
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≥1250
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≥1300
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|
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Item
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Specification
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|||
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JM28
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JM30
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JM32
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||
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Al2O3 %
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≥65
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≥70
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≥77
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|
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Fe2O3 %
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≤0.7
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≤0.6
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≤0.5
|
|
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Bulk Density, g/cm3
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≤0.95
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≤1.05
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≤1.35
|
|
|
CCS, MPa
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≥2.5
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≥3.0
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≥3.5
|
|
|
PLC, %
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1510ºC×12h
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1620ºC×12h
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1730ºC×12h
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|
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-1.5~0.5
|
||||
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Thermal Conductivity, W/(m·K)
|
200±25ºC
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≤0.35
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≤0.42
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≤0.56
|
|
350±25ºC
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≤0.37
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≤0.44
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≤0.60
|
|
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600±25ºC
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≤0.39
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≤0.46
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≤0.64
|
|
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0.05MPa RUL, T0.5 ºC
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≥1360
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≥1470
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≥1570
|
|
Mullite insulation bricks refractory material can be used in linings or heat-insulating materials of the industries, such as, ethylene pyrolysis furnaces, tubular furnaces,reforming furnaces of synthetic ammonia, gas generators and high-temperature shullte kilns, etc.
• Aluminium anode bake furnaces, primary electrolytic cells, holding and melting furnaces and secondary remelt furnaces
• Petrochemical heaters, flues, refining vessels and reactor chambers
• Iron and steel industry hot blast furnace stoves, hot blast main and bustle pipe, heat treatment and galvanizing furnaces
• Ceramic industry, including kilns for domestic and laboratory use
• Glass industry
• Hot Face and Backup insulation in industrial furnaces
Q1. Are you Manufacturer?
A: Yes, of course, our factory is in Xinmi,zhengzhou city,Henan province.
Q2. Can we visit your company?
A: Sure,welcome at any time,seeing is believing.
Q3. Do you accept OEM?
A: Yes, we can do OEM.
Q4. What's the MOQ of trial order?
A: No limit,We can offer the best suggestions and solutions according to your condition.
Q5. What are the payment terms?
A: Usually T/T,but L/C,Western Union etc are available for us.
Q6. How long is delivery time?
A: The delivery time will be determined according to the quantity of the order.
Q7. How are your products' quality?
A: The products will be strictly inspected before shipment, so the quality could be guaranteed.
Q8 How about your company's certification?
A: ISO9001 and Test Report,also we could apply other necessary certification.