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White Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick
Definition:
White Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick belongs to acid refractory material, has good ability of resisting acid slag erosion, the softening temperature of load is as high as 1640 ~ 1670℃, the volume of long-term use is relatively stable under high temperature.
TheWhite Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick is mainly an acid refractory material composed of scale quartz, calcite and a small amount of residual quartz and glass phase.
The silica content of White Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick is above 94%.True density 2.35g/cm3.It is resistant to acid slag. Higher high temperature strength. High refractoriness under load. In high temperature for a long time without deformation. Low thermal shock stability. Using natural silica as raw material, with appropriate amount of mineralization agent, to promote the conversion of quartz in the billet to scale quartz.
White Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick is slowly fired at 1350 ~ 1430℃ in reducing atmosphere. When heated to 1450℃, about 1.5~2.2% of the total volume expansion, the residual expansion will make the cut joints close, to ensure that the masonry has good air tightness and structural strength.
Advantage:
(1) Refractoriness under load:
The refractoriness under load of White Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick is higher than that of clay brick and high aluminum brick, reaching 1640 ~ 1670℃, which belongs to advanced refractory materials.
(2) Thermal conductivity:
White Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick has better thermal conductivity than clay brick and high aluminum brick
Application:
White Mullite Low Coefficient Of Thermal Expansion for Refractory insulation brick is mainly used for the partition of coking chamber and combustor of coke making furnace, regenerator chamber and cinder chamber of steelmaking open hearth furnace, soaking pit, refractory material of glass melting furnace and sintering furnace of ceramics and other kiln vault and other load-bearing parts.
It is also used for high temperature load bearing parts of hot blast furnace and acid open hearth furnace top.
Product Description:
Refractory Material | ||||
Item | Unit | RG-95 | JG-1 | JG-2 |
SiO2 | % | ≥95 | ≥94.5 | ≥94.5 |
Al2O3 | % | ≤1.0 | ≤1.5 | ≤1.5 |
Fe2O3 | % | ≤1.3 | ≤1.5 | ≤1.5 |
CaO | % | - | ≤2.5 | ≤2.5 |
Apparent Porosity | % | ≤22(24) | ≤22 | ≤24 |
Bulk Density | g/cm3 | ≤2.32 | - | - |
Ture Bulk Density | g/cm3 | - | ≤2.33 | ≤2.34 |
Cold Crushing Strength | Mpa | ≥45(35) | ≥40 | ≥35 |
Residual Quartz | % | ≤1.0 | ≤1.0 | ≤1.0 |
Refractoriness under load, T0.6 | ℃ | ≥1650 | ≥1650 | ≥1650 |
Creep Rate(1550℃X50h ,0.2MPa) | % | ≤0.8 | - | - |
Thermal conductivity,1000℃ | % | ≤1.25 | ≤1.28 | ≤1.3 |
Linear Change on Reheating(1450℃×2h) | % | - | 0~0.3 | 0~0.3 |
Packaging and shipping
Standard packing: waterproof inner packing + outer packing suitable for container transportation
Why choose us
Q: Are you trading company or manufacturer?
A: We are Manufacturer of refractory materials that have 4 plants in China; So we can provide you with high quality products at more competitive prices. we can provide you professional solutions about your problems. Although our salesman cannot reply you immediately, pls leave your email or phone number, we can let our technician directly help you ASAP.
Q: Do you accept OEM?
A: Sure, we can do OEM for much kind of brick.
Q: What information do we need to provide?
A: If you are clear about the products you purchased, please send us the brick drawings, index(include chemical and physical indicators )and order quantity.
If you are not familiar with it, please tell us the usage and working temperature, we will recommend the product to you.
Q: How long is delivery time?
A: The delivery time will be determined according to the quantity of the order. Our monthly output is 12000tons. We have good connection with shipping company, agency, as well as the local custom and port authority. making sure we deliver on time.
Q: When can I get the price?
A: We usually quote within 24 hours after getting your detailed requirements, like size, quantity etc. If it is an urgent order, you can call us directly.
Q:What is the HS code?
A:The HS code is 69022000.
Q:Is there any cost for the sample?
A: We provide free sample(Less 3 pcs) but don't bear the freight.
Q: What is the Warranty for the fire brick?
A: For all the brick, we have 1 years warranty. If any quality problems on our side occurred in this period, we will take on the shipping cost and replacement.
