Refractory Fire Resistant Silica Brick
Definition:
Refractory Fire Resistant Silica Brick is made of quartz stone material, the content of SiO2 is above 93%. It has good resistance to acid slag and good heat conductivity. And the refractoriness is 1690~1710°C, RUL is beyond 1620°C.
SiO2 has different types of crystals in different temperatures, and the transform between the crystals will cause the change of the bulk. So there is a close contact between the changes of SiO2 crystals and the produce, performance and usage of silica bricks. During the heating, there will be changes of the bulk, and cristobalite changes most, then quartz, phosphorus quartz is the slowest of all and it also has good heat-conductivity.Coke oven should use the silica brick with small true density. And the phosphorus quartz is better than others.
Refractory Fire Resistant Silica 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 Refractory Material is higher than that of clay brick and high aluminum brick, reaching 1640 ~ 1670℃, which belongs to advanced refractory materials.
(2) Thermal conductivity:
Refractory Material has better thermal conductivity than clay brick and high aluminum brick
Application:
Refractory Material 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.
1). Gas cooker,Water heater,Gas oven, Gas boiler,Air-conditioning and so on.
2). As ceramic parts of flexible pad and channel heaters at operations of pre and postweld heat treatment; Welding process, stress-relieving, pre-heating & post heating, other resistance-heating environment
3). halogen lamps, high and low pressure uv lamps, mercury lamps, uv lamp holders and heating tubes.
4). high-power electrical applicance and all kinds of insulation device.
Product Description:
|
Refractory Material
|
|
Item
|
Unit
|
RG-95
|
JG-1
|
JG-2
|
|
SiO2
|
%
|
≥95
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≥94.5
|
≥94.5
|
|
Al2O3
|
%
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≤1.0
|
≤1.5
|
≤1.5
|
|
Fe2O3
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%
|
≤1.3
|
≤1.5
|
≤1.5
|
|
CaO
|
%
|
-
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≤2.5
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≤2.5
|
|
Apparent Porosity
|
%
|
≤22(24)
|
≤22
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≤24
|
|
Bulk Density
|
g/cm3
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≤2.32
|
-
|
-
|
|
Ture Bulk Density
|
g/cm3
|
-
|
≤2.33
|
≤2.34
|
|
Cold Crushing Strength
|
Mpa
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≥45(35)
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≥40
|
≥35
|
|
Residual Quartz
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%
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≤1.0
|
≤1.0
|
≤1.0
|
|
Refractoriness under load, T0.6
|
℃
|
≥1650
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≥1650
|
≥1650
|
|
Creep Rate(1550℃X50h ,0.2MPa)
|
%
|
≤0.8
|
-
|
-
|
|
Thermal conductivity,1000℃
|
%
|
≤1.25
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≤1.28
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≤1.3
|
|
Linear Change on Reheating(1450℃×2h)
|
%
|
-
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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.
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