Silica Brick for Hot Blast Oven - Refractory Silica Brick
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 15 m.t.
- Supply Capability:
- 30000 m.t./month
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General Information
The CMAX super-duty silica bricks for glass melting tank is characterized by high purity, less impurity, good corrosion resistance, higher bulk density, complete phase transformation, lower residual quartz, high RUL, lower thermal expansion and stable volume at high temperature. This leads to increase in service life of glass furnace and reduction in energy consumption. These products have found wide application in crown and key areas and been highly appreciated by clients.
Features
1) A variety of specifications available.
2) Satisfy various technical request.
3) Lower medium spoilage.
4) Good insulation performance and high temperature resistance.
5) High compressive strength.
6) Used in all electric products and electric heating products.
7) OEM, ODM and OBM are welcomed.
Application
Glass melting tank
Glass furnace
Hot-Blast Stoves
Performance | |||||
Item | Unit | 95 Al2O3 | 96 Al2O3 | 99 Al2O3 | |
Physical Characteristics | Bulk density | g/cm3 | 3.6 | 3.6 | 3.9 |
Water absorption | % | 0 | 0 | 0 | |
Mechanical Characteristics | Flexural strength | Mpa | 320 | 340 | 360 |
Hardness Vickers | Gpa | 12.2 | 13.5 | 15.6 | |
Elastic modulus | Gpa | 280 | 320 | 370 | |
Poisson’s ratio | - | 0.22 | 0.23 | 0.23 | |
Thermal Characteristics | Linear expansion coefficient | (200C-5000C) 10-6/0C | 7.1 | 7.2 | 8 |
Thermal conductivity | w/(m.k) | 16 | 24 | 32 | |
Specific Heat | *10-3J/(kg*K) | 0.78 | 0.78 | 0.9 | |
Electrical Characteristics | Dielectric constant (1MHZ) | - | 9 | 9.4 | 9.9 |
Dielectric loss angle | *10-4 | 15 | 5 | 1 | |
Dielectric strength | *106V/m | 12 | 15 | 15 | |
Processing technology | |||||
Process range (mm) | |||||
Outside Diameter | 1---300 | ||||
Inside Diameter | 0.5---300 | ||||
Length | 0.5---1200 | ||||
Accuracy of working (mm) | |||||
Perpendicularity | 0.01 | ||||
Concentricity | 0.01 | ||||
Roundness | 0.005 | ||||
Straightness | 0.005 | ||||
Parallelism | 0.01 | ||||
Planeness | 0.005 | ||||
Roughness | 0.05 | ||||
Fit clearance | 0.005 | ||||
- Q: The hot blast stove when the temperature did not rise against the brick interface decreased
- Insulation of hot blast stove, key insulation silica brick hot stove, hot blast stove is shutdown or need repairing in blast furnace.
- Q: The specific content is what gb/t2608-2012 brick
- Quality assessment procedures, packaging, marking, transport, storage, and quality certificates. Suitable for siliceous refractory bricks.
- Q: Such purpose and scope please give me detailed points thank you because I am learning stage
- Acidic silica brick refractory material, has good acid resistance and slag erosion, softening temperature is as high as 1640 to 1670 DEG C, in the long-term use volume is relatively stable under high temperature. The silica mineral phase is mainly composed of tridymite and cristobalite, there is a small amount of quartz and glass. Tridymite and cristobalite and quartz remaining at low temperature due to phase change, volume changes greatly, so the brick thermal stability at low temperature is very poor. In use, under 800 degrees Celsius, slowly heating and cooling, so as not to produce cracks. The use of temperature in blast furnace so should not be below 800 DEG on. The properties and process of silica crystal with SiO2 transformation is closely related, therefore, the proportion of it is one of the important quality indexes of silica brick. General requirements below 2.38, high quality silica brick should be less than 2.35. The true density is small, reflecting a large number of scale quartz and square quartz in the brick, the residual quartz is small, so the residual line expansion is small, and the strength is decreased in useThe raw materials for the manufacture of silica brick. The higher the SiO2 content of silica raw material, the higher the refractoriness. The most harmful impurities are Al2O3, K2O, Na2O and so on. They seriously reduce the refractoriness of refractory products. Brick with SiO2 content of not less than 96% of silica as raw materials, adding mineralizer (e.g. millscale, lime) and binder (such as molasses, sulfite pulp waste liquid), after mixing, molding, drying, sintering and other processes in the system.
- Q: What is the main material of silica brickIt's common, the kind we see so often!
- An acid refractory consisting mainly of quartz and square quartz and a small amount of residual quartz and glass.
- Q: What role does silica play in refractories?
- The natural mineral of silica is called quartz. In refractories, silica and siliceous refractory materials contain more silica. Silica is acidic at high temperature, and siliceous refractory can resist acid slag corrosion
- Q: How to judge the quality of brick, clay brick, high alumina brick furnace from the appearance?
- Mainly depends on the color and density of brick. Another black clay brick and brick with iron oxide formation and how much the size of bricks
- Q: Can iron oxide be used as refractory material?
- Is widely used in this area. Mentioned refractory material of high school textbooks generally refers to three two aluminum oxide (alumina), alumina is also used as a refractory material, refractory crucible, porcelain, artificial gemstones.
- Q: Can not use it two brick
- Acidic silica brick refractory material, has good ability in acid slag erosion
- Q: Why is the highest brick coke oven temperature measuring point temperature not exceeding 1450
- That is because the brick load softening point the maximum temperature is 1450 degrees.
- Q: Why in the production of the brick to detect the volume density
- Density is the property of material, different density of materials, density of the same kind of material is not up to standard, affecting performance.
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Silica Brick for Hot Blast Oven - Refractory Silica Brick
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 15 m.t.
- Supply Capability:
- 30000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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