Silica Brick for Glass Furnace
- 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 silica brick can be widely used in coke oven, hot blast furnace, glass furnace and carbon furnace. In glass industry, it is mainly employed to build the doghouse crown, suspended wall of channel, top crown and inlet sealing. In metallurgy industry, it is adopted as the nozzle brick.
Features
1.High purity
2.Long service life
3.Accurate size tolerance
4.Pure color
5. Luster appearance
6..Good thermal conductivity
7.Good creep resistance
Applications
1. Doghouse crown, suspended wall of channel, top crown and inlet sealing of glass furnace
2. High temperature part of coke oven.
Physical and chemical index
Item | BG-94 | BG-95 | BG-96A | BG-96B | |
Chemical composition | SiO2 | ≥94 | ≥95 | ≥96 | ≥96 |
Fe2O3 | ≤1.5 | ≤1.5 | ≤0.8 | ≤0.7 | |
Al2O3+TiO2+R2O | ≤1.0 | ≤0.5 | ≤0.7 | ||
Refractoriness °C | 1710 | 1710 | 1710 | 1710 | |
Apparent Porosity% | ≤22 | ≤21 | ≤21 | ≤21 | |
Bulk Density g/cm3 | ≥1.8 | ≥1.8 | ≥1.8 | ≥1.8 | |
True Density,g/cm3 | ≤2.38 | ≤2.38 | ≤2.34 | ≤2.34 | |
Cold Crushing Strength Mpa | ≥24.5 | ≥29.4 | ≥35 | ≥35 | |
0.2Mpa Refractoriness Under Load T0.6 °C | ≥1630 | ≥1650 | ≥1680 | ≥1680 | |
Permanent Linear Change On Reheating (%)1500°CX2h | 0~+0.3 | 0~+0.3 | 0~+0.3 | 0~+0.3 | |
20-1000°C Thermal Expansich10-6/°C | 1.25 | 1.25 | 1.25 | 1.25 | |
Thermal Conductivity (W/MK) 1000°C | 1.74 | 1.74 | 1.44 | 1.44 | |
- Q: The hot blast stove when the temperature did not rise against the brick interface decreased
- How to keep the brick masonry temperature not lower than 600 DEG C, while the exhaust temperature is not higher than 400 DEG C.
- Q: The introduction of silica brick
- An acid refractory consisting mainly of quartz and square quartz and a small amount of residual quartz and glass.More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance. Higher high temperature strength. The softening start temperature is 1620~1670 degrees. Long term use at high temperature without deformation. The thermal shock resistance is low (the heat exchange in water is 1~4 times). The natural silica is used as the raw material, and a proper amount of mineralizer is used to promote the transformation of quartz into quartz in the body. Slowly sintered at 1350~1430 DEG C in the reducing atmosphere. When heating up to 1450 degrees, the total volume of 1.5~2.2% expands, and the residual expansion can close the kerf and ensure the airtight and structural strength of the masonry.
- Q: The difference between clay refractory bricks and refractory brick in the application.
- The ability of alkali resistance is poor, the thermal shock stability is the worst, and it is scrapped at one time. The brick is generally used in the coke oven, glass kiln. Other industries basically do not use.
- Q: What is acid refractory?
- Acid refractory material usually refers to refractories with SiO2 content greater than 93%. Its main characteristic is that it can resist acid slag corrosion at high temperature, but it is easy to react with alkaline slag.
- Q: Glass kiln brick for physical and chemical indicators?
- Glass kiln with high quality silica brick with silicon oxide content, low melt index, mainly used for glass kiln crown, parapet, wall hanging, small furnace arch superstructure and regenerator.
- Q: Why is the three oxidation of two silicon is very harmful impurities in silica brick
- Heating calcination is the best way to extend this sort of impurity removal. Remove impurities
- Q: Common bond brick?
- Lime should contain a lot of active CaO, I decompose CaCO3 and MgCO3 not more than 5%, Al2O3+Fe2O3+SiO2 no more than 5%. When the content of large particles, burned Ca-CO3 and over burned lime, the product produced caves, affecting the quality of products.
- Q: What are the main constituents of refractory bricks?
- (a) containing refractory brick brick, refers to more than SiO293%, is the main varieties of acid resistant brick. It is mainly used for coke oven building, also used in furnaces all kinds of glass, ceramic and carbon calciner, refractory brick arches and other load-bearing parts, is also used in high temperature bearing part of hot blast stove, but should not be used in thermal equipment below 600 DEG C and the temperature fluctuation in the.
- Q: The chemical composition of silica brick and its physicochemical index?
- ????Al2O3 SiO2??????fe2o3??????cao???????r2o93～98?0.5～2.5?；；?0.3～2.5??0.2～2.7；??1～1.5；
- Q: The difference between clay refractory bricks and refractory brick in the application.
- Brick bearing soft temperature and close to the melting point, high temperature strength, can be in high temperature (above 1400 degrees) under the condition of long-term use, but the anti alkali erosion ability, thermal shock stability is the worst, a scrap. The brick is generally used in the coke oven, glass kiln. Other industries basically do not use.
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Silica Brick for Glass Furnace
- 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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