1. High purity raw materials, low impurity content.
2. Strict production craft control.
3. True density is below 2.35g/cm3, small residual expansion rate.
4. Various species of silica bricks can be customized.
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8615038278221E-mail：
info@rsrefractories.comSilica bricks, as the name suggests, are mainly composed of SiO2( mass percent is above 93%). High temperature performance of silica bricks mainly depends on SiO2 content, impurity content, mineral composition and so on. The higher SiO2 content, the higher refractoriness of Silica bricks. Mineral composition of silica bricks are tridymite, cristobalite, residue quartz and glass phase. Silica bricks properties are closed related to SiO2 crystalline phase transformation.
Coke furnace silica bricks physiochemical indexes
|
Item |
JLGZ-1 |
JLGZ-2 |
JLGZ-3 |
JLGZ-4 |
|
SiO2 % ≥ |
94.6 |
95.38 |
95.6 |
96.0 |
|
Fe2O3 % ≤ |
1.12 |
1.13 |
0.27 |
0.40 |
|
Al2O3 % |
0.75 |
0.70 |
0.89 |
0.90 |
|
0.2Mpa refractoriness under load ℃ |
1640 |
1655 |
1671 |
1660 |
|
Apparent porosity % ≤ |
22.6 |
17.5 |
22.8 |
19.4 |
|
Cold crushing strength Mpa |
59.0 |
80.0 |
27.5 |
60.0 |
|
True density g/m3 |
2.31 |
2.32 |
2.33 |
/ |
|
Bulk density g/cm3 |
1.79 |
1.91 |
1.79 |
1.85 |
|
Linear change rate % |
1.18 |
1.18 |
1.26 |
1.30 |
Glass furnace silica bricks physiochemical indexes
|
Item |
BG-96a |
BG-96b |
BG-95a |
BG-95b |
|
SiO2 % ≥ |
96 |
96 |
95 |
95 |
|
Fe2O3 % ≤ |
0.8 |
1.0 |
1.2 |
1.2 |
|
0.2Mpa refractoriness under load ℃ |
≥1680 |
≥1670 |
≥1660 |
≥1650 |
|
Apparent porosity % ≤ |
22 |
22 |
22 |
22 |
|
Cold crushing strength Mpa |
35 |
35 |
35 |
35 |
|
True density g/m3 |
≤2.34 |
≤2.34 |
≤2.35 |
≤2.35 |
Coke Furnace Silica Bricks
Coke furnace silica bricks primary crystalline phase is tridymite. Silica bricks account for 60%~70% the total amount of refractory materials used in modern coke furnaces. The main application parts of silica bricks are regenerator wall, ramp, combustion chamber, carbonization chamber, furnace top and so on.
Coke furnace silica bricks properties
high refractoriness under load.
High thermal conductivity.
Good thermal shock resistance.
Good high temperature volume stability.
Glass furnace silica bricks
Glass furnace silica bricks main composition is tridymite, they are used to line glass tank furnace high temperature part. Glass furnace silica bricks feature in: good high temperature volume stability, won’t cause furnace deformation due to temperature fluctuation, won’t pollute glass liquid, strong resistance to chemical corrosion, low volume density and so on.
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