Description
Silica 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.
Features:
1.Low bulk density,
2.Low thermal conductivity,
3.High apparent porosity,
4.Good thermal shock resistance,
5.Great high temperature mechanical strength,
6.High temperature stable volume change,
7.Strong acid slag erosion resistance.
Specification
| Items |
Silica Brick |
Silica Brick |
| Coke Oven |
Glass Furance |
| Al2O3 % |
≤1.5 |
≤0.5 |
| Fe2O3 % |
≤1.5 |
≤0.8 |
| SiO2 % |
≥94.5 |
≥96 |
| K2O+Na2O % |
CaO≤2.5 |
CaO≤2.5 |
| Refractoriness R ºC |
≥1650 |
≥1650 |
| Refractoriness under Load KD ºC |
KD≥1650 |
KD≥1650 |
| Permanent Linear Change % (1450ºC×2h) |
0~+0.2 |
0~+0.2 |
| Apparent Porosity % |
≤22 |
≤24 |
≤21 |
| Bulk density g/cm3 |
≤2.33 |
≤2.34 |
≤2.34 |
| Cold crushing strength Mpa |
≥40 |
≥35 |
≥35 |
| 0.2MPa creep rate % |
Residue Quartz ≤1.0% |
≤1.0% |
| Thermal Expansivity(1000ºC) |
≤1.28 |
≤1.30 |
/ |
| Application |
Bottom and Wall |
Regenerator Bottom and Wall |
Glass Furance |
FAQ
Q: Are you trading company or manufacturer?
A: We are manufacturer located in China. All our clients from home or abroad,are warmly welcomed to visit us.
Q: What is your advantages?
A: We are manufacturer,and we have professional production and processing and sales teams.Quality can be guaranteed.We have rich experience in ferroalloy field.
Q: What is your production capacity and delivery date ?
A: 3000MT/month&Shipped in 20 days after payment.
Q: Is the price negotiable?
A: Yes, please feel free to contact us anytime if you have any question . And for clients who wants to enlarge market, we will do our best to support.
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