Silica Bricks: it is a kind of acid refractory material mainly made of tridymite, christobalite and a small amount residual quartz and glass phase. Its silica dioxide content is more than 94%, having the characteristics of resistance to acid slag erosion, high temperature, high refractoriness under load, non-deformation under the high temperature for long time, but the heat stability low.
What are the properties of silica bricks for glass kiln?
Silica Bricks: it is a kind of acid refractory material mainly made of tridymite, christobalite and a small amount residual quartz and glass phase. Its silica dioxide content is more than 94%, having the characteristics of resistance to acid slag erosion, high temperature, high refractoriness under load, non-deformation under the high temperature for long time, but the heat stability low.
What’s the main properties of silica brick for glass kiln?
- The high temperature volume is stable, and the the furnace body will not be changed by the temperature fluctuation. Silica bricks have the characteristics of high refractoriness under load softening temperature and small creep rate, glass kiln can maintain the furnace body , stable structure.
- There is no pollution to the glass liquid. The major component of silica brick is SiO2,if there are the situation of chip off-falling or surface molten drop, it will not affect the quality of the glass liquid.
- Resistance to chemical erosion. The upper structure of the silica brick is eroded by R2O gas contained in glass batching and then it will form a layer of smooth metamorphic layer, so the erosion rate is low, play a protective role
- Small volume density, which can reduce the furnace weight.
The Manufacturer of Silica Bricks
The volume of the blast furnace is expanding constantly and the coke oven is developing to a large scale. The foreign chamber has reached more than 7m, 6m large volume coke oven in China is also very common,so the new requirements have been proposed of the silica brick for coke oven the coke ovens. Our company has developed a high thermal strength, low density, small thermal expansion rate, high content of tridymite o fsilica brick, meet the stability of coke oven and long service life requirements. Zhengzhou RongSheng Refractory Co., Ltd has produced and sold refractory material for many years, yeas of experience make us more professional, if you have any demand and question about silica brick for glass kiln, welcome you consult RS Refractory Company, we company will provide you with high quality refractory material and intimate service.
| Silica Refractory Brick | |||||
| Item/Index | QG-0.8 | QG-1.0 | QG-1.1 | QG-1.15 | QG-1.2 |
| SiO2 % | ≥88 | ≥91 | ≥91 | ≥91 | ≥91 |
| Bulk Density g/cm3 | ≤0.85 | ≤1.00 | ≤1.10 | ≤1.15 | ≤1.20 |
| Cold Crushing Strength Mpa | ≥1.0 | ≥2.0 | ≥3.0 | ≥5.0 | ≥5.0 |
| 0.2Mpa Refractoriness Under Load T0.6℃ | ≥1400 | ≥1420 | ≥1460 | ≥1500 | ≥1520 |
| Permanent Linear Change On Reheating % 1450℃*2h | 0~+0.5 | 0~+0.5 | 0~+0.5 | 0~+0.5 | 0~+0.5 |
| 20~1000℃ Thermal Expansion 10~6/℃ | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 |
| Thermal Conductivity (w/m*k) 350℃ | 0.55 | 0.55 | 0.6 | 0.65 | 0.7 |
