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Tin Bath Roof Block
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Details
|
Items |
Sillimanite roof block |
Mullite roof block |
|
Al2O3 (%) |
≥55 |
≥60 |
|
Fe2O3 (%) |
≤0.8 |
≤0.6 |
|
R2O (%) |
≤0.8 |
≤0.8 |
|
Bulk Density/(g/cm3) |
≥2.30 |
≥2.5 |
|
Porosity / (%) |
≤20 |
≤20 |
|
Cold Crushing strength/(MPa) |
≥50 |
≥60 |
|
Refractoriness / (℃) |
≥1760 |
≥1790 |
|
Refractoriness under load at 0.2Mpa (℃) |
1450 |
1500 |
|
Thermal shock resistance in water at 1000℃ (cycle) |
≥25 |
≥25 |
The tin bath roof block is assembled of mullite or sillimanite hot face block together with efficient light weight mullite insulation bricks that withstand high temperature and atmosphere of the tin bath.
The thickness of the mullite or sillimanite hot facing block is 70mm, lightweight mullite brick (bulk density 0.8g/cm3) with a thickness of 225mm, which not only guarantees long-term operation at high temperature (1200℃), but also guarantees good thermal insulation performance, could meet the tin bath requirements of glass production process at high temperature under long-term safe operation.
The wide-end of the tin bath adopts mullite hot face block and lightweight mullite bricks, and the middle section and narrow-end adopts sillimanite hot face block and lightweight mullite insulation bricks.
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