Silica brick with SiO₂≥94%, refractoriness ≥1690℃ and RUL ≥1620℃ shows no high-temperature shrinkage, stable under long-term load and resistant to acid slag and atmospheres—the recommended choice for coke ovens.
| SiO₂ Content | ≥94% |
|---|---|
| Refractoriness | ≥1690℃ |
| RUL (0.2MPa) | ≥1620℃ |
| Apparent Porosity | ≤22% |
| CCS | ≥35 MPa |
Silica bricks use quartzite as the main raw material: SiO₂ ≥94%, refractoriness ≥1690℃, load softening point ≥1620℃ and apparent porosity ≤22%. No high-temperature shrinkage, high load softening point and acid slag resistance make them the dedicated material for coke oven chambers and glass furnace crowns. It is Henan Songrui's professional grade for coking and glass industries.
Silica bricks require the dedicated heat-up curve, never rapid cooling/heating or long basic-atmosphere attack; use for acid slag and hot load-bearing zones, magnesia bricks for basic slag.
Lay with silica mortar; follow the dedicated silica heat-up schedule with holding through low-temperature inversion stages. Heat-up support available.
Henan Songrui New Refractory Materials Co., Ltd. (Xuanhua Town Industrial Park, Henan) is a 2024 Class A taxpayer and SRDI SME. For selection, quotation or installation, contact Manager Zheng (17513376789 / 17513376789@163.com).
Silica brick is the primary refractory for coke ovens:
Coke oven chamber walls, combustion chambers, roofs, and glass furnace crowns requiring high load softening point.
Quartz polymorphic changes near 573℃ and 870℃ cause volume jumps; slow heat-up is mandatory to avoid cracking.
Up to about 1650℃ with load softening above 1620℃, for coke ovens and glass crowns.
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