Common Silica Brick
Application Industry: Refractories for Industrial Furnace and Metallurgical Industry
Application Equipment: Industrial Furnace, Coke Oven, and Hot Blast Stove Combustion Chamber and Checker Regenerator
Size: Standard silica brick geometry (custom sizes and shapes available on request)
Products Overview
Our Common Silica Brick is a dense acid refractory product consisting mainly of tridymite, cristobalite, and a small amount of residual quartz and glass phases. The Common Silica Brick product family is engineered for industrial furnace, coke oven, and Hot Blast Stove combustion chamber lining service, with silica content range of 93 to 95 percent for high temperature stability.
The Common Silica Brick product family is offered in three chemistry grades (CH-GZ95, CH-GZ94, and GZ-93) covering a silica content range of 93% to 95% and a refractoriness range of 1690 to 1710%. CH-GZ95 is the highest-silica workhorse grade with cold crushing strength of 29.4 MPa or higher. CH-GZ94 is the mid-silica grade for less demanding lining service. GZ-93 is the cost-effective grade for cooler zone lining.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Common Silica Brick grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractories for the Steel Industry category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured from tridymite, cristobalite, and a small amount of residual quartz and glass phases for industrial furnace fireclay service
- Engineering-proven acid slag corrosion resistance and higher high temperature strength in industrial furnace service
- Load softening start temperature of 1620 to 1670 °C with long-term high temperature use without deformation
- Three chemistry grades covering silica content range 93 to 95 percent for matching different industrial furnace applications
- Natural silica raw material with appropriate mineralizer addition ensures quartz-to-scaly quartz conversion during slow calcination
Product Specification
Standard silica brick geometry is engineered per buyer’s industrial furnace and coke oven design. Custom sizes and shapes available on request.
| Items | Common Silica Brick | ||
|---|---|---|---|
| CH-GZ95 | CH-GZ94 | GZ-93 | |
| SiO2 content ≥ (%) | 95 | 94 | 93 |
| Refractoriness ≥ (°C) | 1710 | 1710 | 1690 |
| RUL 0.2 MPa ≥ (°C) | 1650 | 1620 | 1620 |
| Apparent Porosity ≤ (%) | 22 | 23 | 25 |
| Cold Crushing Strength ≥ (MPa) | 29.4 | 24.5 | 19.6 |
| Bulk Density ≥ (g/cm³) | 2.37 | 2.38 | 2.39 |
Note: Three chemistry grades CH-GZ95, CH-GZ94, and GZ-93 are Common Silica Brick products. The Thermal Shock Stability is inherently low (water heat exchange 1 to 4 cycles), reflecting the inherent low thermal shock behavior of silica bricks and the need for gradual heating in service. For project-specific chemistry, contact CH Refractories engineering.
Product Applications
Common Silica Brick is a dense acid refractory product manufactured from tridymite, cristobalite, and residual quartz and glass phases, engineered for industrial furnace, coke oven, and Hot Blast Stove combustion chamber lining service. The product family delivers SiO2 content of 93 to 95 percent, with acid slag corrosion resistance and high temperature strength.
Application Industry: Refractories for Industrial Furnace, Coke Oven, Hot Blast Stove, and broader Metallurgical Industry.
Target Equipment: Industrial Furnace Combustion Chamber, Coke Oven Sole Flue and Combustion Chamber, and Hot Blast Stove Combustion Chamber.
Specific Application Zones: The CH-GZ95 grade is the highest-silica workhorse for industrial furnace and coke oven combustion chamber positions requiring high refractoriness and load softening start temperature. The CH-GZ94 grade targets the intermediate temperature zones with acid slag corrosion resistance. The GZ-93 grade is the cost-effective option for cooler lining zones with lower apparent porosity requirement. All three grades deliver the same natural silica raw material with appropriate mineralizer addition ensuring quartz-to-scaly quartz conversion during slow calcination at 1350 to 1430 °C under reducing atmosphere.
CH Refractories is a Common Silica Brick manufacturer in China, Henan, Zhengzhou. The complete Common Silica Brick product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO refractory standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Refractories for the Steel Industry customers across the global iron and steel value chain.
