Light weight silica brick
Application Industry: Common Refractory Materials
Application Equipment: Industrial Furnace, Heat Insulation, and Weight Reduction Lining
Size: Custom light weight silica brick geometry per industrial furnace design (free engineering on request)
Products Overview
Our Light weight silica brick is a high-performance refractory product engineered for industrial furnace, heat insulation, and weight reduction lining service. Also known as silicon insulation bricks. A lightweight refractory material having a silica content of 91% or more and a bulk density of 1.2 g/cm3 or less. The refractoriness and load softening temperature are similar to those of ordinary silica bricks with the same composition. However, due to the large number of pores, the compressive strength, slag resistance, corrosion resistance, etc. are not as good as those of ordinary silica bricks, but the thermal shock resistance is improved.
The Light weight silica brick product family is offered in one engineering-proven QZ chemistry grade. The CH-QZ1.2 grade features SiO2 content minimum 91% for general industrial furnace heat insulation service, with Refractoriness minimum 1670 °C, Load Softening Start Temperature minimum 1520 °C at 0.1 MPa, Thermal Conductivity maximum 0.7 W/m.k at 350 °C plus or minus 10 °C, Cold Crushing Strength minimum 5 MPa, and Bulk Density 1.2 g/cm3. The grade adopts finely divided silica as raw material, with critical particle size typically not more than 1 mm, and the particles having less than 0.5 mm are not less than 90% for industrial furnace heat insulation and weight reduction service.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Light weight silica brick grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Common Refractory Materials category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured by Zhengzhou caihua with finely divided silica as raw material, with critical particle size typically not more than 1 mm and particles less than 0.5 mm not less than 90%
- Engineering-proven also known as silicon insulation bricks, with silica content 91% or more and bulk density 1.2 g/cm3 or less for industrial furnace heat insulation service
- One QZ chemistry grade covering SiO2 content minimum 91% and Refractoriness minimum 1670 °C for matching industrial furnace heat insulation service requirements
- Bulk Density 1.2 g/cm3 with Cold Crushing Strength minimum 5 MPa and Load Softening Start Temperature minimum 1520 °C for industrial furnace heat insulation service
- Suitable for various parts of the kiln that require heat insulation or light weight reduction, with maximum operating temperature 1200-1550 °C depending on material
Product Specification
Light weight silica brick
Also known as silicon insulation bricks. A lightweight refractory material having a silica content of 91% or more and a bulk density of 1.2 g/cm³ or less. The refractoriness and load softening temperature are similar to those of ordinary silica bricks with the same composition. However, due to the large number of pores, the compressive strength, slag resistance, corrosion resistance, etc. are not as good as those of ordinary silica bricks, but the thermal shock resistance is improved.
The finely divided silica is used as a raw material, and the critical particle size thereof is usually not more than 1 mm, and the particles having less than 0.5 mm are not less than 90%. A flammable substance is added to the furnish or a porous structure is formed by a gas generating method, and is obtained by firing. It can also be made into unfired products. It is mainly used in various parts of the kiln that require heat insulation or light weight reduction without direct contact with the melt, no corrosive gas, and no temperature change. It can not be used in contact with alkaline refractories when used at high temperatures. According to the material, the maximum operating temperature is 1200~1550°C.
| Brands / Items | CH-QZ1.2 | |
|---|---|---|
| SiO2 (%) | 91 | |
| Refractoriness (°C) ≥ | 1670 | |
| Load softening start temperature (°C) ≥ | 1520 (0.1MPa) | |
| Thermal conductivity (W/m.k) | ≤0.7 (350°C±10°C) |
|
| Normal temperature compressive strength (MPa) ≥ | 5 | |
| Bulk density (g/cm³) | 1.2 | |
Note: Six performance parameters specified per source image: SiO2, Refractoriness, Load softening start temperature, Thermal conductivity, Normal temperature compressive strength, and Bulk density. One CH-QZ chemistry grade engineered for industrial kiln heat insulation and light weight reduction lining service. For project-specific chemistry and grade, contact CH Refractories engineering.
Product Applications
Light weight silica brick is a high-performance refractory product engineered for industrial furnace, heat insulation, and weight reduction lining service. Also known as silicon insulation bricks. A lightweight refractory material having a silica content of 91% or more and a bulk density of 1.2 g/cm3 or less. The refractoriness and load softening temperature are similar to those of ordinary silica bricks with the same composition. However, due to the large number of pores, the compressive strength, slag resistance, corrosion resistance, etc. are not as good as those of ordinary silica bricks, but the thermal shock resistance is improved. The light weight silica brick product family is mainly used in various parts of the kiln that require heat insulation or light weight reduction, with stable quality and good engineering performance across the global common refractory materials value chain.
Application Industry: Common Refractory Materials.
Target Equipment: Industrial Furnace, Heat Insulation, and Weight Reduction Lining of small, medium-size, and large industrial operations across the global common refractory materials value chain.
Specific Application Zones: The CH-QZ1.2 grade (SiO2 content minimum 91%) is the standard variant engineered for general industrial furnace heat insulation and weight reduction lining service, with Refractoriness minimum 1670 °C, Load Softening Start Temperature minimum 1520 °C at 0.1 MPa, Thermal Conductivity maximum 0.7 W/m.k at 350 °C, Cold Crushing Strength minimum 5 MPa, and Bulk Density 1.2 g/cm3. The grade is suitable for various parts of the kiln that require heat insulation or light weight reduction without direct contact with the melt, no corrosive gas, and no temperature change, with stable quality and good engineering performance across the global common refractory materials value chain.
CH Refractories is a Light weight silica brick manufacturer in China, Henan, Zhengzhou. The complete Light weight 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 Common Refractory Materials customers across the global common refractory materials value chain.
