Light weight castable
Application Industry: Refractories for Industrial Furnace
Application Equipment: Industrial Furnace Insulation Layer
Size: Custom light weight castable geometry per industrial furnace design (free engineering on request)
Products Overview
Our Light weight castable is a high-performance refractory castable product engineered for industrial furnace insulation layer service. Light weight castables are produced by Zhengzhou caihua with light weight raw materials, suitable binder and special additive as raw material and are characterized with good thermal insulation, easy installation and high strength for industrial furnace insulation service.
The Light weight castable product family is offered in seven engineering-proven QJ chemistry grades. The CH-QJ0.5 grade features Bulk Density 0.5±0.1 g/cm3 for lowest temperature industrial furnace insulation service, with Cold Crushing Strength minimum 1.5 MPa after 110 °C drying for 24 hours and minimum 1.5 MPa after 500 °C firing for 3 hours, Thermal Conductivity maximum 0.19 W/m.k at 800 °C hot side, and Maximum Service Temperature 700 °C. The CH-QJ0.6 grade features Bulk Density 0.7±0.1 g/cm3, with Cold Crushing Strength minimum 2.0 MPa and minimum 1.5 MPa after 600 °C firing, Thermal Conductivity maximum 0.22 W/m.k, and Maximum Service Temperature 800 °C. The CH-QJ1.0 grade features Bulk Density 1.0±0.1 g/cm3, with Cold Crushing Strength minimum 4.0 MPa and minimum 3.5 MPa after 800 °C firing, Thermal Conductivity maximum 0.27 W/m.k, and Maximum Service Temperature 1000 °C. The CH-QJ1.2 grade features Bulk Density 1.2±0.1 g/cm3, with Cold Crushing Strength minimum 6.0 MPa and minimum 5.0 MPa after 1000 °C firing, Thermal Conductivity maximum 0.45 W/m.k, and Maximum Service Temperature 1100 °C. The CH-QJ1.4 grade features Bulk Density 1.4±0.1 g/cm3, with Cold Crushing Strength minimum 7.0 MPa and minimum 6.0 MPa after 1100 °C firing, Thermal Conductivity maximum 0.50 W/m.k, and Maximum Service Temperature 1200 °C. The CH-QJ1.6 grade features Bulk Density 1.6±0.1 g/cm3, with Cold Crushing Strength minimum 8.0 MPa and minimum 7.0 MPa after 1200 °C firing, Thermal Conductivity maximum 0.70 W/m.k, and Maximum Service Temperature 1300 °C. The CH-QJ1.8 grade features Bulk Density 1.8±0.1 g/cm3, with Cold Crushing Strength minimum 8.0 MPa and minimum 7.0 MPa after 1200 °C firing, Thermal Conductivity maximum 0.80 W/m.k, and Maximum Service Temperature 1350 °C.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Light weight castable grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractories for Industrial Furnace category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Produced by Zhengzhou caihua with light weight raw materials, suitable binder and special additive as raw material
- Engineering-proven characterized with good thermal insulation, easy installation, and high strength for industrial furnace insulation service
- Seven QJ chemistry grades covering Bulk Density 0.5 to 1.8 g/cm3 for matching different industrial furnace insulation service requirements
- Bulk Density minimum 0.5 to 1.8 g/cm3 and Cold Crushing Strength minimum 1.5 to 8 MPa depending on grade and curing/firing condition
- Thermal Conductivity maximum 0.19 to 0.80 W/m.k and Maximum Service Temperature 700 to 1350 °C depending on grade for industrial furnace insulation service
Product Specification
Light weight castable
Light weight castables are produced by Zhengzhou caihua with light weight raw materials, suitable binder and special additive as raw materials and are characterized with good thermal insulation, easy installation and high strength.
| Brands / Items | CH-QJ0.5 | CH-QJ0.6 | CH-QJ1.0 | CH-QJ1.2 | CH-QJ1.4 | CH-QJ1.6 | CH-QJ1.8 |
|---|---|---|---|---|---|---|---|
| Bulk density (g/cm³) | 0.5±0.1 (110°C, 24h) |
0.7±0.1 (110°C, 24h) |
1.0±0.1 (110°C, 24h) |
1.2±0.1 (110°C, 24h) |
1.4±0.1 (110°C, 24h) |
1.6±0.1 (110°C, 24h) |
1.8±0.1 (110°C, 24h) |
| Cold crushing strength (MPa) | ≥1.5 (110°C, 24h) ≥1.5 (500°C, 3h) |
≥2.0 (110°C, 24h) ≥1.5 (600°C, 3h) |
≥4.0 (110°C, 24h) ≥3.5 (800°C, 3h) |
≥6.0 (110°C, 24h) ≥5.0 (1000°C, 3h) |
≥7.0 (110°C, 24h) ≥6.0 (1100°C, 3h) |
≥8.0 (110°C, 24h) ≥7.0 (1200°C, 3h) |
≥8.0 (110°C, 24h) ≥7.0 (1200°C, 3h) |
| Thermal conductivity (W/m.k) | ≤0.19 (Hot side 800°C) |
≤0.22 (Hot side 800°C) |
≤0.27 (Hot side 800°C) |
≤0.45 (Hot side 800°C) |
≤0.50 (Hot side 800°C) |
≤0.70 (Hot side 800°C) |
≤0.80 (Hot side 800°C) |
| Max service temperature (°C) | 700 | 800 | 1000 | 1100 | 1200 | 1300 | 1350 |
Note: Four performance parameters specified per source image: Bulk density, Cold crushing strength, Thermal conductivity, and Max service temperature. Seven CH-QJ chemistry grades engineered for industrial furnace insulation service. For project-specific chemistry and grade, contact CH Refractories engineering.
Product Applications
Light weight castable is a high-performance refractory castable product engineered for industrial furnace insulation layer service. Light weight castables are produced by Zhengzhou caihua with light weight raw materials, suitable binder and special additive as raw material and are characterized with good thermal insulation, easy installation and high strength for industrial furnace insulation service.
Application Industry: Refractories for Industrial Furnace.
Target Equipment: Industrial Furnace Insulation Layer of small, medium-size, and large industrial furnace operations.
Specific Application Zones: The CH-QJ0.5 grade (Bulk Density 0.5±0.1 g/cm3) is the lowest temperature variant for industrial furnace insulation service, with Cold Crushing Strength minimum 1.5 MPa, Thermal Conductivity maximum 0.19 W/m.k, and Maximum Service Temperature 700 °C. The CH-QJ0.6 grade (Bulk Density 0.7±0.1 g/cm3) is for industrial furnace insulation service, with Cold Crushing Strength minimum 2.0 MPa, Thermal Conductivity maximum 0.22 W/m.k, and Maximum Service Temperature 800 °C. The CH-QJ1.0 grade (Bulk Density 1.0±0.1 g/cm3) is the standard variant, with Cold Crushing Strength minimum 4.0 MPa, Thermal Conductivity maximum 0.27 W/m.k, and Maximum Service Temperature 1000 °C. The CH-QJ1.2 grade (Bulk Density 1.2±0.1 g/cm3) is the medium variant, with Cold Crushing Strength minimum 6.0 MPa, Thermal Conductivity maximum 0.45 W/m.k, and Maximum Service Temperature 1100 °C. The CH-QJ1.4 grade (Bulk Density 1.4±0.1 g/cm3) is the higher-demand variant, with Cold Crushing Strength minimum 7.0 MPa, Thermal Conductivity maximum 0.50 W/m.k, and Maximum Service Temperature 1200 °C. The CH-QJ1.6 grade (Bulk Density 1.6±0.1 g/cm3) is the higher-demand variant, with Cold Crushing Strength minimum 8.0 MPa, Thermal Conductivity maximum 0.70 W/m.k, and Maximum Service Temperature 1300 °C. The CH-QJ1.8 grade (Bulk Density 1.8±0.1 g/cm3) is the highest-demand variant, with Cold Crushing Strength minimum 8.0 MPa, Thermal Conductivity maximum 0.80 W/m.k, and Maximum Service Temperature 1350 °C. All seven grades are suitable for industrial furnace insulation layer service with good thermal insulation, easy installation, and high strength.
CH Refractories is a Light weight castable manufacturer in China, Henan, Zhengzhou. The complete Light weight castable 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 Industrial Furnace customers across the global industrial furnace value chain.
