Low-cement castable
Application Industry: Refractories for Industrial Furnace
Application Equipment: Industrial Furnace Preheat Area and Heating Area Lining
Size: Custom low-cement castable geometry per industrial furnace design (free engineering on request)
Products Overview
Our Low-cement castable is a high-performance refractory castable product engineered for industrial furnace preheat area and heating area lining service. This new generation of products is developed with high quality mullite and bauxite as the main raw material by adding proper corundum, compound ultra-fine powders and efficient dispersion additives, and characterized with good performance at high temperature as well as high strength, low porosity and low thermal insulation for industrial furnace service.
The Low-cement castable product family is offered in five engineering-proven LCJ chemistry grades. The CH-LCJ50 grade features Al2O3 content minimum 50% for general demand industrial furnace service, with Bulk Density minimum 2.3 g/cm3 after 110 °C drying for 24 hours, Cold Crushing Strength minimum 30 MPa after 110 °C drying for 24 hours and minimum 40 MPa after 1300 °C firing for 3 hours, Permanent Linear Change maximum 0.5 percent after 1300 °C firing for 3 hours, Water Requirement 6-7 percent, and Maximum Service Temperature 1350 °C. The CH-LCJ60 grade features Al2O3 content minimum 60% for higher-demand industrial furnace service, with Bulk Density minimum 2.35 g/cm3, Cold Crushing Strength minimum 35 MPa after 110 °C drying for 24 hours and minimum 40 MPa after 1400 °C firing for 3 hours, Permanent Linear Change maximum 0.5 percent after 1400 °C firing for 3 hours, Water Requirement 6-7 percent, and Maximum Service Temperature 1400 °C. The CH-LCJ65 grade features Al2O3 content minimum 65% for high-demand industrial furnace service, with Bulk Density minimum 2.40 g/cm3, Cold Crushing Strength minimum 35 MPa after 110 °C drying for 24 hours and minimum 45 MPa after 1400 °C firing for 3 hours, Permanent Linear Change maximum 0.5 percent after 1400 °C firing for 3 hours, Water Requirement 6-7 percent, and Maximum Service Temperature 1400 °C. The CH-LCJ70 grade features Al2O3 content minimum 70% for high-demand industrial furnace service, with Bulk Density minimum 2.50 g/cm3, Cold Crushing Strength minimum 40 MPa after 110 °C drying for 24 hours and minimum 45 MPa after 1400 °C firing for 3 hours, Permanent Linear Change maximum 0.5 percent after 1400 °C firing for 3 hours, Water Requirement 6-7 percent, and Maximum Service Temperature 1400 °C. The CH-LCJ75 grade features Al2O3 content minimum 75% for highest-demand industrial furnace service, with Bulk Density minimum 2.60 g/cm3, Cold Crushing Strength minimum 40 MPa after 110 °C drying for 24 hours and minimum 50 MPa after 1500 °C firing for 3 hours, Permanent Linear Change maximum 0.5 percent after 1500 °C firing for 3 hours, Water Requirement 6-7 percent, and Maximum Service Temperature 1500 °C.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Low-cement 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:
- Manufactured with high quality mullite and bauxite as main raw material by adding proper corundum, compound ultra-fine powders, and efficient dispersion additives
- Engineering-proven new generation refractory castable with good performance at high temperature as well as high strength, low porosity, and low thermal insulation
- Five LCJ chemistry grades covering Al2O3 content 50-75% for matching different industrial furnace service requirements
- Bulk Density minimum 2.3 to 2.6 g/cm3 and Cold Crushing Strength minimum 30 to 50 MPa depending on grade and curing/firing condition
- Water Requirement 6-7 percent and Maximum Service Temperature 1350 to 1500 °C depending on grade for industrial furnace service
Product Specification
Low-cement castable
This new generation of products is developed with high quality mullite and bauxite as the main raw material by adding proper corundum,compound ultra-fine powders and efficient dispersion additives, and characterized with good performance at high temperature as well as high strength, low porosity and low thermal insulation.
| Brands / Items | CH-LCJ50 | CH-LCJ60 | CH-LCJ65 | CH-LCJ70 | CH-LCJ75 | |
|---|---|---|---|---|---|---|
| Al2O3 (%) ≥ | 50 | 60 | 65 | 70 | 75 | |
| Bulk density (g/cm³) ≥ | 2.3 (110°C, 24h) | 2.35 (110°C, 24h) | 2.40 (110°C, 24h) | 2.50 (110°C, 24h) | 2.60 (110°C, 24h) | |
| Cold crushing strength (MPa) ≥ | 30 (110°C, 24h) 40 (1300°C, 3h) |
35 (110°C, 24h) 40 (1300°C, 3h) |
35 (110°C, 24h) 45 (1400°C, 3h) |
40 (110°C, 24h) 45 (1400°C, 3h) |
40 (110°C, 24h) 50 (1500°C, 3h) |
|
| Permanent linear change (%) | ±0.5 (1300°C, 3h) | ±0.5 (1400°C, 3h) | ±0.5 (1400°C, 3h) | ±0.5 (1400°C, 3h) | ±0.5 (1400°C, 3h) | |
| Water requirement (%) | 6-7 | 6-7 | 6-7 | 6-7 | 6-7 | |
| Max service temperature (°C) | 1350 | 1400 | 1400 | 1400 | 1500 | |
| Application | Roof, wall, and partition in the_ereheat area | Roof, walls, and partition in the heating area | ||||
Note: Seven performance parameters specified per source image: Al2O3, Bulk density, Cold crushing strength, Permanent linear change, Water requirement, Max service temperature, and Application. Five CH-LCJ chemistry grades engineered for industrial furnace service. For project-specific chemistry and grade, contact CH Refractories engineering.
Product Applications
Low-cement castable is a high-performance refractory castable product engineered for industrial furnace preheat area and heating area lining service. This new generation of products is developed with high quality mullite and bauxite as the main raw material by adding proper corundum, compound ultra-fine powders and efficient dispersion additives, and characterized with good performance at high temperature as well as high strength, low porosity and low thermal insulation for industrial furnace service.
Application Industry: Refractories for Industrial Furnace.
Target Equipment: Industrial Furnace Preheat Area and Heating Area Lining of small, medium-size, and large industrial furnace operations.
Specific Application Zones: The CH-LCJ50 grade (Al2O3 content minimum 50%) is the standard variant for general demand industrial furnace service, with Bulk Density minimum 2.3 g/cm3, Cold Crushing Strength minimum 30-40 MPa depending on curing/firing condition, and Maximum Service Temperature 1350 °C. The CH-LCJ60 grade (Al2O3 content minimum 60%) is the higher-demand variant, with Bulk Density minimum 2.35 g/cm3, Cold Crushing Strength minimum 35-40 MPa depending on curing/firing condition, and Maximum Service Temperature 1400 °C. The CH-LCJ65 grade (Al2O3 content minimum 65%) is the high-demand variant, with Bulk Density minimum 2.40 g/cm3, Cold Crushing Strength minimum 35-45 MPa depending on curing/firing condition, and Maximum Service Temperature 1400 °C. The CH-LCJ70 grade (Al2O3 content minimum 70%) is the high-demand variant, with Bulk Density minimum 2.50 g/cm3, Cold Crushing Strength minimum 40-45 MPa depending on curing/firing condition, and Maximum Service Temperature 1400 °C. The CH-LCJ75 grade (Al2O3 content minimum 75%) is the highest-demand variant, with Bulk Density minimum 2.60 g/cm3, Cold Crushing Strength minimum 40-50 MPa depending on curing/firing condition, and Maximum Service Temperature 1500 °C. All five grades deliver Permanent Linear Change maximum 0.5 percent after 1300-1500 °C firing for 3 hours and Water Requirement 6-7 percent for industrial furnace service. The low-cement castable product family is suitable for roof, wall, and partition in the preheat and heating area of industrial furnace service.
CH Refractories is a low-cement castable manufacturer in China, Henan, Zhengzhou. The complete low-cement 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.
