Refractory cement
Application Industry: Refractory Raw Materials
Application Equipment: Refractory Castable Binder, Industrial Furnace Lining, and High Temperature Joints
Size: Custom refractory cement geometry per raw material processing design (free engineering on request)
Products Overview
Our Refractory cement is a high-performance refractory raw material product engineered for refractory castable binder, industrial furnace lining, and high temperature joints service. Refractory cement, also known as aluminate cement, is a kind of cement which is made from bauxite and limestone. Aluminate cement is often yellow or brown, but also gray. The main minerals of aluminate cement are calcium aluminate (CaO·Al2O3, CA) and other aluminate, as well as a small amount of calcium silicate (2 CaO·SiO2). The color is mostly grey and white for refractory product manufacturing service.
The Refractory cement product family is offered in four engineering-proven chemistry grades. The A600 grade features Al2O3 content minimum 50% for general refractory castable binder service, with SiO2 content maximum 7.8 percent, Fe2O3 content maximum 2.5 percent, R2O content maximum 0.4 percent, S content maximum 0.1 percent, Cl content maximum 0.1 percent, Specific Surface minimum 300 m2/kg, Setting Time initial minimum 45 minutes and final maximum 360 minutes, Cold Modulus of Rupture minimum 6 MPa at 24 hour and 7 MPa at 72 hour, Cold Crushing Strength minimum 45 MPa at 24 hour and 55 MPa at 72 hour. The A700 grade features Al2O3 content 50-60% for higher-demand refractory castable binder service, with SiO2 content maximum 7.5 percent, Fe2O3 content maximum 2.5 percent, R2O content maximum 0.4 percent, S content maximum 0.1 percent, Cl content maximum 0.1 percent, Specific Surface minimum 320 m2/kg, Setting Time initial minimum 60 minutes and final maximum 360 minutes, Cold Modulus of Rupture minimum 6.5 MPa at 24 hour and 7.5 MPa at 72 hour, Cold Crushing Strength minimum 55 MPa at 24 hour and 65 MPa at 72 hour. The A900 grade features Al2O3 content minimum 53.5% for high-demand refractory castable binder service, with SiO2 content maximum 5.5 percent, Fe2O3 content maximum 2.5 percent, R2O content maximum 0.4 percent, S content maximum 0.1 percent, Cl content maximum 0.1 percent, d50 11-14 µm, -45µm maximum 8.0 percent, Specific Surface minimum 350 m2/kg, Setting Time initial minimum 90 minutes and final maximum 360 minutes, Cold Modulus of Rupture minimum 8 MPa at 24 hour and 10 MPa at 72 hour, Cold Crushing Strength minimum 72 MPa at 24 hour and 82 MPa at 72 hour. The CA-70 grade features Al2O3 content 68.5-70.5% for highest-demand refractory castable binder service, with SiO2 content maximum 0.5 percent, Fe2O3 content maximum 0.2 percent, CaO content 28.5-30.5 percent, MgO content maximum 0.4 percent, R2O content maximum 0.4 percent, Setting Time initial 120-180 minutes and final 150-240 minutes, Cold Modulus of Rupture 7.5-10 MPa at 24 hour and 10-12 MPa at 72 hour, Cold Crushing Strength 40-50 MPa at 24 hour and 45-55 MPa at 72 hour.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Refractory cement grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractory Raw Materials category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured by Zhengzhou caihua with bauxite and limestone as main raw materials, calcined to obtain clinker with calcium aluminate as main component and Al2O3 content approximately 50%, then ground into hydraulic cementitious material
- Engineering-proven characterized with high refractoriness, high strength, and rapid hardening for refractory castable binder and industrial furnace lining service
- Four A600/A700/A900/CA-70 chemistry grades covering Al2O3 content 50-70.5% and Cold Crushing Strength 24 hour minimum 40-72 MPa for matching different refractory product manufacturing service requirements
- Setting Time initial 45-180 minutes and final 150-360 minutes with specific surface minimum 300-350 m2/kg depending on grade for refractory raw material service
- Mainly used as hydraulic binder for refractory castable, monolithic refractories, and high temperature joint material for various industrial furnace applications
Product Specification
Refractory cement
Refractory cement, also known as aluminate cement, is a kind of cement which is made from bauxite and limestone. Aluminate cement is often yellow or brown, but also gray. The main minerals of aluminate cement are calcium aluminate (CaO · Al2O3, CA) and other aluminate, as well as a small amount of calcium silicate (2 CaO · SiO2). the color is mostly grey and white.
| Brands / Items | A600 | A700 | A900 | CA-70 | |
|---|---|---|---|---|---|
| Chemical Composition (%) | Al2O3 | ≥50 | 50-60 | ≥53.5 | 68.5-70.5 |
| SiO2 | ≤7.8 | ≤7.5 | ≤5.5 | ≤0.5 | |
| Fe2O3 | ≤2.5 | ≤2.5 | ≤2.5 | ≤0.2 | |
| CaO | – | – | – | 28.5-30.5 | |
| MgO | – | – | – | ≤0.4 | |
| R2O | ≤0.4 | ≤0.4 | ≤0.4 | ≤0.4 | |
| S | ≤0.1 | ≤0.1 | ≤0.1 | – | |
| Cl | ≤0.1 | ≤0.1 | ≤0.1 | – | |
| d50 (μm) | – | – | – | 11-14 | |
| -45μm (%) | – | – | – | ≤8.0 | |
| Specific Surface (m²/kg) | ≥300 | ≥320 | ≥350 | – | |
| Setting time(h:min) | Initial setting time (min) | ≥45 | ≥60 | ≥90 | 120-180 |
| Final Setting (min) | ≤360 | ≤360 | ≤360 | 150-240 | |
| Cold Modulus of Rupture (MPa) | 24 hour | ≥6 | ≥6.5 | ≥8 | 7.5-10 |
| 72 hour | ≥7 | ≥7.5 | ≥10 | 10-12 | |
| Cold Crushing Strength(Mpa) | 24 hour | ≥45 | ≥55 | ≥72 | 40-50 |
| 72 hour | ≥55 | ≥65 | ≥82 | 45-55 | |
Note: Seven performance parameters specified per source image: Chemical Composition, d50, -45μm, Specific Surface, Setting time, Cold Modulus of Rupture, and Cold Crushing Strength. Four A600/A700/A900/CA-70 chemistry grades engineered for refractory cement service. For project-specific chemistry and grade, contact CH Refractories engineering.
Product Applications
Refractory cement is a high-performance refractory raw material product engineered for refractory castable binder, industrial furnace lining, and high temperature joints service. Refractory cement, also known as aluminate cement, is a kind of cement which is made from bauxite and limestone. Aluminate cement is often yellow or brown, but also gray. The main minerals of aluminate cement are calcium aluminate (CaO·Al2O3, CA) and other aluminate, as well as a small amount of calcium silicate (2 CaO·SiO2). The color is mostly grey and white. The refractory cement product family is mainly used as hydraulic binder for refractory castable, monolithic refractories, and high temperature joint material for various industrial furnace applications, with stable quality and good engineering performance across the global refractory raw materials value chain.
Application Industry: Refractory Raw Materials.
Target Equipment: Refractory Castable Binder, Industrial Furnace Lining, and High Temperature Joints of small, medium-size, and large industrial operations across the global refractory raw materials value chain.
Specific Application Zones: The A600 grade (Al2O3 content minimum 50%) is the standard variant engineered for general refractory castable binder service, with Cold Crushing Strength 24 hour minimum 45 MPa and 72 hour minimum 55 MPa. The A700 grade (Al2O3 content 50-60%) is the higher-demand variant engineered for refractory castable binder service, with Cold Crushing Strength 24 hour minimum 55 MPa and 72 hour minimum 65 MPa. The A900 grade (Al2O3 content minimum 53.5%) is the high-demand variant engineered for refractory castable binder service, with Cold Crushing Strength 24 hour minimum 72 MPa and 72 hour minimum 82 MPa. The CA-70 grade (Al2O3 content 68.5-70.5%) is the highest-demand variant engineered for refractory castable binder service, with Cold Crushing Strength 24 hour 40-50 MPa and 72 hour 45-55 MPa. All four grades deliver good refractoriness, high strength, and rapid hardening for refractory castable binder, industrial furnace lining, and high temperature joints service, with stable quality and good engineering performance across the global refractory raw materials value chain.
CH Refractories is a Refractory cement manufacturer in China, Henan, Zhengzhou. The complete Refractory cement 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 Refractory Raw Materials customers across the global refractory raw materials value chain.
