High Alumina Refractory Cement, also known as refractory cement or calcium aluminate cement, is a special hydraulic binder mainly composed of calcium aluminates. It is manufactured by calcining selected bauxite and limestone raw materials at high temperatures, followed by grinding into fine powder.
Unlike ordinary Portland cement, high alumina cement provides excellent high-temperature resistance, early strength development, chemical corrosion resistance, and thermal stability. It is mainly used as a bonding material for producing unshaped refractory products, especially refractory castables and heat-resistant concrete.
Xintai High Alumina Refractory Cement is produced with carefully selected raw materials and strict quality control to ensure stable chemical composition and reliable performance in high-temperature applications.
The cement can be combined with refractory aggregates, powders, and additives to produce castables for industrial furnaces, kilns, boilers, and other thermal equipment. Different grades are available according to alumina content, service temperature, strength requirements, and operating conditions.
Physicochemical Parameters
| Grade | Refractoriness (℃) | Chemical Composition (%) | Volume Density (g/cm³) | ||
|---|---|---|---|---|---|
| Al₂O₃ | CaO | Fe₂O₃ | |||
| Special Grade | ≥1790 | ≥85 | ≤0.60 | ≤1.40 | ≥3.60 |
| Grade-80 | ≥1790 | ≥80 | ≤0.60 | ≤3.00 | ≥3.00 |
| Grade-70 | ≥1790 | 70–80 | ≤0.80 | ≤3.00 | ≥2.80 |
| Grade-60 | ≥1790 | 60–70 | ≤0.80 | ≤3.00 | ≥2.65 |
| Grade-50 | ≥1790 | 50–60 | ≤0.80 | ≤2.50 | ≥2.55 |
Product Features
- High Temperature Resistance: High alumina refractory cement maintains stable bonding performance under elevated temperatures and is suitable for refractory castables and heat-resistant concrete used in industrial furnaces and kilns.
- High Early Strength: The cement develops high early strength after hydration, allowing faster installation, repair, and maintenance of refractory structures.
- Excellent Chemical Resistance: Due to its calcium aluminate composition and low free calcium hydroxide content, high alumina cement provides good resistance against sulfate corrosion and many chemical environments.
- Fast Hardening Performance: High alumina cement has a relatively rapid setting and hardening process, making it suitable for emergency furnace repairs and projects requiring short construction periods.
- Good Thermal Stability: It provides reliable performance under repeated heating and cooling cycles, helping improve the durability of refractory linings.
- Suitable for Castable Production: High alumina refractory cement is an important binder for manufacturing low cement castables, conventional castables, and other monolithic refractory materials.
Applications
High alumina refractory cement is widely used in high-temperature equipment, refractory castable production, and industrial furnace construction and repair applications, including:
- Refractory Castables Production: Widely used as a binder for producing conventional castables, low cement castables, and heat-resistant concrete.
- Steel Industry Furnaces: Suitable for refractory construction and repair applications in electric arc furnaces, ladles, tundish systems, heating furnaces, and heat treatment furnaces.
- Cement Kilns: Used for preparing refractory castables and repairing high-temperature areas in cement production equipment.
- Ceramic Kilns: Applied in tunnel kilns, shuttle kilns, roller kilns, and other ceramic firing equipment requiring heat-resistant bonding materials.
- Boilers and Incinerators: Provides reliable bonding and sealing performance for refractory linings exposed to high temperatures and repeated thermal cycling.
- Glass and Non-Ferrous Metal Industries: Used in selected furnace areas where high-temperature resistance and chemical stability are required.
- Emergency Furnace Repair: Suitable for rapid refractory repair and maintenance projects due to its fast hardening and high early strength characteristics.
The specific high alumina refractory cement grade should be selected according to the maximum working temperature, refractory substrate, chemical environment, required strength, and application conditions.
Customization Services
Xintai Refractory can provide customized high alumina refractory cement according to different project requirements.
Customization options include:
- Al₂O₃ content adjustment
- Strength requirements
- Setting time control
- Service temperature requirements
- Castable formulation requirements
- Packaging specifications
- Bulk or bagged supply solutions
Customized solutions are available for refractory contractors, furnace manufacturers, distributors, and industrial end users.
Packing and Shipping Details
- Packing: Packed in moisture-resistant bags, buckets, or other suitable containers according to product type and customer requirements.
- Shipping: Available by sea, air, or road depending on order quantity and destination.
- Delivery: Production and delivery schedules are arranged according to order quantity and customization requirements.
- Storage: Store in a dry, cool, and well-ventilated location and keep the container properly sealed before use.
- Export Service: Professional export packaging can be provided for international orders.
About Xintai Refractory
Xintai Refractory is a professional manufacturer and supplier of refractory materials and high-temperature solutions. With more than 20 years of experience in refractory production, Xintai supplies high alumina bricks, fireclay bricks, insulation bricks, refractory cement, castables, and customized refractory products.
Our products are widely used in steel, cement, ceramic, glass, chemical, non-ferrous metal, and other high-temperature industries. With factory-direct manufacturing, customized solutions, strict quality control, and international export experience, Xintai Refractory provides reliable refractory materials for industrial furnace construction and maintenance.
Contact Xintai Refractory today for high alumina refractory cement specifications, factory prices, samples, and customized refractory solutions.
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