CA 70 High Alumina Refractory Cement High-Strength Calcium Aluminate Binder for Castable Urgent Repair

Our CA-series High Alumina Cement (also known as Calcium Aluminate Cement or refractory cement) is a high-performance hydraulic cementing material manufactured by grinding clinker with calcium aluminate as the main component. With alumina (Al₂O₃) content ranging from 50% to over 77%, it serves as the critical high-strength binder for manufacturing premium low-cement and ultra-low-cement refractory castables.

This cement enables the construction and repair of all types of furnaces and kilns, offering excellent thermal insulation, acid erosion resistance, and high strength. It is particularly valued for urgent repair projects and demanding schedules where rapid setting and early strength development are essential.

Each grade is produced under strict quality control protocols, ensuring consistent chemical composition, stable physical properties, and reliable performance in high-temperature environments up to 1800°C. The material features low impurity content (SiO₂, Fe₂O₃, R₂O), which significantly enhances high-temperature performance and corrosion resistance compared to ordinary cements.

• Rapid-Hardening & High Early Strength: Achieves high compressive and rupture strength within 1-3 days, significantly accelerating project timelines and enabling urgent repair completion with minimal downtime.
• Exceptional High-Temperature Performance: Refractoriness exceeds 1650°C, with a maximum service temperature reaching 1800°C, suitable for various atmospheric conditions in demanding industrial furnaces and kilns.
• Superior Bonding & Structural Integrity: Forms a strong, integral bond with furnace linings and refractory aggregates, ensuring monolithic structural integrity and eliminating weak points in the lining system.
• Excellent Durability & Resistance: Exhibits good resistance to chemical corrosion, high wear resistance, and high thermal shock stability, extending the service life of refractory linings in harsh environments.
• Optimized Workability: Features stable physical performance, low water demand, and rapid, complete wet hydration, allowing for easier mixing, placement, and installation without compromising final strength.

• Metallurgy & Heat Treatment: Linings for various industrial furnaces, ladles, tundishes, and soaking pits in steelmaking and non-ferrous metal processing.
• Power Generation & Environmental Protection: Circulating fluidized bed (CFB) boilers, waste incineration furnaces, and biomass power plant refractory linings requiring high thermal shock resistance.
• Chemical, Petrochemical & Ceramics: High-temperature reactors, reformers, cracking heaters, ceramic kiln furniture, shuttle kilns, and glass lehrs where chemical inertness is critical.