High Alumina Refractory Cement is a hydraulic binder designed for refractory applications. It is made from high-grade bauxite and limestone through calcination and fine grinding. Its main mineral phases, CA and CA2, give it excellent early strength, high refractoriness, and dependable bonding performance at high temperatures.
Compared with ordinary cement, it provides better heat resistance, faster setting, stronger chemical resistance, and more stable performance in harsh environments. It is widely used as a binder for refractory castables, mortars, gunning mixes, ramming materials, and precast refractory shapes, making it ideal for furnace construction, kiln repair, and lining maintenance. Xintai Refractory offer CA50, CA60, CA70, and CA80 grades to meet different temperature, strength, and installation requirements. These products are widely used in steel, cement, glass, ceramics, petrochemical, non-ferrous, and power industries, with stable quality, customizable packaging, and competitive factory pricing.
Technical Specifications
| Grade | Al2O3 Content (%) | CaO Content (%) | Fe2O3 Content (%) | Refractoriness (℃) | Volume Density (g/cm3) |
|---|---|---|---|---|---|
| Special Grade | ≥85 | ≤0.60 | ≤1.40 | ≥1790 | ≥3.60 |
| Grade-80 | ≥80 | ≤0.60 | ≤3.00 | ≥1790 | ≥3.00 |
| Grade-70 | 70~80 | ≤0.80 | ≤3.00 | ≥1790 | ≥2.80 |
| Grade-60 | 60~70 | ≤0.80 | ≤3.00 | ≥1790 | ≥2.65 |
| Grade-50 | 50~60 | ≤0.80 | ≤2.50 | ≥1790 | ≥2.55 |
Key Features
- High Refractoriness: Designed for high-temperature environments, high alumina refractory cement can withstand service conditions up to 1770℃ depending on the grade.
- Fast Setting and High Early Strength: This cement develops strength quickly after mixing, helping shorten construction time and improve installation efficiency.
- Excellent Bonding Performance: It provides strong bonding with refractory aggregates such as calcined bauxite, corundum, mullite, and chamotte.
- Good Thermal Shock Resistance: The material performs well under repeated heating and cooling cycles, reducing the risk of cracking and spalling.
- Corrosion and Slag Resistance: It offers good resistance to slag penetration, chemical attack, and aggressive industrial atmospheres.
- Stable Volume Performance: High alumina refractory cement maintains good dimensional stability during hardening and heating.
- Wide Application Range: Suitable for producing refractory castables, mortars, repair mixes, and precast refractory components for many industries.
Typical Applications
- Steel Industry: Used in refractory castables, ladle linings, tundish linings, and furnace repair materials.
- Cement Industry: Applied in rotary kiln linings, preheater systems, and calcining equipment.
- Glass Industry: Used for refractory mortars and castables in glass furnace construction and maintenance.
- Ceramic Industry: Suitable for kiln linings, kiln cars, and other thermal process equipment.
- Non-ferrous Metallurgy: Used in melting furnaces, holding furnaces, and other high-temperature equipment.
- Power Industry: Applied in boiler linings, incinerators, and fluidized bed furnaces.
Production Details
Raw Materials: High-grade alumina bauxite clinker, refractory clay, and high-purity additives.
Manufacturing Process: Strict quality control during batching, mixing, and curing ensures consistent product quality.
Quality Control: Rigorous chemical and physical testing to verify product performance at high temperatures.
Packing and Shipping Details
Standard Packing: 25 kg paper bags with moisture-proof inner lining.
Bulk Packing: Jumbo bags available upon request.
Palletizing: Wooden pallets with shrink wrapping for enhanced protection during transportation.
Shipping Methods: By sea, by truck, or by rail.
Delivery Form: Dry powder, ready for on-site mixing.
All products are securely packed to prevent moisture absorption and damage during transportation.
Frequently Asked Questions (FAQ)
Q1: What is high alumina refractory cement?
High alumina refractory cement is a calcium aluminate-based hydraulic cement used as a binder for refractory castables, mortars, and monolithic linings in high-temperature applications.
Q2: What grades are available?
Q3. What is the refractoriness of high alumina refractory cement?
Q4: What is this product mainly used for?
Q5: Does high alumina refractory cement have good early strength?
Yes. It has fast hardening characteristics and develops high early strength, which is beneficial for refractory construction and repair work.
