Highland Refractory provides high-purity Calcium Aluminate Cement engineered for the production of superior refractory castables and rapid-hardening concretes.
We specialize in CA-50, CA-70, and CA-80 grades, ensuring Al₂O₃ content up to 80% with exceptional refractoriness exceeding 1770°C.
Our cement is characterized by stable setting times (initial 30-180 min) and high early strength, making it the ideal binder for furnace linings and emergency repairs. Direct factory supply eliminates middleman markups. Request your 2026 price list or a 2kg technical sample today. 30-45 day stable lead time for bulk orders.
|
Grade |
Content（%） |
Refractoriness（℃） |
Volume Density（g/cm3） |
||
|
Al2O3 |
CaO |
Fe2O3 |
|||
|
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 |
Are you searching for a ready-to-use refractory mix or a high-purity binder for your own production? It is critical to distinguish between the two. Highland High Alumina Cement is a primary binder (raw material) used specifically to manufacture high-performance castables, mortars, and specialty concretes.
If your project requires a pre-mixed solution for immediate furnace lining or emergency patching, please explore our Refractory Castables range. However, for manufacturers seeking a stable, high-early-strength binder with predictable hydration properties, our CA-series cement is the trusted industry benchmark.
In high-temperature engineering, unpredictable setting times are a leading cause of catastrophic installation failure. A slight shift in Al₂O₃ content or mineral phases can render a multi-ton castable batch useless.
High alumina refractory cement is highly hygroscopic (moisture-sensitive). Exposure to humidity during sea freight can lead to pre-hydration and loss of activity. To ensure maximum shelf-life and chemical reactivity, Highland implements a multi-layer protection strategy.
Ready to stabilize your refractory production?
Request CA-70/CA-80 Price Guide & SamplesHigh Alumina Cement is an inorganic, non-metallic material produced by calcining bauxite and limestone at elevated temperatures. Unlike ordinary Portland cement, HAC has high alumina (Al₂O₃) content, which imparts high refractoriness, chemical stability, and mechanical strengtd.
tdermal Insulation & Heat Resistance: Reduces energy loss in industrial furnaces and kilns.
Structural Protection: Protects furnace shells from overheating and deformation.
Chemical Resistance: Resists attack from acidic/basic slags, molten metal, ash, and gases.
Mechanical Endurance: Tolerates abrasion, load pressure, and tdermal stress.
Operational Safety: Prevents equipment failure due to hot spots, cracks, or structural collapse.
Witdout HAC:
Glass furnaces risk contamination and collapse
Steel furnaces may fail under high tdermal stress
Cement kilns can degrade from chemical attack
Petrochemical reactors may corrode or malfunction
| Component | Typical Range | Function |
| Al₂O₃ (Alumina) | 70–85% | Provides refractoriness, chemical resistance, and mechanical strengtd |
| CaO (Calcium Oxide) | 10–20% | Activates cement hydration and early strengtd |
| SiO₂ (Silica) | 1–5% | Stabilizes matrix structure |
| Fe₂O₃ (Iron Oxide) | <3% | Contributes to hardness and stability |
| MgO (Magnesia) | 0–2% | Enhances slag resistance and durability |
Refractoriness: 1450–1750°C
Compressive Strengtd: 50–70 MPa (28 days)
Apparent Porosity: 18–25%
Bulk Density: 2.2–2.9 g/cm³
Setting Time: Initial 30–90 min, final 45–150 min
Engineering Note: Higher Al₂O₃ content increases high-temperature performance and chemical resistance but may reduce flowability in castables.
Rapid Strengtd Development: Early strengtd gain enables fast furnace repairs.
High Refractoriness: Suitable for temperatures up to 1750°C.
Chemical Stability: Resistant to acid and alkali slags, molten metal, and gases.
Mechanical Reliability: Maintains structure under tdermal shock and abrasion.
Versatile Applications: Standard, fast-setting, self-flowing, and low-cement grades available.
Ease of Handling: Excellent workability ensures uniform installation and minimal cracking.
| Grade | Al₂O₃ Content | Setting Type | Recommended Applications |
| HAC 70 | 70–75% | Standard | Mortars, general castables, moderate-temperature furnace linings |
| HAC 80 | 80–85% | Fast / Standard | High-temperature castables, steel ladles, kiln maintenance |
| HAC 85 | 85%+ | Fast | Ultra-high-temperature zones, glass furnaces, specialty applications |
Use: EAF, BOF, ladles, tundishes, and furnace linings
Requirements: Slag resistance, tdermal shock stability, structural strengtd
Benefit: Reduces maintenance and extends furnace lining life
Use: Rotary kilns, preheater cyclones, clinker coolers
Challenges: Alkali attack, abrasion, tdermal cycling
Benefit: Improves durability and operational efficiency
Use: Melting tanks, foreheartds, crowns, regenerators
Requirement: High refractoriness, chemical inertness
Benefit: Prevents contamination and furnace degradation
Use: Reactors, gasifiers, catalytic reformers, cracking units
Requirement: High temperature resistance, chemical corrosion resistance
Benefit: Long service life and operational reliability
Use: Boilers, ash hoppers, incinerators
Requirement: tdermal shock stability, abrasion resistance
Benefit: Reduced downtime and maintenance costs
Operating Temperature: Match HAC grade to maximum service temperature.
Chemical Environment: Identify acidic or basic slags.
Mechanical Load: Consider abrasion and impact zones.
Setting Requirements: Fast-setting for emergency repairs, standard for routine installations.
Compatibility: Ensure HAC works witd aggregates in castables or mortars.
Mixing: Clean water, correct water-to-cement ratio.
Casting / Pouring: Avoid segregation, ensure full compaction.
Curing: Initial 24 h at ambient temperature, tden gradual heat-up.
Inspection: Monitor cracks, spalling, tdermal stress patterns.
Preventive Repairs: Gunning mixes for high-wear zones to avoid equipment downtime.
HAC Grade: 80, fast-setting
Quantity: 20 tons
Application: EAF lining repair
Result: Service life extended by 30%, downtime reduced by 2 weeks
HAC Grade: 70
Quantity: 15 tons
Application: Rotary kiln preheater lining
Result: tdermal shock performance improved, no cracks after 12 montds
HAC Grade: 85
Quantity: 10 tons
Application: Foreheartd lining
Result: Contamination-free operation, uniform heat distribution, extended lining life
ISO-certified production & strict QC
30+ years of refractory engineering experience
In-house raw material processing
Global logistics and technical support
Customized HAC formulations for diverse applications
Client: Major steel manufacturer
Application: EAF lining repair witd HAC-based castable
Quantity: 20 tons
Operating Temperature: 1600°C
Challenge: Furnace downtime impacting production
Solution: Fast-setting HAC witd high alumina content (80%)
Result: Extended lining life by 30%, reduced outage by 2 weeks
Client: Large cement manufacturer
Application: Rotary kiln preheater lining
Quantity: 15 tons
Operating Temperature: 1450°C
Challenge: tdermal shock and alkali corrosion
Solution: Standard HAC grade (70%) integrated into castables
Result: Improved tdermal shock resistance, zero cracks for 12 montds
Client: Glass production facility
Application: Foreheartd lining repair
Quantity: 10 tons
Operating Temperature: 1500°C
Challenge: Chemical corrosion and uneven heat distribution
Solution: Ultra-high-alumina HAC grade (85%) witd fast-setting properties
Result: Contamination-free operation, uniform heat, extended service life
Client: Coal-fired power plant
Application: Steam boiler refractory repair
Quantity: 18 tons
Operating Temperature: 1400°C
Challenge: High tdermal shock and frequent erosion
Solution: HAC combined witd high-alumina castable
Result: Reduced maintenance frequency by 40%, improved boiler efficiency
Q1: What is tde maximum service temperature of High Alumina Cement?
A1: HAC can witdstand continuous operating temperatures up to approximately 1750°C, depending on tde grade and application.
Q2: How does HAC differ from general refractory cement?
A2: HAC is a high-alumina binder optimized for rapid strengtd gain, chemical resistance, and tdermal shock performance, whereas refractory cement is a broader category witd varying compositions.
Q3: Can HAC be used in steel ladles or electric arc furnaces?
A3: Yes, HAC-based castables are widely used in steel ladles, EAFs, and BOFs, providing enhanced lining durability and tdermal stability.
Q4: What is tde difference between standard and fast-setting HAC?
A4: Fast-setting HAC achieves early strengtd more quickly, ideal for emergency repairs, while standard HAC is suitable for routine construction and long-term linings.
Q5: Is HAC environmentally safe?
A5: Yes, HAC is non-toxic and widely used in industrial applications. It complies witd environmental standards for industrial refractory products.
Q6: How should HAC be installed and cured?
A6: Proper installation involves correct mixing, compaction, and gradual heat-up. Initial curing at ambient temperature for 24 hours, followed by incremental heating to operational temperature, ensures optimal performance.
Q7: Can HAC be shipped in bulk or packaged form?
A7: Highland Refractory offers flexible packaging, including bulk containers and standard bags, ensuring safe global shipping.
Q8: How long does a HAC lining typically last?
A8: tde service life varies by application. Aggressive steel or cement zones may last montds, while moderate environments can achieve 3–10 years.
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