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High Alumina Castable
- Al2O3: ≥60-80%
- SiO2: 20-40%
- Bulk Density (g/cm³): 2.3-2.6
- Cold Crushing Strength（MPa）: 70-100
- Max Service Temperature（℃）: 1400-1600
- Certification: ISO9001/ISO14001/ISO45001/ISO50001
- Samples: Provide you free samples for testing
Custom High Alumina Castable Manufacturer
Professional custom Ceramic Fiber Tape manufacturer: heat-resistant, insulating, tailor-made to your needs, ensuring premium quality.
Why choose Jianhong Refractory?
If you’re in search of the finest High Alumina Castable for optimal solutions to serve your clients, look no further than Jian Hong Refractory. Our meticulous practices ensure the delivery of top-tier High Alumina Castable.
Low MOQ
Jian Hong Refractory offers flexible production, accommodating orders from 1 to 10,0000 units on demand.
Fast delivery
Our mature production line facilitates 24/7 operations, enabling rapid turnaround and prompt delivery.
Competitive Price
We guarantee the most competitive prices while maintaining the highest quality standards compared to other suppliers.
Expert Production
Equipped with three modern production lines, our facilities ensure consistent quality and timely delivery, setting us apart from others in the industry.
Satisfaction Assurance
With a focus on refractory product quality and clear communication, we ensure that every step is streamlined for the ease and satisfaction of our clients.
Comprehensive Product Range
Beyond high alumina bricks, our portfolio includes castables, insulation bricks, ceramic fiber products, and refractory raw materials, providing a one-stop solution unlike competitors with limited ranges.
1 Refractory Raw Materials
2 Crushing and Grinding
3 Screening and Mixing
4 Formulation and Batching
5 Molding and Shaping
6 Drying
7 Pre-Firing Inspection
8 Firing in Kiln
9 Firing Completed
10 Final Quality Inspection
11 Packaging
12 Transport and Delivery
The Ultimate Buyer’s Guide: How to Purchase High Alumina Castable
Are you in the market for High Alumina Castable ? Look no further.
This all-inclusive buyer’s guide provides you with crucial insights into High Alumina Castable, which find applications in metallurgical industry, power industry, ceramic industry, chemical industry and other heat treatment high temperature industries. Whether you’re contemplating importing them for your projects or planning local distribution, this guide furnishes invaluable information to guide your decision-making process.
Chapter 1
What is High Alumina Castable?
A Refractory Workhorse for Ultra-High-Temperature Environments
High alumina castable is a premium refractory material with Al₂O₃ content ≥45%, blending high-purity alumina aggregates, fines, and bonding agents. Engineered for extreme heat (up to 1790°C+), it excels in corrosive, abrasive industrial settings like steel mills, cement kilns, and petrochemical plants.
Chapter 2
Features of High Alumina Castable
Engineered for optimal service life
- Superior High – Temperature Resistance:
Maintains stability at temperatures up to 1700°C, ideal for extreme heat zones. - Excellent Wear Resistance:
Withstands mechanical erosion, reducing maintenance frequency in harsh operations. - Strong Thermal Shock Resistance:
Resists cracking from rapid temperature changes, ensuring long – term performance. - Good Chemical Stability:
Resists corrosion from acids, alkalis, and molten metals in industrial settings. - High Compressive Strength:
Boasts strong structural integrity, supporting heavy loads in high – temp conditions. - Easy Construction:
Can be poured, molded, or pumped, simplifying on – site installation processes.
Chapter 3
Specifications of High Alumina Castable
| High Alumina Castable | GL-70 | GL-75 | GL-90 | |
|---|---|---|---|---|
| AL2O3（%） | 70 | 75 | 90 | |
| Bulk Density (g/cm3) ≥ | 110℃×24h | 2.6 | 2.7 | 3 |
| Withstand pressure strength（Mpa） | 110℃×24h | 100 | 100 | 100 |
| Flexural strength （Mpa） | 110℃×24h | 8 | 14 | 10 |
| Permanent linear rate of change | 1100℃×3h | ±0.4 | ±0.4 | ±0.3 |
| Maximum operating temperature(℃) | 1600 | 1650 | 1700 | |
| Reference water consumption （%） | 6.0~7.5 | 5.5~6.0 | 4.5~5.0 | |
Chapter 4
Application of High Alumina Castable
Versatile solutions for resilient operations
1. Steelmaking ladles
- Lined a 100t steelmaking ladle to extend lining life by 30% under cyclic thermal stress.
- Repaired worn areas in ladle lining, reducing tap-to-tap downtime by 15%.
2.Electric arc furnace (EAF)
- Cast lining in EAF hearth reduced erosion rate, resulting in 20% increase in service cycles.
- Applied repair castable to EAF roof, cutting energy consumption by 8%.
3. Cement rotary kilns
- Installed in kiln inlet zone, improving resistance against acidic slag attack.
- Rebuilt kiln hood with high aluminum castable, reducing maintenance intervals by 25%.
4. Incinerators and industrial boilers
- Casted refractory lining in waste-to-energy boiler, extending insulation life under harsh temperatures.
- Applied in biomass incinerator chamber, resisting corrosive ash and thermal cycling.
Chapter 5
Quality Assurance for High Alumina Castable
At Henan Jianhong Refractory Materials Co., Ltd.,We implement strict quality control from raw material selection to finished product inspection, adhering to ISO 9001 standards. Each batch undergoes rigorous testing to ensure consistent performance.
The key quality tests typically include:
| Category | Test Item | Purpose | Key Requirement |
|---|---|---|---|
| Physical Properties | Bulk Density & Porosity | Assess compactness & strength | Density meets design; porosity ≤ specified |
| Cold Crushing Strength | Evaluate structural load capacity | ≥30 MPa (common castables) | |
| Refractoriness | Determine melting resistance | ≥ Service temp + 100–200°C | |
| Refractoriness Under Load | Check high-temp deformation | ≥ Service temp to prevent collapse | |
| Thermal Expansion | Ensure dimensional stability | Linear change within ±1% | |
| Chemical Properties | Composition Analysis | Verify main components & impurities | E.g., Al₂O₃ ≥48% for high-alumina castables |
| Slag Resistance | Test resistance to high-temp slag | Erosion depth/mass loss ≤ standard | |
| Thermal Shock Resistance | Assess resistance to temperature cycles | ≥15 cycles (standard condition) | |
| Construction Properties | Setting Time (Initial/Final) | Ensure workable construction time | Initial ≥30 min; final ≤8 h |
| Fluidity | Evaluate casting plasticity | Self-flowing ≥220 mm (e.g.) | |
| Moisture & Water Addition | Control mixing consistency | Dry moisture ≤1%; water addition 6%–8% | |
| Appearance & Packaging | Visual Inspection | Check for caking, impurities, damage | No clumps/impurities; particles intact |
| Packaging Integrity | Ensure transport protection | Sealed bags; clear labels (grade/batch date) | |
| Special Properties | Abrasion Resistance | For high-wear areas | Wear loss ≤ specified |
| Erosion Resistance | For fluid-scouring environments | Customized test criteria | |
| Batch Control | Sampling & Reporting | Ensure batch consistency | Random sampling; test report with batch data |
| Sample Retention | For quality traceability | Retain samples ≥3 months |
Through this meticulous testing process, we ensure that our Refractory Castable products meet the highest standards of quality, reliability, and performance, making them ideal for various applications in various industries.
Chapter 6
Chapter 7
In Summary
High Alumina Castable is a crucial high – temperature refractory, with excellent heat resistance, wear resistance, and diverse applications. Its quality assurance makes it reliable for industrial high – temp operations.
Henan Jianhong Refractory Materials Co., Ltd. is a leading supplier, offering high-quality High Alumina Castable with customized specs, timely delivery, and professional after-sales service. Trusted by global clients in steel, cement, and petrochemical industries.
