Alumina Lining Plates
Main Chemical Compositions & Categories
Alumina Lining Plates are highly specialized ceramics, distinct from fired refractory bricks. They are classified by ultra-high Al2O3 content, typically sintered at very high temperatures.
| Category | Al2O3 Content | Classification |
| High Purity | 90% to 92% | Standard Wear-Grade |
| Ultra Purity | 95% to 97% | Enhanced Chemical/Wear Resistance |
| Corundum Grade | 99% + | Extreme Purity/Corrosion Resistance |
Key Properties and Performance
| Property | Typical Performance | Variation with Al2O3 Content |
| Temperature Under Load (TUL) | Excellent (typically 1600°C+) | Increases with purity; service is often limited by the adhesive used for installation. |
| Thermal Shock | Good to Very Good | Improves slightly with lower porosity and certain grain structures; generally very reliable. |
| Corrosion | Excellent resistance to acids, alkalis, and moisture | Increases significantly with Al2O3 content/purity, due to reduced glass phase and impurities. |
| Mechanical Strength/Wear | Exceptional Hardness (Mohs 9) | Increases significantly with Al2O3 content and Bulk Density (BD). This is the primary driver for its use. |
Advantages and Key Characteristics
Alumina Lining Plates (often called ceramic tiles or wear plates) are defined by their extreme hardness and density, providing unparalleled protection against abrasion and impact in material handling systems.
- Superior Wear Life: They can offer a lifespan 10 to 20 times longer than steel, significantly reducing maintenance and downtime.
- High Density and Low Porosity: The high sintering temperature results in an extremely dense structure, minimizing material penetration and chemical erosion.
- Lightweight: With a density roughly half that of steel, they reduce the structural load on equipment like chutes and cyclones.
- Chemical Inertness: Provides excellent resistance to corrosive agents, moisture, and fine materials that might chemically attack other linings.
Typical Industries and Applications
These plates are essential in any industry dealing with the high-speed movement and impact of abrasive bulk materials:
- Mining & Aggregate: Chutes, hoppers, feed bins, screens.
- Coal & Power Generation: Coal pulverizer pipes, transport chutes, bunkers, fan blades.
- Ferrous Industry: Sinter plants, coke plants, blast furnace feed systems (trolleys, hoppers).
- Cement & Lime: Crusher housings, cyclones, vertical mill linings, ductwork.
Furnace Areas and Service Zones (Abrasion Focus)
While less common for direct molten metal contact than bricks, they are crucial for asset longevity in material charging/handling:
- Material Transfer Systems: Elbows, bends, pipes, and chutes where high-velocity particles cause impact and sliding abrasion.
- Crushers and Mills: Protection against high kinetic energy impacts from large, hard materials.
- Cyclones and Separators: Linings where turbulent, fast-moving abrasive particles cause severe erosion.
Key Data Sheet Properties to Consider
When selecting Alumina Lining Plates, the focus shifts away from thermal load to mechanical properties:
- Al2O3 Content: Directly correlates with hardness, density, and wear resistance (aim for 90% and above).
- Bulk Density (BD): Crucial. Higher BD ($\sim$3.6 g/cm³+) means lower porosity and superior abrasion resistance.
- Hardness (Mohs/Vickers): The defining property. Look for values confirming Mohs 9, indicating hardness second only to diamond.
- Wear Loss (%): Measured via standard tests (e.g., Taber or ASTM methods); a lower percentage indicates better performance.
- Bonding Method: Determine if the plates are supplied pre-assembled on rubber/steel backing (for impact absorption) or for direct adhesive application.
Technical Guidance: Alumina Lining Plates offer maximum protection against pure abrasion. For systems involving high heat and abrasion, ensure the adhesive (epoxy) or the chosen backing material can handle the maximum service temperature. For severe impact applications, consider ceramic embedded in a rubber or steel composite backing for energy absorption.
✨ Customization Services
We offer product customization services, allowing you to tailor the appearance, dimensions, or specific markings of items like refractory shapes or bricks. This includes options for incorporating specific geometric requirements to ensure seamless integration into your process systems.
🔬 Sampling for Testing & Validation
Free product samples are available for thorough testing and validation. This allows you to confirm the quality, compatibility, and performance of our materials—such as specific bricks, castables, or raw materials—before committing to a full order.
💡 Expertise in Refractory Solutions
Leverage our deep expertise to receive detailed, application-specific refractory solutions. We move beyond just selling products by providing comprehensive plans that encompass material selection, installation guidance, and performance optimization to maximize the lifespan and efficiency of your high-temperature processes.
Rabatec products are exclusively manufactured in facilities that have achieved rigorous ISO certifications across Quality (ISO 9001), Environmental Management, and Occupational Health & Safety. This commitment ensures every product, from refractory bricks to specialized equipment, meets the highest global benchmarks for performance, sustainability, and workplace safety.
📦 Logistics Excellence: Shipping, Packaging, and Marking
Minimizing Risk: We manage all logistics to minimize handling touchpoints and transit shock. Our carriers are pre-vetted for their experience in transporting heavy, fragile, and sensitive industrial materials.
Traceability: Every shipment includes comprehensive documentation and tracking information, providing end-to-end visibility and ensuring precise delivery coordination for your site.
Protection is Paramount: Our packaging strictly follows industry standards to prevent damage, corner chipping, and moisture absorption—especially critical for materials like Basic Refractory Bricks and Refractory Mortars & Mixes.
Robust Palletization: Products are secured on fumigated, high-strength export pallets (e.g., 1100x950mm or similar sturdy dimensions) using heavy-duty strapping and durable protective wrapping (polyethylene sheeting, cardboard, etc.) to withstand long-distance travel and multiple loadings.
Moisture Control: Sensitive materials are protected with appropriate sealing and, where necessary, desiccants or moisture-vapor proof enclosures to maintain the product's integrity until installation.
Clear Identification: All outer packaging is clearly marked on multiple sides with large, legible text for immediate identification and safe handling.
Full Traceability: Markings include all essential data points: Product Name, Quality Grade, Batch Number, Quantity, Net/Gross Weight, Order Number, and the Final Destination/Construction Area. This ensures every pallet can be accounted for and correctly staged upon arrival.
Safety & Compliance: We adhere to all regulatory requirements for marking, labeling, and placarding—especially for any items classified as Dangerous Goods—to ensure full compliance with international and domestic transport regulations.
❓ Frequently Asked Questions (FAQ)
Question | Elaborated Answer |
Q: What is the Refractoriness Under Load (RUL) of your refractories? | A: Refractoriness Under Load (RUL) is a critical property that defines the maximum temperature our materials can withstand while under compressive stress before deforming (softening). Since we offer a wide range of materials—from Alumina-Silicate Bricks to high-performance Silicon Carbide Bricks—the RUL varies significantly. For specific product data, please refer to the product data sheet or submit a quote request for the material you are interested in. |
Q: Where are the Rabatec refractories and materials produced? | A: Our products are primarily sourced from specialized manufacturing plants in China. Crucially, these facilities have all undergone rigorous audits and achieved comprehensive ISO certifications (Quality, Environment, and Safety), ensuring that production adheres to the highest global standards for consistency and performance. |
Q: What refractory materials does the company offer? | A: We supply a comprehensive portfolio of advanced refractory solutions, including: Shaped Products: Alumina & Silica Bricks, Basic & Specialized Bricks (e.g., Magnesia), SiC & Structural Ceramics, and Precast Shapes. Monolithic Products: Refractory Castables, Mixes & Mortars. Insulation: Insulation Fibre and High-Performance Insulation Products. |
Q: How should I choose the appropriate refractory material for my application? | A: Selecting the correct refractory is paramount to process efficiency. The choice depends on three key factors: 1. Operating Environment: Maximum process temperature and thermal cycling (shock). 2. Chemical Attack: Type of slag, molten metal, or corrosive gas being handled (acidic, neutral, or basic). 3. Mechanical Stress: Abrasion, erosion, and static load requirements. We recommend utilizing our detailed refractory solutions service to consult with our engineers for an optimized, application-specific recommendation. |
Q: Which monolithic material should I choose when patching an existing lining? | A: For patching and minor repairs, the ideal monolithic material depends on the parent lining material, the patching depth, and the need for a rapid return to service. Common choices include: Refractory Mortars & Mixes (for minor joints/surfaces) or Plastic Refractories (for areas requiring physical compaction). Always choose a patch material chemically compatible with the existing lining to ensure proper bonding and service life. |
Q: Can I receive product samples before placing a major order? | A: Yes. We gladly provide product samples for your internal testing and validation purposes. This ensures you can confirm the quality, composition, and fit of the material—such as our Refractory Castables or Alumina-Silicate Bricks—in your specific operational environment before committing to a bulk purchase. |
Q: Do you provide certifications to verify material quality? | A: Absolutely. We provide product-related inspection certificates and quality assurance documentation upon request. This verifies that your order has passed all internal quality control checks and meets the required material specifications and industry standards. |
Q: What measures are taken for product protection during transport? | A: We ensure quick, reliable transport by using robust, industrial packaging that strictly follows industry standards. This includes high-strength palletization, heavy-duty strapping, and weather-resistant wrapping to protect fragile items like bricks and mixes from corner chipping, mechanical damage, and moisture during transit. |
