High Chrome Brick
Main Chemical Compositions & Categories
High Chrome Bricks are defined by their very high content of CHROMIUM OXIDE (Cr2O3), often exceeding 80%. This content is achieved by synthesizing pure Cr2O3 with minor amounts of Al2O3 or ZrO2 for structural stability.
| CATEGORY | Cr2O3 CONTENT | BONDING/MATRIX | PRIMARY ADVANTAGE |
| HIGH CHROME | 80% to 98% | Sintered or Fused | Maximum chemical corrosion resistance |
| CHROME-CORUNDUM | 5% to 20% | Sintered Al2O3 Matrix | Balanced TUL and chemical resistance |
Key Properties and Performance
| PROPERTY | TYPICAL PERFORMANCE | MECHANISM OF ADVANTAGE |
| Corrosion Resistance | MAXIMUM | Cr2O3 is highly inert and forms a saturated, protective solid solution interface with most industrial slags. |
| Temperature Under Load (TUL) | VERY HIGH | The high refractoriness of Cr2O3 (MP ~ 2300°C) ensures stability at extreme temperatures. |
| Spalling Resistance | MODERATE | High density and single-phase crystal structure can make it vulnerable to rapid thermal cycling. |
| Slag Resistance | EXCEPTIONAL | Particularly resistant to V2O5 (Vanadium) and Fe-rich, complex, or low-alkali basic slags. |
Advantages and Key Characteristics
High Chrome Bricks are a top-tier solution reserved for the most hostile, chemically aggressive environments that rapidly destroy standard refractories like Cr2O3 or MgO.
- Unrivaled Chemical Inertness: The extremely high concentration of Cr2O3 makes the brick nearly impervious to dissolution by specific industrial melts, particularly those containing high levels of V2O5 (common in oil ash) or complex acidic/neutral waste slags.
- Structural Integrity at Extreme Heat: With a melting point far exceeding that of most other refractory oxides, the brick maintains structural strength and creep resistance under the harshest thermal conditions.
- Erosion Control: The dense, high-hardness nature of the Cr2O3 phase provides excellent resistance to physical abrasion and scouring from high-velocity melts or particulate matter.
Typical Industries and Applications
This premium brick is used in industries facing unique, highly aggressive chemical wear:
- Petrochemicals: Oil refining/gasification units, especially where crude oil contains high levels of Vanadium, which forms highly corrosive low-melting-point slags (V2O5) that flux most other refractories.
- Chemical Industry: Incinerators and reactors processing hazardous or complex chemical waste with aggressive ash/slag chemistries.
- Glass Industry: Specialized areas handling unique glass compositions or severe volatilization.
Furnace Areas and Service Zones
They are specified for maximum wear and chemical attack zones:
- CRITICAL SLAG LINES: Used where the slag chemistry is uniquely corrosive, such as V2O5 attack in gasifiers.
- BURNER PORTS/THROATS: Areas subject to high thermal and chemical loading from fuel-air combustion products.
- REACTION ZONES: The primary lining in chemical or gasification reactors where the product is corrosive.
Key Data Sheet Properties to Consider
Selection is based almost entirely on chemical composition and purity:
- Cr2O3 Content: CRITICAL VALUE. Must be verified to confirm the high concentration (e.g., 90% or greater).
- SiO2 and Alkali Content: Must be minimized, as these impurities act as fluxes and are detrimental to the high refractoriness of Cr2O3.
- Bulk Density (BD) and Apparent Porosity (AP): High BD and low AP are essential to prevent penetration by corrosive liquids.
- TUL and CISC: Must demonstrate superior hot strength and creep resistance over Corundum-Chrome grades.
Technical Guidance: High Chrome Bricks are the most expensive oxide refractory solution and are only justified when all other materials fail due to specific chemical attack. Due to the high Chromium content, these materials are subject to stringent environmental regulations. Specific handling, demolition, and disposal protocols must be followed to manage potential Cr(VI) formation and hazardous waste classification.
✨ 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. |
