Silicon Carbide Green
Silicon Carbide Green (SiC) is a synthetic ceramic material with the chemical formula SiC, produced by the Acheson process but using higher purity raw materials (low-iron silica and petroleum coke) and specialized processing techniques. The resulting material is green due to its near-total absence of iron and other metallic impurities.
Green SiC possesses the same exceptional properties as the Black SiC grade (extreme hardness, high thermal conductivity, and superior thermal shock resistance) but with greater purity and, often, higher friability (sharpness/brittleness). This makes it the preferred material for applications demanding the highest quality, particularly in fine grinding, specialty ceramics, and premium refractories.
Main Function and Characteristics
Green SiC is the highest purity grade of SiC, offering enhanced chemical stability and performance.
| CHARACTERISTIC | VALUE RANGE | PRIMARY REFRACTORY FUNCTION |
|---|---|---|
| Purity (SiC) | >99% | Ensures enhanced chemical inertness and higher electrical resistivity. |
| Color | BRIGHT GREEN | Indicates low metallic impurity content (especially iron). |
| Microstructure | Sharp, Crystalline | Provides excellent abrasive and cutting performance. |
CLASSIFICATION
- Purity Focus: Ultra-Pure Non-Oxide Ceramic
- Primary Application Focus: Minimized Fe, Al, Ca impurities. Precision Grinding, Fine Ceramics, and Specialty Refractories.
Key Performance Metrics
| PROPERTY | TYPICAL PERFORMANCE | MECHANISM OF ADVANTAGE |
|---|---|---|
| Hardness | HIGHEST | Ensures maximum wear resistance in refractory and abrasive use. |
| Chemical Inertness | SUPERIOR | Resists corrosive attack in chemically demanding environments. |
| Thermal Conductivity | EXCELLENT | Allows for superior thermal shock performance in kiln furniture and furnace components. |
Silicon Carbide Green
- Green vs. Black SiC (The Purity Factor)
While both are highly functional, the choice depends on the required purity and cost:
- Black SiC (~98% SiC): Used for bulk refractory aggregates, general-purpose abrasives, and applications where cost-effectiveness is a factor. Its dark color comes from trace amounts of iron and silicon oxides.
- Green SiC (>99% SiC): Used for premium products. Its higher purity improves chemical stability, refractoriness, and electrical resistance. This is vital in certain chemical reactors or electrical heating elements.
- Applications in Specialty Refractories
Due to its cost and purity, Green SiC is typically reserved for specialized applications:
- High-Purity Ceramics: Used in the production of high-value ceramic components, such as seals, bearings, and kiln furniture where the residual iron from Black SiC would cause defects or contamination.
- Abrasives: The primary market for Green SiC is in bonded and coated abrasives for grinding extremely hard materials (e.g., cemented carbides, ceramics, glass) where its sharp, clean grain structure is superior.
- Advanced Refractories: Employed in the lining of chemical process vessels or furnace components (e.g., thermocouple protection tubes) where even trace metallic impurities must be minimized to prevent catalysis or reaction with the process stream.
- Technical Guidance
In refractory applications, Green SiC is processed and bonded using the same methods as Black SiC (e.g., Clay-bonded, Nitride-bonded, Sialon-bonded) but results in a product with a guaranteed higher chemical resistance and thermal stability.
✨ 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. |
