Silicon Carbide 85% For Refractories
With SiC ≥85%, Fe2O3 ≤1.5%, F.C ≤2.0% and moisture ≤0.5%, it provides a practical balance between wear resistance, thermal shock stability and raw material cost.
Available particle sizes include 0-1 mm, 1-3 mm, 0-5 mm, 3-5 mm and 5-10 mm. Custom sizing, 25 kg bags, 1 MT jumbo bags and FOB/CIF shipping options are available for bulk refractory material buyers.
Send us your required size, quantity, application and destination port to get a quotation.
Product Introduction
Silicon carbide 85% for refractories is a black refractory-grade silicon carbide material with SiC content of 85% min. It is commonly used as an aggregate or functional additive in refractory castables, furnace linings, refractory bricks, ramming mixes and other high-temperature wear-resistant refractory products.
In refractory production, SiC 85% is mainly selected to improve abrasion resistance, thermal shock stability, high-temperature strength and service performance. Compared with SiC 75%, it offers higher effective silicon carbide content and more stable performance in demanding refractory applications. Compared with higher-purity SiC grades, it provides a more cost-effective option for industrial refractory production.
For refractory manufacturers and bulk buyers, the key purchasing factors are SiC content, Fe2O3 level, free carbon, moisture and particle size distribution. Common particle sizes include 0-1 mm, 1-3 mm, 0-5 mm, 3-5 mm and 5-10 mm, and customized sizes can be supplied according to different refractory formulations.
If you are sourcing Silicon Carbide 85% for refractories, please send us your required particle size, quantity, application and destination port. We can recommend a suitable specification and provide a quotation based on your actual use.
Typical Specifications of Silicon Carbide 85% for Refractories
| Item | Typical Value |
|---|---|
| SiC Content | 85% min |
| Fe2O3 | 1.5% max |
| F.C | 2.0% max |
| Moisture | 0.5% max |
| Size | 0-1 mm, 1-3 mm, 0-5 mm, 3-5 mm, 5-10 mm, or as required |
| Color | Black / dark gray |
| Packing | 25 kg bags, 1 MT jumbo bags, or customized packing |
Recommended Particle Sizes for Refractory Applications
| Particle Size | Common Use | Buyer Notes |
|---|---|---|
| 0-1 mm | Fine refractory mixes, castable matrix adjustment | Helps improve filling and formulation consistency |
| 1-3 mm | Refractory castables, ramming mixes | Common balance between workability and wear resistance |
| 0-5 mm | General refractory aggregate blends | Suitable for mixed-size refractory formulations |
| 3-5 mm | Furnace lining, high-wear zones | Better for areas requiring stronger abrasion resistance |
| 5-10 mm | Refractory bricks, furnace lining, coarse aggregate use | Often used where larger aggregate structure is required |
| Custom size | Special refractory formulations | Recommended when buyers have specific recipe requirements |
Main Applications of Silicon Carbide 85% for Refractories
Silicon Carbide 85% for refractories is mainly used in refractory products that require better abrasion resistance, thermal shock stability and high-temperature performance. The suitable application depends on particle size, refractory formulation and working conditions.
Refractory Castables
SiC 85% can be used in refractory castables to improve wear resistance and thermal stability. Fine and medium sizes such as 0-1 mm, 1-3 mm and 0-5 mm are commonly selected for castable formulations.
Furnace Lining Materials
For furnace lining materials, Silicon Carbide 85% helps improve resistance to heat, mechanical wear and thermal stress. Coarser sizes such as 3-5 mm and 5-10 mm may be used when stronger aggregate structure is required.
Ramming Mixes
In ramming mixes, SiC 85% can support better compactness, hardness and wear resistance after installation. Buyers should confirm the required particle size distribution according to the lining area and bonding system.
Refractory Bricks
Silicon Carbide 85% can be used in selected refractory brick formulations to improve wear resistance and high-temperature stability. Fine particles help the matrix structure, while larger particles support aggregate strength.
High-Wear Refractory Zones
SiC 85% is suitable for refractory areas exposed to slag erosion, hot gas flow, solid material movement or mechanical abrasion. For these conditions, SiC content, impurity level and particle size should all be checked before ordering.
Silicon Carbide 85% vs 75% for Refractories
For refractory buyers, choosing between Silicon Carbide 85% and Silicon Carbide 75% depends on working temperature, abrasion level, thermal shock requirements and cost target. SiC 85% is usually preferred for higher-performance refractory castables, furnace linings and wear-resistant refractory products, while SiC 75% may be more suitable for cost-sensitive or standard refractory formulations.
If you are comparing these two grades, read our detailed guide: Silicon Carbide 85% vs 75%: Which Grade Is Better for Refractories.
Quality Control
We pay attention to product consistency and supply stability to support industrial refractory use. Before shipment, the material can be checked according to agreed specifications, including chemical composition, size distribution, and packaging condition.
For buyers, stable supply and consistent raw material quality are important factors in refractory production, especially for repeated orders and long-term use.
Supply & Delivery
- MOQ: 1 ton
- Lead time: About 15 days for stock goods
- Sample: Free sample available, buyer pays shipping cost
- Supply mode: Spot supply and long-term supply cooperation are available
- Quotation basis: Particle size, quantity, packing, destination port and trade term
For urgent orders or repeated purchases, please send your required specification, monthly demand and destination port. We can help check available stock, suitable particle size and delivery arrangement.
Packaging & Logistics
Standard packing options include 25 kg bags and 1 MT jumbo bags. Customized packing can also be discussed for bulk orders or special warehouse requirements.
- 25 kg bags for flexible handling and small-batch use
- 1 MT jumbo bags for bulk refractory material buyers
- Moisture-proof protection for safer storage and transportation
- FOB and CIF shipping terms available
- Loading photos and shipping documents can be provided before shipment
FAQ
Q: What is Silicon Carbide 85% for refractories used for?
A: It is mainly used in refractory castables, furnace linings, ramming mixes, refractory bricks and high-wear refractory zones. Its main role is to improve abrasion resistance, thermal shock stability and high-temperature performance.
Q: Is Silicon Carbide 85% suitable for refractory castables?
A: Yes. SiC 85% can be used in refractory castables to improve wear resistance and thermal stability. Common particle sizes include 0-1 mm, 1-3 mm and 0-5 mm, depending on the formula.
Q: What particle size should I choose?
A: Fine sizes such as 0-1 mm and 1-3 mm are often used for castables and matrix adjustment. Coarser sizes such as 3-5 mm and 5-10 mm may be used for furnace linings, bricks or high-wear areas.
Q: What is the difference between Silicon Carbide 85% and 75%?
A: SiC 85% has higher effective silicon carbide content and generally offers better wear resistance and thermal shock stability. SiC 75% is usually more economical for standard refractory applications.
Q: What affects the price of Silicon Carbide 85%?
A: The price depends on SiC content, impurity level, particle size, order quantity, packing method and shipping cost. Larger bulk orders usually allow more flexible pricing.
Q: Do you support bulk supply?
A: Yes. We support bulk industrial orders and long-term cooperation. Please send your required size, quantity, application and destination port for quotation.
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