Metallurgical Silicon Carbide (SiC 88%) 1-3mm: The High-Efficiency Deoxidizer for Modern Foundries
Steel plants and foundry operators often struggle with the rising costs of traditional ferroalloys like Ferrosilicon (FeSi). Moreover, achieving a precise balance of carbon and silicon in induction furnaces can be a logistical headache. Metallurgical Grade Silicon Carbide (SiC 88%) in the 1-3mm size range offers a high-performance, cost-effective alternative that synchronizes deoxidation and recarburization in one step.
Composition and Specifications of SiC 88%
Our 88% grade is engineered for chemical stability. The 1-3mm grain size ensures a controlled surface area for optimal reaction rates in molten metal, preventing excessive oxidation before dissolution.
| Parameter | Specification |
| SiC Content | ≥ 88% |
| Free Carbon (C) | ≤ 4.5% |
| Fe₂O₃ | ≤ 2.0% |
| Al₂O₃ | ≤ 1.5% |
| Moisture | ≤ 0.5% |
| Particle Size | 1–3 mm (Customizable) |
Why the 1-3mm Particle Size Matters?
The 1-3mm size is the "sweet spot" for many metallurgical processes, particularly in Induction Furnaces and Ladle Metallurgy:
Rapid Dissolution: Smaller than typical lumps (10-50mm), 1-3mm grains dissolve faster, significantly reducing processing time and improving furnace turnover.
Minimal Dust Loss: Unlike fine powder (0-1mm), the 1-3mm grains are heavy enough to penetrate the slag layer effectively without being drawn away by exhaust systems.
Uniform Distribution: This specific grit size provides a consistent chemical recovery rate across the entire melt, ensuring no "dead zones" in the alloy composition.
Key Industrial Applications
1. Gray and Ductile Iron Foundries
SiC 88% acts as a powerful nucleating agent. It increases the graphite flake count and promotes a more uniform structure, reducing the risk of "chill" or hard spots in castings, which improves machineability.
2. Steelmaking Deoxidation
In EAF or BOF processes, SiC 88% reacts intensely with dissolved oxygen:
This reaction is exothermic, helping to maintain or even slightly increase the melt temperature, which leads to energy savings per ton of steel.
3. Slag Conditioning
It helps in making the slag more fluid and "short," which is easier to remove and protects the furnace refractory lining from chemical erosion.
SiC 88% vs. SiC 90%: Which One Should You Choose?
| Feature | SiC 88% (1-3mm) | SiC 90% (1-10mm) |
| Primary Use | Cost-sensitive foundries, induction furnaces | High-spec steelmaking, BOF |
| Price Point | Budget-friendly / High ROI | Premium performance |
| Reaction Speed | Fast (due to 1-3mm size) | Moderate |
| Carbon Recovery | Slightly higher free carbon | Lower total impurities |
Expert Insight: If your process allows for a slightly higher iron oxide (Fe₂O₃) tolerance, SiC 88% provides nearly identical deoxidation results to the 90% grade at a 15-20% lower procurement cost.
Operational Benefits for Foundry Managers
Significant Cost Savings: Replaces expensive Ferrosilicon and high-purity Carbon Raisers.
Improved Casting Quality: By controlling carbide formation, you extend the life of your machining tools and reduce scrap rates.
Energy Efficiency: The exothermic reaction helps reduce power consumption.
Simplified Inventory: One product handles two chemical requirements (Silicon + Carbon).
Why Source SiC 88% from ZhenAn?
ZhenAn International Co., Ltd. is a global leader in metallurgical materials with decades of export experience. We understand that in B2B trade, consistency is everything.
Precision Screening: Our advanced sieving technology ensures 95%+ of particles fall strictly within the 1-3mm range.
Rigorous Quality Control: Every batch undergoes SGS/BV inspection or internal lab testing to guarantee SiC ≥ 88%.
Strategic Logistics: Located near major ports, we ensure fast delivery in 1-ton jumbo bags with moisture-proof liners.
Expert Support: Our team provides technical guidance on addition rates to maximize your alloy recovery.
FAQ
Q: Can I use 1-3mm SiC in a Cupola furnace?
A: While possible, 1-3mm is better suited for Induction Furnaces. For Cupolas, we recommend ZhenAn SiC Briquettes to prevent material loss through the stack.
Q: What is the recovery rate of Silicon from SiC 88%?
A: Typically, silicon recovery is between 75% and 85%, depending on the furnace temperature and slag conditions.
Q: Does ZhenAn provide third-party inspection reports?
A: Yes. We regularly provide COA, SGS, and ISO certification reports to ensure our clients receive exactly what they pay for.
Request a Quote Today
Looking for high-quality SiC 88% 1-3mm to optimize your production costs?
Email: market@zanewmetal.com
WhatsApp: +8615518824805
Contact ZhenAn today for a customized CIF/FOB quote. Our technical sales experts will respond within 24 hours.
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