Metallurgical SiC 88 Grains Inoculant
Dual-Action Efficiency: Simultaneously increases Silicon and Carbon levels, replacing two additives with one.
Cost Optimization: High-performance alternative to expensive ferrosilicon (FeSi) with up to 30% lower cost per ton.
Eliminate Defects: Significantly reduces "chilling" and shrinkage in thin-walled gray and ductile iron castings.
Energy Recovery: Exothermic reaction during deoxidation reduces furnace electricity consumption.
Global Supply Chain: Factory-direct bulk supply with guaranteed 7-14 day lead times and SGS/BV certification.
Description
Metallurgical SiC 88 Grains Inoculant - ZhenAn International
What are Metallurgical SiC 88 Grains?
In high-volume iron and steel production, managing the graphite morphology and chemical stability of the melt is critical. Traditional carbon raisers and silicon alloys often lead to inconsistent recovery rates and increased slag volume, which drives up the cost of "good" castings.
ZhenAn's Metallurgical SiC 88 Grains are engineered as a high-density nucleating agent and deoxidizer. Produced in electric resistance furnaces, this 88% purity silicon carbide is crushed into precision grains to ensure rapid dissolution and maximum surface area reaction. It is the industry standard for foundries seeking to produce high-strength ductile and gray iron without the premium price of 98% grades.
Technical Specifications & Chemical Analysis
Our SiC 88 grains are strictly monitored for chemical consistency to ensure predictable results in every heat.
| Chemical Component | Specification (Grade 88) |
| SiC Content | ≥ 88.0% |
| Free Carbon (F.C.) | ≤ 4.5% |
| Fe2O3 | ≤ 2.0% |
| Al2O3 | ≤ 1.5% |
| Moisture | ≤ 0.5% |
| Bulk Density | 1.35 – 1.55 g/cm³ |
The Role of SiC 88 as a High-Efficiency Inoculant
For cast iron foundries, SiC 88 grains function as a superior inoculant compared to traditional ferrosilicon:
Nucleation Power: It provides stable silicon-carbide nuclei that persist longer in the melt, effectively preventing "fading" during long pouring cycles.
Chilling Prevention: By promoting graphitization, it eliminates hard iron carbides in thin sections, ensuring the casting remains machinable.
Cleaner Melt: The deoxidation byproduct is a gaseous CO or solid SiO2 that easily floats into the slag, leaving behind a cleaner metal matrix.
Thermodynamic Advantages in Modern Smelting
Using SiC 88 grains provides a distinct thermodynamic edge:
Heat Generation: The reaction ($SiC + 2O \rightarrow SiO_2 + C$) is highly exothermic. This chemical energy translates into reduced kilowatt-hour (kWh) usage in induction furnaces.
Predictable Recovery: Unlike petroleum coke, the carbon in SiC 88 is chemically bonded, leading to 85-95% carbon recovery rates.
Comparison: SiC 88 Grains vs. Standard Alloys
| Feature | Ferrosilicon (FeSi) | Recarburizer (Coke) | ZhenAn SiC 88 Grains |
| Primary Output | Silicon | Carbon | Si + C (Balanced) |
| Price Point | High | Low | Optimal ROI |
| Inoculation Effect | Fades Quickly | None | Long-Lasting / Stable |
| Slag Production | Moderate | High | Low |
Available Grain Sizes (1-3mm, 1-10mm)
Physical size is crucial for dissolution speed. ZhenAn provides:
1-3mm Grains: Optimized for ladle inoculation and precise chemistry adjustments.
1-10mm Grains: Best for furnace charging in medium-sized induction units.
0-5mm Fine Grains: Used in specialized refractory and coating mixtures.
Custom screening and sizing are available for bulk orders.
Why Source from ZhenAn International?
ZhenAn International is a trusted partner for metallurgical plants worldwide.
Annual Output: 150,000+ tons ensures stability for long-term supply contracts.
Quality Verification: We provide internal lab reports and support third-party SGS/BV testing for every shipment.
Logistics Network: Expert handling of bulk shipments to the USA, Saudi Arabia, Germany, South Korea, and Southeast Asia.
Technical Consulting: Our engineers assist in calculating the exact SiC/C replacement ratios for your specific furnace.
Comprehensive FAQ Section
1. Is SiC 88 pure enough for high-grade ductile iron?
Yes. While 90% or 95% grades exist, SiC 88 is the "workhorse" grade for most ductile iron applications, providing sufficient nucleation without the high cost of ultra-purity grades.
2. How do SiC 88 grains reduce my energy costs?
The reaction of SiC with oxygen is exothermic, meaning it releases heat into the melt. This reduces the burden on your furnace's electrical heating elements.
3. What is the typical addition rate for gray iron?
Generally, 0.5% to 1.2% of the charge weight is recommended. We can provide a specific dosing sheet based on your base iron chemistry.
4. Can I use SiC 88 to replace 100% of my Recarburizer?
In many induction furnace setups, SiC 88 can replace a significant portion (50-70%) of the recarburizer, but it depends on your final Carbon Equivalent (CE) target.
5. How are the 1-3mm grains packaged for export?
Standard packaging is 1-ton or 1.25-ton waterproof jumbo bags with inner liners. We also offer 25kg bags upon request for manual dosing.
6. Does ZhenAn provide trial samples for metallurgical testing?
Yes. We support technical trials by providing 1-5kg samples for lab analysis or small-scale furnace tests.
Contact Our Specialist Team
Reach out to ZhenAn International for factory-direct pricing and technical documentation tailored to your production.
Company: ZhenAn International Co., Ltd.
Email: info@zaferroalloy.com
WhatsApp: +8615518824805
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