Product Overview
Best Recarburizer is a premium, high-efficiency carbon additive designed for the modern foundry and steelmaking industry. Manufactured from high-grade calcined anthracite and graphite petroleum coke (GPC), it delivers exceptional carbon recovery rates, ultra-low sulfur and nitrogen content, and rapid dissolution. Whether you are producing ductile iron, grey iron, or special steel grades, our recarburizer ensures precise carbon control, reduced production costs, and superior metallurgical results.
Key Features & Benefits
| Parameter | Value | Benefit |
|---|---|---|
| Fixed Carbon (FC) | 98.5% – 99.5% | Maximizes carbon absorption, reduces addition amount |
| Sulfur (S) | ≤ 0.05% | Prevents brittleness, ideal for ductile & nodular iron |
| Nitrogen (N) | ≤ 0.03% | Eliminates nitrogen-induced porosity defects |
| Ash Content | ≤ 0.8% | Minimizes slag formation, improves furnace efficiency |
| Moisture | ≤ 0.5% | Stable performance, no hydrogen pickup |
| Granulation | 0.2-1mm / 1-5mm / 5-10mm | Customizable for induction furnace, ladle, or EAF use |
✅ Rapid Dissolution – Fully dissolves within 10–15 minutes at 1480–1520°C.
✅ High Carbon Recovery – 92%–96% recovery rate under normal operating conditions.
✅ Graphitization Degree – >85% (for GPC type), ensuring excellent nucleation sites for graphite precipitation.
✅ Environmentally Friendly – Low dust generation and smoke emissions.
Applications
Ductile Iron (Nodular Iron) – Provides consistent carbon equivalent, prevents chilling tendency.
Grey Iron (GCI) – Improves tensile strength and machinability.
Steelmaking (EAF/Ladle) – Fine-tuning carbon content in low-sulfur steel grades.
Friction Materials & Brake Linings – As a lubricating carbon filler.
📊 Case Study: Ductile Iron Foundry in Germany
Customer Profile:
A mid-sized automotive foundry producing differential housings and brake calipers from EN-GJS-400-15 (ductile iron). They previously used a low-grade anthracite recarburizer (FC 92%, S 0.25%) and struggled with inconsistent carbon recovery (75–82%) and high rejection rates due to micro-shrinkage and sulfur-induced spheroidization decay.
Challenge
Unstable carbon absorption → frequent adjustments to charge mix.
High sulfur carryover → increased MgFeSi consumption (1.2% vs standard 0.9%).
Rejection rate of 5.2% due to porosity and degraded nodularity (less than 80% nodularity).
Longer melting cycle (+15 minutes) to dissolve low-quality carbon.
Solution Provided
We replaced their existing recarburizer with Best Recarburizer – Graphitized Petroleum Coke (1-5mm, FC 99.1%, S 0.03%, N 0.02%) , maintaining the same addition rate of 1.8% by charge weight.
Results (After 30 Production Runs)
| Metric | Before (Competitor) | After (Best Recarburizer) | Improvement |
|---|---|---|---|
| Average Carbon Recovery | 79% | 94.5% | +15.5% |
| Final Sulfur Content | 0.018% | 0.008% | -56% |
| MgFeSi Addition Rate | 1.15% | 0.85% | -26% cost saving |
| Nodularity (ASTM A247) | 75–80% | 92–95% | Defect elimination |
| Rejection Rate | 5.2% | 1.1% | -78% scrap reduction |
| Melting Cycle Time | 62 min | 49 min | -21% energy saving |
Customer Testimonial
"Switching to Best Recarburizer reduced our monthly scrap cost by €12,000 and cut our MgFeSi usage by nearly 30%. The consistent dissolution allows us to hit target carbon within 5 minutes of sampling. This product is now our foundry's standard."
- Hans Meier, Senior Metallurgist, German Automotive Foundry
Technical Data Sheet (Typical Values)
| Property | Calcined Anthracite | Graphitized Petroleum Coke |
|---|---|---|
| Fixed Carbon (%) | 98.5 | 99.2 |
| Sulfur (%) | 0.05 | 0.03 |
| Nitrogen (ppm) | ≤ 300 | ≤ 200 |
| Ash (%) | 1.0 | 0.7 |
| Volatile Matter (%) | 0.4 | 0.3 |
| Bulk Density (g/cm³) | 0.68 | 0.72 |
Why Choose Best Recarburizer?
🏭 ISO 9001:2025 Certified Production – Strict SPC control from raw material to final sieving.
📦 Flexible Packaging – 25 kg bags, 1 MT jumbo bags, or bulk container liners.
🚢 Global Logistics – Ready stock in Rotterdam, Houston, and Shanghai. Lead time: 7–14 days worldwide.
🔬 Pre-shipment Testing – Every batch includes a certificate of analysis (COA) with carbon, sulfur, and nitrogen values.
Ordering Information
| Product Code | Type | Grain Size | Typical Use |
|---|---|---|---|
| BR-GPC-01 | Graphitized Petroleum Coke | 0.2–1 mm | Ladle addition, fine tuning |
| BR-GPC-05 | Graphitized Petroleum Coke | 1–5 mm | Induction furnace (ductile iron) |
| BR-CA-05 | Calcined Anthracite | 1–5 mm | Grey iron, cupola |
| BR-CA-10 | Calcined Anthracite | 5–10 mm | EAF bulk addition |
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