Product Description
Recarburizer is an additive used in steel smelting and casting processes to supplement carbon content in molten metal. Its primary role is to adjust the carbon content in metals to a target range, optimizing their mechanical properties (e.g., hardness, strength) and processability. It is primarily composed of carbon (C), typically produced via graphitization, calcination, or similar processes, with low levels of impurities (ash, sulfur, nitrogen, etc.).High fixed carbon (≥85%, up to 98% for premium grades).
- High fixed carbon (≥85%, up to 98% for premium grades).
- Low impurities (S≤0.05%, ash≤5%) to avoid contamination.
- Good reactivity, with carbon absorption rates of 60%-95% (varies by type).
- Stable, non-hygroscopic, and available in various particle sizes.
Applications
- Steelmaking: Adjusts carbon levels in electric/converter furnaces to enhance hardenability and wear resistance.
- Casting: Boosts carbon in gray/ductile iron to improve machinability and graphite formation.
- Other: Used in powder metallurgy (as carbon source) and welding materials (to optimize welds).
Specifications
| Type | Raw Material | Fixed Carbon | Main Impurities |
| Graphitized Recarburizer | Petroleum coke, pitch coke | ≥98% | S≤0.05%, Ash≤1%, N≤0.02% |
| Calcined Petroleum Coke Recarburizer | Petroleum coke (calcined) | 90%-95% | S≤0.5%, Ash≤3%, N≤0.3% |
| Calcined Coal Recarburizer | Anthracite (high-temperature calcined) | 85%-90% | S≤0.3%, Ash≤8%, Volatiles≤1% |
| Natural Graphite Recarburizer | Natural flake graphite | 90%-95% | S≤0.1%, Ash≤5%, Moisture≤0.5% |