Product Overview
Silicon Carbon (Si-C) is a composite alloy material mainly composed of silicon (Si) and carbon (C). It has been developed as an affordable and efficient alternative to traditional ferroalloys such as ferrosilicon, silicon carbide, and recarburizers.
💡 The cost-effective version of Silicon Carbon is optimized to reduce production costs while still delivering high performance in deoxidation, carbon enhancement, and slag control during steelmaking and casting. It is widely used in steel mills, foundries, and smelting plants.
Specification
Silicon Carbon is available in multiple grades and forms to suit various metallurgical applications:
🔩 Chemical Composition (Typical Grades)
| Grade | Si (%) | C (%) | S (%) | P (%) |
|---|---|---|---|---|
| Si60C15 | ≥60 | ≥15 | ≤0.05 | ≤0.05 |
| Si65C18 | ≥65 | ≥18 | ≤0.05 | ≤0.05 |
| Si68C20 | ≥68 | ≥20 | ≤0.05 | ≤0.05 |
| Customized | As required | As required | ≤0.05 | ≤0.05 |
🧱 Other trace elements like Al, Ca, and Fe can be controlled based on your furnace requirements.
📦 Product Size
Lumps: 10–100 mm
Granules: 3–10 mm
Powder: 0–3 mm
(Custom sizes available)
📦 Packing
1MT jumbo bags
25kg woven bags with PE liner
Bulk delivery on request
Quality Testing Data
All silicon carbon batches undergo strict quality control, including:
🧪 Laboratory Tests
XRF (X-ray fluorescence) for Si, C, S, and P analysis
Moisture testing to ensure stability
Particle size distribution for consistency
Thermal reactivity tests for process compatibility
📈 Typical QC Results (Sample Batch)
| Test Parameter | Result | Standard |
|---|---|---|
| Silicon (Si) | 66.8% | ≥65% |
| Carbon (C) | 18.7% | ≥18% |
| Sulfur (S) | 0.035% | ≤0.05% |
| Phosphorus (P) | 0.026% | ≤0.05% |
| Moisture | 0.3% | ≤0.5% |
✅ Each shipment includes a Certificate of Analysis (COA).
Application of Silicon Carbon
🏗️ Steelmaking
- As a cost-saving deoxidizer, it replaces ferrosilicon and recarburizers.
- Applied in converter steelmaking, EAF (electric arc furnace), and LF refining.
- Improves steel purity, reduces inclusions, and enhances ductility and strength.
🧱 Foundry Industry
- Used in gray iron, ductile iron, and carbon steel castings.
- Enhances graphite structure and improves metal fluidity.
⚙️ Ferroalloy Production
- Acts as a base alloy or additive material.
- Helps maintain elemental balance during secondary metallurgy.
🔄 Recycling Metallurgy
- Used in scrap steel smelting for cost-effective alloying and carbon recovery.
Main Functions
💨 1. Efficient Deoxidation
- Silicon reacts with oxygen in molten metal, forming SiO₂ slag and purifying steel.
- Reduces reliance on ferrosilicon, thus cutting costs.
♻️ 2. Carbon Recovery
- Carbon enriches molten steel or iron, improving hardness and toughness.
- Enhances graphite nucleation in cast iron.
🧲 3. Slag Optimization
- Promotes clean slag formation, aiding in better impurity removal.
- Improves melting fluidity and energy efficiency.
💰 4. Cost Reduction
- Combines the roles of multiple materials (Si, C, and minor Fe).
- Helps lower alloying costs and reduce material inventory.
Summary
🎯 Cost-effective silicon carbon is a strategic metallurgical solution that enables steel and casting producers to:
- Optimize quality
- Reduce material and processing costs
- Improve operational efficiency
- Maintain environmental compliance 🌍
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