Product Introduction
Silicon Slag, also known as off-grade silicon or silicon by-product, is a valuable material recovered during the production of ferrosilicon and metallic silicon. Although it is a by-product, it retains a considerable amount of elemental silicon and other useful components, making it a cost-effective solution for steelmaking, casting, and alloy manufacturing. It is commonly used as a deoxidizer, slag conditioner, and silicon additive in metallurgical processes.
Specifications
| Chemical Component | Typical Range (%) |
|---|---|
| Silicon (Si) | 30% – 65% |
| Calcium (Ca) | 1% – 5% |
| Aluminum (Al) | ≤ 3% |
| Carbon (C) | ≤ 6% |
| Sulfur (S) | ≤ 0.10% |
| Phosphorus (P) | ≤ 0.05% |
| Size | 0–10mm / 10–50mm / customized |
| Packaging | Jumbo bags / per customer request |
Advantage
✅ High Silicon Utilization – Excellent performance in deoxidation with low consumption.
✅ Cost-Efficient – Offers a cheaper alternative to pure ferrosilicon or silicon metal.
✅ Environmentally Friendly – Promotes resource reuse, reducing production waste.
✅ Versatile Granularity – Available in lump or powder to suit different furnace types.
✅ Stable Quality – Consistent chemical composition ensured through strict QC systems.
Application
🔧 Steelmaking – Acts as a deoxidizer, improving purity and reducing oxygen levels in molten steel.
🔥 Casting Industry – Enhances the fluidity of molten iron and helps in achieving better casting surfaces.
⚙️ Ferroalloy Production – Used as a low-cost source of silicon for producing ferrosilicon and other alloys.
♻️ Recycling Processes – Supports environmentally friendly practices by reusing industrial silicon by-products.
Company Introduction
We are a trusted supplier with over 20 years of experience in exporting ferroalloys worldwide. Backed by a well-established supply chain and deep industry knowledge, we supply a wide range of high-quality products, including:
Ferro Silicon 72/75
High Purity FeSi
MC FeMn, LC FeMn, LC FeCr
Silicon Metal (Standard & Off-Grade)
Calcium Silicon, FeSiBa, FeSiMg
Silicon Carbide (SiC), Graphite Petroleum Coke (GPC)
Cored Wire (CaSi, FeTi, CaFe, etc.)
FAQ
Q1: Is silicon slag the same as silicon metal?
No! Silicon slag is a by-product with lower purity (30%-70% Si), while silicon metal has ≥98% Si.
Q2: How is silicon slag produced?
It's obtained during the smelting process of silicon metal or ferrosilicon, where impurities separate and form slag.
Q3: Can silicon slag replace ferrosilicon?
Partially! It's a cost-effective alternative but has lower silicon content, so adjustments in dosage may be needed.
Q4: What's the best silicon content for steelmaking?
50%-65% Si is ideal for efficient deoxidation and alloying.
Q5: How should silicon slag be stored?
Keep in a dry, ventilated place to avoid moisture absorption.
Looking for a cost-saving, high-performance alternative in your metallurgy line? Silicon Slag delivers value, performance, and sustainability.
📧 E-mail: goldenltd.silicon@gmail.com
📞 WhatsApp: +8616663721147
Let us know your required grade or specifications - we offer tailored solutions for your industry needs.
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