Product Introduction
Silicon Slag is a by-product generated during the smelting of ferrosilicon or silicon metal. Though classified as a residue, silicon slag contains a significant amount of elemental silicon, making it a cost-effective alternative to standard deoxidizers in steelmaking and alloy production. It is widely used in various metallurgical applications due to its excellent chemical composition, economic value, and environmental sustainability.
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 |

Key Features
✅ High Silicon Recovery – Delivers effective deoxidation while reducing costs.
✅ Customizable Sizes – Available in various granular forms for different furnace types.
✅ Environmentally Friendly – Utilizes waste from silicon production, contributing to green manufacturing.
✅ Good Flowability – Easy handling and blending during metallurgical operations.
✅ Stable Quality – Consistent chemical properties ensure predictable results.
Application
🏭 Steelmaking – Used as a deoxidizing agent to improve steel purity and reduce production costs.
🔥 Iron Casting – Improves molten metal fluidity, reducing casting defects and shrinkage.
🔩 Alloy Manufacturing – Acts as a low-cost silicon source in producing various ferroalloys.
♻️ Recycling Processes – Serves as a secondary raw material in eco-conscious steel plants.
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 suitable for all types of steelmaking?
🔹 Yes, it is widely used in carbon steel, stainless steel, and some special steel grades depending on the Si content required.
Q2: Can I choose the Si percentage I need?
🔹 Absolutely. We offer customized grades ranging from 30% to 65% silicon content.
Q3: What's the main benefit compared to standard ferrosilicon?
🔹 Silicon slag offers similar metallurgical performance at a significantly lower cost.
Q4: How is the product packaged and shipped?
🔹 Typically in 1-ton jumbo bags, with options for customized packaging. We handle global shipping logistics.
Q5: Do you provide free samples for testing?
🔹 Yes, samples can be provided for serious buyers upon request.
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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