Low Aluminum Ferro Silicon
Low Aluminum Ferro Silicon (FeSi-Al-Low) is a high-purity deoxidizer engineered for clean steelmaking and specialized casting processes. Refined through ladle-furnace vacuum processing and strict raw material selection, this alloy limits aluminum content to Al ≤ 0.1% – 0.5%, significantly reducing non-metallic inclusions and nozzle clogging in continuous casting.
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Product Introduction
Low Aluminum Ferro Silicon (FeSi-Al-Low) is a high-purity deoxidizer engineered for clean steelmaking and specialized casting processes. Refined through ladle-furnace vacuum processing and strict raw material selection, this alloy limits aluminum content to Al ≤ 0.1% – 0.5%, significantly reducing non-metallic inclusions and nozzle clogging in continuous casting.
The Difference Between Low Aluminum Ferro silicon and Ordinary Ferro silicon
|
Comparison Dimension |
Low-Aluminum Ferrosilicon |
Regular Ferrosilicon |
|
Aluminum Content |
≤0.3% (≤0.05% for some premium grades) |
0.5%~1.5% |
|
Raw Material Requirements |
Low-aluminum silica + low-ash reducing agent |
Regular silica + standard reducing agent |
|
Production Process |
Submerged arc furnace smelting + external refining |
Direct carbothermal reduction in submerged arc furnace |
|
Impurity Control |
Stringent control over aluminum, carbon, phosphorus and sulfur simultaneously |
Only major impurities are controlled; no strict limits on aluminum |
|
Cost & Price |
Relatively high (20%~50% higher than regular ferrosilicon) |
Relatively low, cost-effective oriented |
Product Features
Precision Chemical Control
Minimizes alumina inclusion formation, making it suitable for ultra-clean steel grades such as electrical steel, tire cord, and bearing steel.
Enhanced Melt Recovery & Deoxidation Rate
High-purity Silicon (≥ 75%) ensures rapid dissolving, lower slag generation, and predictable elemental recovery rates during ladle refining.
Strict Mechanical Sizing & Low Fines
Double-screened processing guarantees minimal fines content (< 5%), reducing thermal loss and air draft waste during furnace feeding.
Customized Physical Forms
Supplied in uniform lumps, granules, or powder sizes to fit automated feeding systems, ladle injection, or induction furnace charging.
Customization Capabilities
Tailored Chemical Composition: Precise adjustment of Al, C, P, S, and trace element limits according to specific steelmaking formulas.
Custom Sizing & Distribution: Fine-mesh powders, specific lump ranges (e.g., 10–30mm, 20–80mm), or tight tolerance screening.
Specialized Packaging: Customized Jumbo Bags, steel drums, vacuum packaging, or private label/logo printing for distributors.
Customization Workflow
Requirement Definition: Submit your chemical analysis targets (COA specs), size limits, and packaging requirements.
Sample & Lab Verification: Small-batch trial production and internal/third-party lab validation to issue a pre-shipment COA.
Batch Production & Quality Hold: Smelting, vacuum refining, and screening under strict batch-wise QC monitoring.
Final Inspection & Delivery: Moisture-proof sealing, lot barcode tagging, and container dispatch with complete batch traceability docs.
Manufacturing & Quality Control
Vacuum Ladle Refining
Smelted in submerged arc furnaces and refined via LF vacuum degassing to continuously lower volatile impurities and precisely control light-element levels.
Rapid Pre-Tap Analysis
Molten metal composition is analyzed in real time using XRF and ICP spectrometers before tapping, ensuring absolute metallurgical accuracy before casting.
Mechanical Screening & Dust Control
Cooled alloy blocks undergo multi-deck mechanical screening to control specific size fractions and pneumatically remove sub-micron dust prior to bagging.
Full Lot Traceability
Each bag is tagged with a digital barcode tracking the underlying raw material batch, furnace heat number, screening line, and packaging time.
Why Partner with Anyang Jingfengyuan Ferroalloy?
31-Year Metallurgical Lineage: Established in 1995, we leverage over three decades of manufacturing experience and 22+ senior engineers to offer tailored alloy ratios and tight tolerance controls.
Scalable Output & Fast Delivery: 80,000+ m² manufacturing base with 8+ dedicated production lines, ensuring an annual output of tens of thousands of tons for bulk orders.
Advanced & Mechanized Production: Equipped with upgraded medium-frequency induction furnaces and fully automated workflows for consistent chemical uniformity.
Certified Quality Assurance: Full batch traceability under ISO 9001, ISO 14000, and GJB 9001 standards, backed by complete in-house lab testing.
Global Logistics & Export Reach: Proven export track record with reliable fulfillment, serving industrial clients across 86+ countries.
Pakistani Clients Visit Our Company To Deepen Cooperation in The Ferroalloy Sector
FAQ
Q: What is the exact Aluminum (Al) content limit in your Low Al Ferro Silicon?
A: We offer standard grades with Al ≤ 0.1%, Al ≤ 0.2%, and Al ≤ 0.5%. Custom aluminum thresholds can be produced upon request based on your specific metallurgical requirements.
Q: How does Low Al FeSi prevent nozzle clogging during continuous casting?
A: Standard FeSi contains higher aluminum, which forms solid alumina inclusions during steel deoxidation. These particles accumulate inside tundish nozzles. By keeping Al ≤ 0.1%, our refined alloy substantially lowers inclusion density, ensuring smooth continuous casting runs.
Q: What particle sizes are available, and how are fines controlled?
A: Common sizes include 10–50 mm, 10–100 mm, and 1–3 mm granules. All products undergo a mechanical screening process before packing to ensure fines (< 2 mm) remain strictly below 5%.
Q: What quality documentation is included with each shipment?
A: Every shipment includes an official Factory Certificate of Analysis (COA) detailing the exact XRF/ICP chemical composition, size distribution test results, and batch heat numbers.
Q: What steel grades strictly require Low Aluminum Ferro Silicon?
A: It is widely used in Oriented Electrical Steel (Silicon Steel), Tire Cord Steel, Stainless Steel, High-Tension Alloy Steels, and automotive sheet metals where total inclusion counts must be minimized.
Q: What packaging options do you provide for moisture prevention?
A: We supply 1-Metric-Ton (1000 kg) waterproof Jumbo Bags with inner plastic liners, secured on fumigated wooden pallets or bulk-packed in dry containers to prevent oxidation during transit.
Q: What is your custom order minimum quantity (MOQ) and lead time?
A: MOQ for custom chemical or sizing grades is 20 Metric Tons (one 20ft container). Lead time for custom production is 12–15 days from technical spec freeze.
Q: What is the shelf life and storage recommendation for this alloy?
A: Stored in a dry, covered warehouse, Low Aluminum Ferro Silicon has an indefinite shelf life. Keep packages sealed until use to protect against atmospheric moisture exposure.
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