High-purity 15% milled ferrosilicon (FeSi 15) serves as the primary heavy medium for modern Dense Media Separation (DMS) slurries. However, low-grade iron-silicon powders oxidize quickly and degrade fast. This causes high media consumption, poor separation accuracy, and frequent pipe blockages in processing plants.

We produce premium ferrosilicon powder with optimized chemistry and tight particle sizing. Our products offer exceptional corrosion resistance to solve key operational and cost challenges.

Key Applications Solved by 15% Milled Ferrosilicon

1. Diamond Mining with 15% Milled Ferrosilicon

• Industry Pain Point: Diamond recovery requires precise slurry density control. Low-quality powders settle rapidly and form aggregates in circulating slurries. These density fluctuations cause costly gemstone losses in tailings or diluted concentrate grades.

• 15% Milled Ferrosilicon Solution: Our 15% milled ferrosilicon features a stable true specific gravity of 6.8–7.1 g/cm³. It creates a uniform suspension that maintains cut-point densities up to 3.4 g/cm³. This stability eliminates tailing losses and boosts gemstone recovery rates.

2. Scrap Metal Recycling using Milled Ferrosilicon Powder

• Industry Pain Point: Sink-float separation of non-ferrous metals in ASR and WEEE recycling is challenging. Irregular particle shapes and high viscosity cause media to stick to scrap surfaces. This increases drag-out losses and replacement costs.

• 15% Milled Ferrosilicon Solution: Engineered with optimized micro-flake morphology, our 15% milled ferrosilicon powder reduces fluid viscosity. This structure minimizes media adhesion on scrap surfaces. It cuts operating costs by 15%–25% per ton while delivering clean non-ferrous metal separation.

3. Mineral Beneficiation & Dense Media Separation

• Industry Pain Point: Complex mine water chemistry and fluctuating pH cause standard powders to oxidize rapidly. This leads to lost magnetism, lower recovery rates, and severe pipeline clogging.

• 15% Milled Ferrosilicon Solution: We strictly control silicon content within the optimal 14.0%–16.0% range. A dense oxide film forms naturally on every particle surface. It maintains wet magnetic recovery rates above 99.5% and extends media operating life.

4. Welding Electrode Production with Ferrosilicon

• Industry Pain Point: Specialty welding flux coatings require ultra-pure raw materials. Excessive sulfur or phosphorus impurities cause weld seam porosity, hot cracking, and arc instability. This degrades overall joint strength.

• 15% Milled Ferrosilicon Solution: Our high-purity grades feature ultra-low carbon (C ≤ 0.20%), phosphorus (P ≤ 0.05%), and sulfur (S ≤ 0.02%). Operating as an effective deoxidizer, it enhances flux coating flowability and overall weld quality.

Quality Advantages of Our 15% Milled Ferrosilicon

• 100% Virgin Smelting (Zero Scrap Contamination): We produce our powder from high-purity quartz and virgin iron in electric arc furnaces. We never blend low-grade scrap steel, ensuring consistent chemical purity.

• Precise Particle Size Classification: Advanced air classification delivers tight particle size distribution curves. Available grades include 65D, 100D, 270D, and 270F, completely eliminating oversized particles.

• High Corrosion Resistance & Magnetic Recovery: Passive anti-oxidation treatments ensure excellent resistance to aqueous corrosion. Tested magnetic recovery rates exceed 99.5%, cutting daily top-up requirements.

• ISO Certified Quality Control: Every shipment undergoes rigorous laboratory testing. We supply a full Certificate of Analysis (COA) audited under ISO 9001 Certification standards.

Contact Our 15% Milled Ferrosilicon Experts

Are high media losses or inefficient separation affecting your plant's bottom line? Contact our metallurgical team today. We provide full technical specifications, sizing curves, and bulk commercial quotes.