Overview
Pure vanadium particles are refined metallic vanadium granules with minimal impurities (typically ≤0.5%), produced through aluminothermic reduction or calcium reduction processes. As a strategic transition metal, vanadium's unique combination of strength, corrosion resistance, and catalytic properties makes it indispensable for high-performance industrial applications. The granular form facilitates precise dosing in alloy production and chemical processes, offering superior handling compared to powder variants. Industrial grades typically range from 99.5% to 99.9% purity, with particle sizes customizable between 0.5mm to 10mm for different application requirements.
Physical and Chemical Properties
Vanadium particles exhibit a body-centered cubic (BCC) crystal structure at room temperature, contributing to their notable ductility and thermal stability. Their high melting point (1910°C) and low thermal neutron absorption cross-section (5.06 barns) make them valuable for nuclear applications. Chemically, vanadium forms a protective oxide layer in air, granting exceptional resistance to corrosion by alkalis, sulfuric acid, and seawater. However, it oxidizes above 660°C and reacts with halogens at elevated temperatures. The particles' hardness ranges between 60-70 HV (Vickers), with electrical conductivity approximately 4% of copper's IACS standard.
Main Applications
In metallurgy, vanadium particles serve as crucial additives for high-strength low-alloy (HSLA) steels and titanium alloys (e.g., Ti-6Al-4V), improving tensile strength by 100-200% at addition rates of 0.05-0.15%. The aerospace industry utilizes these alloys in landing gears and jet engine components. The chemical sector employs vanadium granules as precursors for vanadium pentoxide (V2O5) catalysts in sulfuric acid production, achieving 98% conversion efficiency. Emerging applications include redox flow batteries (VRFB) for grid-scale energy storage, where vanadium's multiple oxidation states enable exceptional electrolyte stability.
Safety and Storage
While bulk vanadium particles are relatively stable, fine dust poses inhalation risks (TLV: 0.05 mg/m³ as respirable dust). Processing requires local exhaust ventilation and NIOSH-approved particulate filters. The material is non-flammable but may react violently with strong oxidizers like nitrates. Long-term storage mandates airtight containers under argon atmosphere to prevent surface oxidation. Industrial users should monitor for vanadium pentoxide formation (yellowish tint), which indicates compromised quality. Spills should be collected using non-sparking tools and stored as hazardous waste due to heavy metal classification in some jurisdictions.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 9001 certification for refractory metal production. Key specifications to verify include ICP-MS analysis reports for trace impurities (especially Cr, Fe, Ni <500ppm), oxygen content (<1000ppm), and particle size distribution (D90 within ±10% of target). Bulk shipments (≥100kg) typically offer 15-30% cost savings versus laboratory quantities. Consider regional logistics: Chinese producers dominate the market (80% global supply), but Western suppliers may provide better consistency for nuclear-grade applications. Request material test reports (MTRs) with batch traceability and consider third-party assay for critical applications.
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