Global vanadium mine production fell to an estimated 110,000 tonnes of contained vanadium in 2025 from 118,000 tonnes in 2024, according to USGS Mineral Commodity Summaries 2026 data, tightening the supply base just as flow batteries begin to register as a distinct demand segment.

A highly concentrated supply map

China dominates output at an estimated 82,000 t in 2025, down from 84,000 t in 2024. Russia held flat at an estimated 21,000 t. South Africa fell sharply to an estimated 5,000 t from 8,050 t, while Brazil edged up to an estimated 5,300 t from 5,190 t. The United States and Australia withheld production figures.

Reserve holdings are similarly concentrated, with Australia, China and Russia accounting for the bulk of declared tonnage. Vanadium is designated a US Critical Mineral for 2025, and the market is generally counted as seven producing countries and thirteen major producers — a narrow base for a material increasingly tied to grid infrastructure.

Where the tonnes go

The 2024 end-use breakdown compiled from Vanitec and USGS data places 85% of vanadium in steel, mainly high-strength low-alloy (HSLA) rebar; 6% in chemicals and catalysts; 5% in titanium alloys; 2% in vanadium redox flow batteries; and 2% in other uses.

A second, USGS-based breakdown on the same source puts steel alloying at roughly 90%, titanium alloys at about 4%, chemicals and catalysts at about 3%, and VRFBs at about 3% and growing. Both readings agree on the direction: flow batteries are described as a "niche but growing" grid-storage application and an "emerging long-duration storage application."

The intermediate that matters for electrolyte

Most vanadium reaches the market as a steel-slag co-product. Smelting vanadiferous titanomagnetite leaves vanadium in slag at roughly 12–25% V2O5, which is the main traded intermediate. Salt roasting with Na2CO3 or NaCl at 800–850 °C, followed by water leaching, ammonium metavanadate precipitation and calcination, yields V2O5 of 98% minimum grade — the specification used both for ferrovanadium and for VRFB electrolyte.

"Vanadium flow batteries can provide extended discharge periods, allow electrolyte reuse through repeated charging cycles, and permit storage capacity to be increased independently of power output."

Recycling remains a thin second source

The end-of-life recycling rate sits in the 10–25% band used by UNEP's International Resource Panel, with recovery largely incidental to steel scrap and spent catalysts — V2O5 catalysts from sulphuric acid plants and nickel-vanadium-molybdenum spent oil-refining catalysts. China consumes roughly half of world vanadium, with seismic-code HSLA rebar (GB1499.2) the single largest application.

For VRFB developers, the implication is structural: electrolyte supply depends on a by-product chain optimised for steel, not for battery-grade chemistry.

This article was assisted by AI analysis. Please refer to the original source for official information.