Weiying antimony project breaks ground in Guangdong

antimony

China’s Weiying antimony project has started construction in Shaoguan, Guangdong. The Weiying antimony project will add 10,000 t/yr of antimony metal content across three phases through 2027. As a result, the Weiying antimony project should lift domestic feedstock demand, especially for sodium pyroantimonate producers.

Capacity, timeline, and investment

Weiying New Material will invest 350mn yuan to deliver staged capacity. The project targets full completion by end-2027. Meanwhile, phased buildout helps align procurement with market conditions and environmental permits.

Sodium pyroantimonate demand in focus

China produced 50,000–60,000t of sodium pyroantimonate in 2024. That volume consumed 25,000–30,000t of antimony metal. Therefore, this segment accounted for roughly 25–30% of China’s total antimony use of 100,000–110,000t.

Market impact and supply dynamics

New capacity will likely tighten domestic antimony concentrate balances. However, sodium pyroantimonate can draw feedstock from either concentrates or oxides. That flexibility may cushion spot volatility. Downstream uses include flame retardants, catalysts, and specialized glass. Consequently, stable feed is critical for export orders and electronics supply chains.

Pricing and procurement implications

Additional metal demand could support Chinese antimony prices. Meanwhile, phased commissioning reduces the risk of an immediate supply shock. Buyers may prefer long-term contracts to secure quality and delivery windows. Traders should also watch import flows and ore grades from Southeast Asia.

The Metalnomist Commentary

Weiying’s build enlarges China’s processing footprint while reinforcing midstream leverage in antimony chemicals. Watch feedstock sourcing and oxide conversion rates; these will decide whether concentrates or recycled oxides set marginal prices. If electronics and flame-retardant demand improve, the project could anchor a firmer domestic floor for antimony.