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Highlights
Trigg Minerals engages Metso to design a scalable antimony processing solution using Ausmelt TSL
Study targets environmentally responsible smelter flowsheet for Antimony Canyon Project
Collaboration supports plans to build a Western antimony supply chain with reduced emissions
Trigg Minerals (ASX:TMG), a critical minerals developer listed on the ASX 300, has partnered with global technology provider Metso (HEL:METSO) to assess downstream processing solutions for its Antimony Canyon Project in Utah, United States. The collaboration seeks to establish a scalable and environmentally efficient approach to smelting antimony sulphide concentrates, aligning with Trigg’s objective to support Western supply chains for strategic metals.
Ausmelt TSL Technology to Anchor Conceptual Smelting Study
The partnership involves Metso conducting a conceptual study focused on deploying Ausmelt Top Submerged Lance (TSL) smelting technology. Known for its lower greenhouse emissions and advanced off-gas capture capabilities, the Ausmelt platform represents a cleaner alternative to conventional antimony processing methods.
The study will assess a smelter flowsheet design with production specifications for high-purity antimony ingot. Trigg aims to produce material that aligns with global industrial standards for refined antimony metal, using pyrometallurgical treatment techniques.
Three-Stage Processing Strategy Outlined
Metso’s study outlines a three-phase processing strategy. The initial phase targets the primary smelting of antimony sulphide concentrate to produce high-grade antimony oxide fume. The intermediate stage involves converting this oxide fume into crude antimony, followed by a refining stage to elevate purity levels to the target specification.
This process is designed to support domestic antimony supply at a time when the United States remains entirely import-reliant, highlighting the strategic significance of the Antimony Canyon Project.
Strategic Positioning in the US Critical Minerals Sector
The Antimony Canyon Project consists of nearly fifty unpatented lode mining claims and strengthens Trigg’s participation in the US critical minerals landscape. Trigg’s push toward an independent supply chain comes amid growing demand for antimony in defense, electronics, and renewable sectors, combined with supply concentration in a small number of overseas jurisdictions.
Company leadership sees the collaboration with Metso as a foundational step toward establishing a clean and secure domestic smelting capability within a tier-one jurisdiction.
Focus on Low-Emission, Commercially Proven Smelting Platforms
Trigg’s Managing Director Andre Booyzen emphasised the importance of proven technology in executing the company’s downstream strategy. The Ausmelt platform’s mature global footprint and environmentally favourable profile align with Trigg’s commitment to responsible resource development.
As Trigg progresses its technical studies and broader project planning, the smelter design work with Metso forms a core component of its downstream processing pathway for antimony production in North America.
