EV Resources Commissions Flotation Circuit Ahead of Antimony Concentrate Production
EV Resources has successfully commissioned the flotation circuit at its Tecomatlán plant, setting the stage for processing bulk ore and producing its first marketable antimony concentrate as it advances toward commercial production.
- Flotation circuit commissioned and dry tested
- 200-tonne bulk sample processing next
- 81.1% antimony recovery confirmed in prior tests
- Low-capex strategy underpinning near-term production
- Operational proof of concept to de-risk project
Flotation Circuit Commissioned at Tecomatlán Processing Plant
EV Resources (ASX:EVR) has hit a significant milestone by commissioning and dry testing the flotation circuit at its Tecomatlán Processing Plant in Puebla, Mexico. This circuit is the final stage in EVR’s processing flowsheet and is critical for producing a marketable antimony concentrate from ore sourced primarily from the Los Lirios and Chinantla projects. The successful commissioning confirms the flotation cells are operating as designed and ready for the next phase of testing.
Next Step: Processing Bulk Ore Sample
The company will soon process a 200-tonne bulk sample from the Chinantla Antimony Project through the crushing, grinding, and flotation circuits. This operational Proof of Concept campaign is designed to validate the plant’s performance under real operating conditions, optimize parameters, and produce EVR’s first saleable antimony concentrate. The results will provide essential engineering, metallurgical, and operational data to support the transition to full commercial production.
Building on Strong Metallurgical Foundations
This progress follows metallurgical test work announced in June 2026, which demonstrated an antimony recovery rate of approximately 81.1% using flotation methods. Those tests also produced a commercial-grade concentrate, confirming flotation as the preferred processing route. Leveraging existing infrastructure at Tecomatlán, EVR aims to maintain a low-capex pathway to near-term production, a strategy that could accelerate cash flow and reduce development risk.
Strategic Importance of Antimony Production
Antimony is a critical mineral with growing demand, particularly in Western supply chains. EVR’s staged development approach, centred on refurbishing and commissioning the Tecomatlán plant, positions the company to become a near-term producer. The Los Lirios project, located about 50km from Tecomatlán, remains EVR’s flagship asset, with ongoing exploration targeting a maiden JORC Mineral Resource. Meanwhile, the company’s US projects in Nevada aim to tap into domestic antimony supply amid strategic initiatives.
Executive Commentary and Outlook
Executive Chairman Shane Menere highlighted the milestone as a key step in EVR’s staged pathway towards production. He emphasised the importance of progressively proving each major processing stage before full plant integration. The upcoming bulk sample campaign is expected to demonstrate operational capability and generate data critical for refining plant efficiencies and supporting future development stages.
Bottom Line?
The commissioning of EVR’s flotation circuit marks tangible progress, but the success of the upcoming bulk sample processing will be pivotal in validating the plant’s commercial viability.
Questions in the middle?
- Will the bulk sample campaign confirm consistent antimony recovery and concentrate quality at scale?
- How quickly can EVR integrate full plant operations following the proof of concept phase?
- What progress will EVR make on offtake agreements once the first marketable concentrate is produced?
