Agrimin provides process engineering update for Mackay Potash Project

Agrimin Limited (ASX: $AMN) has released an update on the ongoing process test work for the Mackay Potash Project. The company has made significant progress in process design and process control during pond commissioning, with the identification of a unique mineralogy anomaly in startup feed salts in Western Australian SOP projects. The test work has resulted in the determination of optimal temperature to manage startup feed salt composition and the adoption of a cooling crystalliser for temperature-controlled feed salt conversion. Further flotation test work is being undertaken to derisk the process flowsheet.

Executive commentary on process engineering update

Graeme Ditri, Process Manager at Agrimin, stated, 'Discovering the occurrence of Leonite in the Mackay feed salts has had a profound impact on our understanding of the required process flowsheet. By understanding industry learnings and working in collaboration with Veolia Water Technologies, the test plan we created has tested a range of scenarios and sensitivities to narrow down the key design parameters required in conversion, the first stage of the process. Using a cooling crystalliser for conversion enables tight and uniform temperature control which results in the required conversion ahead of flotation, the second stage of the process. We look forward to our continued partnership with Veolia Water Technologies and commencing the flotation test work with FLSmidth.'

Summary of process engineering update and outlook

Agrimin's process engineering update for the Mackay Potash Project has revealed significant advancements in understanding and resolving the unique mineralogy anomaly in Western Australian SOP projects. The company has successfully identified the conditions required to convert Leonite to Schoenite, ensuring the conversion occurs before flotation. The use of a cooling crystalliser for conversion has been incorporated into the design, providing uniform temperature control for the required conversion. The upcoming flotation test work with FLSmidth aims to demonstrate acceptable recovery rates in the flotation stage of the flowsheet. Agrimin's diligent approach and collaboration with industry partners validate its commitment to delivering the Mackay Potash Project. The company's focus on finalizing the process design and progressing equipment selection reflects its dedication to sustainable food security and meeting the increasing global food demand.