Patriot Achieves 6% Li₂O Spodumene Concentrate Grade in Preliminary HLS Metallurgical Testwork on the CV13 Pegmatite Indicating Potential for Joint Processing with CV5

In This Article:

Patriot Battery Metals
Patriot Battery Metals

Figure 1

Location of the CV13 Pegmatite cluster relative to the CV5 Pegmatite cluster.
Location of the CV13 Pegmatite cluster relative to the CV5 Pegmatite cluster.

Figure 2

Distribution of composite core samples collected for HLS testwork at the CV13 Pegmatite cluster.
Distribution of composite core samples collected for HLS testwork at the CV13 Pegmatite cluster.

Figure 3

Results from the inaugural drill testing at the CV13 Pegmatite cluster, completed in 2022.
Results from the inaugural drill testing at the CV13 Pegmatite cluster, completed in 2022.

VANCOUVER, British Columbia and SYDNEY, Australia, July 04, 2023 (GLOBE NEWSWIRE) --

Highlights

  • Heavy Liquid Separation (“HLS”) testwork on five (5) core sample composites from the CV13 Pegmatite cluster indicate that a simple Dense Media Separation (“DMS”) process flowsheet is applicable.

  • HLS testwork followed by magnetic separation produced 6+% Li2O spodumene concentrates at overall lithium recoveries exceeding 70%.

    • Strong recoveries at both low, moderate, and high feed grades.

  • Fe2O3 content of ~0.60% in final spodumene concentrate following magnetic separation on HLS concentrate.

  • Results provide a strong indication that material from both the CV13 Pegmatite and CV5 Pegmatite may be processed jointly using the same design criteria and flowsheet (i.e., processed at the same plant).

Mineral Process Consultant and Project Steering Group member, Brett Grosvenor, comments: “The results of this HLS testwork at CV13 are very positive and indicate strongly that joint processing with CV5 Pegmatite material is practical and viable. From a Project development, risk mitigation, and flowsheet perspective, it is difficult to ask for a better result.”

Patriot Battery Metals Inc. (the “Company” or “Patriot”) (TSX-V: PMET) (ASX: PMT) (OTCQX: PMETF) (FSE: R9GA) is pleased to announce the results of preliminary Heavy Liquid Separation (“HLS”) testwork on CV13 Pegmatite core samples. The CV13 Pegmatite cluster is located approximately 3.8 km along geological trend westwardly of the CV5 Pegmatite cluster (Figure 1), where drilling has defined a large and continuous spodumene mineralized body (see news release dated June 14, 2023).

The primary objective of the HLS test program on CV13 is to assess the liberation and recovery characteristics of spodumene at different locations along the collective ~2.2-km trend that defines the cluster. HLS testing is a cost-effective way to rapidly assess the applicability of larger scale Dense Media Separation (“DMS”) processing, which is more reflective of an operating and continuous process, and the preferred method of spodumene pegmatite processing. Further, the data will allow for an initial assessment on the potential for joint processing with CV5 Pegmatite material using the same design criteria and flowsheet (i.e., the same process plant). Prior HLS and DMS testwork completed on the CV5 Pegmatite demonstrates that a simple DMS only flowsheet is applicable (see news releases dated August 4, 2022, and December 19, 2022).

The benefits of DMS (± magnetic separation) compared to alternative recovery methods (i.e., flotation) are considerable and include relatively lower CAPEX and OPEX, reduced reagent needs, coarser product and tailings, quicker operational start-up, and overall, less technical risk. A DMS circuit also only requires a typically coarse crush size compared to a smaller crush size (or grinding), which results in reduced power consumption and less equipment.