PAN GLOBAL REPORTS POSITIVE TIN METALLURGY RESULTS FROM LA ROMANA COPPER-TIN-SILVER DEPOSIT, SPAIN

TSXV: PGZ   |   OTCQX: PGZFF   |   FSE: 2EU 

• La Romana tin mineralization is amenable to producing high-quality tin concentrate by conventional gravity separation
• High tin concentrate grades of 63.2% Sn at 58.1% recovery
• High-quality copper and tin concentrates offer potential to meaningfully enhance the project economics
• The excellent metallurgy results are an important de-risking milestone for advancing La Romana towards economic assessment

VANCOUVER, BC, April 3, 2024 /PRNewswire/ -- Pan Global Resources Inc. ("Pan Global" or the "Company") (TSXV: PGZ) (OTCQX: PGZFF) (FSE: 2EU) is pleased to announce positive metallurgical test results for tin recovery at the La Romana copper-tin-silver discovery in the Escacena Project, southern Spain. Results indicate a premium high-grade tin concentrate is achievable using a conventional gravity separation flowsheet. The tin metallurgy results complement the recently reported copper metallurgy test results that showed saleable, high quality clean copper concentrates can be achieved by conventional froth flotation (see March 21, 2024 media release).

"Results from the La Romana tin metallurgy program have exceeded expectations, confirming that the tin mineralization is well suited to conventional gravity separation to produce premium tin concentrates with grades above 60%. For context, modern tin mines typically produce concentrates grading 50-55% tin. Tin is a rare bi-product in the Iberian Pyrite Belt and we believe that the tin at La Romana has the potential to meaningfully enhance overall project economics. The outstanding copper and tin metallurgy test results are an important de-risking milestone for the Escacena Project," said Tim Moody, Pan Global's President & CEO.

The metallurgical test program was conducted by Wardell Armstrong International (United Kingdom), under the coordination and management of Minepro Solutions SL (Spain). Results are summarized in table 1 below.

Test result highlights

• The tin metallurgy program demonstrates the La Romana Cu-Sn-Ag mineralization is amenable to recovery of saleable tin concentrates.
• Comminution tests to determine the net energy requirements to grind the tin sample to the product size returned a Bond Ball Mill Work index (BBMWi) value of 13.1 kWh/t, classified as medium hardness. The results are typical/within the range expected for Iberian Pyrite Belt ores.
• The head grade assays for the tests were 0.27% Sn and 0.44% Cu.
• Mineralogical analyses confirm the tin mineralization is almost 100% cassiterite, which is the optimal mineral for recovery of tin.
• Particle size analysis to determine grind size indicates the cassiterite is most concentrated in the -106 to +53 micron, and -53 to +10 microns size fractions. Cassiterite liberation characteristics were also best in the finer fractions.
• The tin concentration flowsheet included initial flotation tests to remove sulfides and copper, followed by gravity separation of tin (cassiterite) from the flotation tailings, and a final flotation stage to recover tin not captured by the previous steps.
• The initial sulfide flotation was confirmed as effective for segregating copper and tin minerals, with most of the copper going to a rougher concentrate and the tin going to the tailings.
• Tailings from the initial flotation were de-slimed and screened to improve the response before undergoing a series of open circuit rougher and cleaner gravity separation steps, using a shaker table to concentrate the tin:
  • Rougher stage gravity confirmed superior tin grades and recoveries for the -106 to +53 microns and -53 to +10 microns, size fractions, and from regrinding of the coarser fractions.
  • The cleaner tests achieved saleable tin concentrate grades at this early stage.
  • Flotation on residual tailings and finer fraction recovered minor additional tin.
• The projected closed-circuit results include high overall concentrate grades of 63.2% tin and 58.1% tin recovery, excellent for this style of mineralization.
• Additional tests will aim to further verify the results and target further optimization to improve recovery and quality of the tin and copper concentrates, along with design and costing studies.

Table 1 – Tin Metallurgical Test Results Summary (MINEPRO, 2024)