PAN GLOBAL REPORTS POSITIVE TIN METALLURGY RESULTS FROM LA ROMANA COPPER-TIN-SILVER DEPOSIT, SPAIN
- High tin concentrate grades of 63.2% at 58.1% recovery achieved at La Romana.
- Excellent metallurgy results de-risk the Escacena Project in southern Spain.
- Tin mineralization suitable for producing premium tin concentrates above 60% grade.
- Copper and tin concentrates offer economic enhancement for the project.
- Metallurgical test program conducted by Wardell Armstrong International and Minepro Solutions SL.
- Tin metallurgy tests show cassiterite as the optimal mineral for tin recovery.
- Particle size analysis indicates optimal tin concentration in specific size fractions.
- Flowsheet includes flotation and gravity separation steps to produce high-grade tin concentrate.
- Projected closed-circuit results show high overall concentrate grades and recovery.
- Further tests to optimize recovery and quality of tin and copper concentrates.
- None.
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- La Romana tin mineralization is amenable to producing high-quality tin concentrate by conventional gravity separation
- High tin concentrate grades of
63.2% Sn at58.1% 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
"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
The metallurgical test program was conducted by Wardell Armstrong International (
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 and0.44% 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 and58.1% 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)
Assay (%) | Overall recoveries (%) | |||||||
Open circuit | Sn | Cu | Fe | S | Sn | Cu | Fe | S |
Final Sn concentrate | 63.19 | 0.12 | 5.89 | 3.12 | 9.5 | 0.0 | 0.0 | 0.0 |
Final middlings | 1.19 | 0.07 | 18.09 | 1.24 | 49.4 | 1.4 | 11.1 | 3.8 |
Final tailings | 0.11 | 0.52 | 16.16 | 3.53 | 41.1 | 98.6 | 88.9 | 96.2 |
Closed circuit Final Sn concentrate | 63.2 | 0.10 | 5.9 | 3.1 | 58.1 | 11.2 | 18.9 | 13.0 |
Tin metallurgy program
The tin mineralization at La Romana commonly grades between
A 96kg composite was collected for the metallurgy test work, comprised of sample intervals of drill core from three drill holes within an area of the La Romana deposit where the drilling indicates more continuous higher-grade tin mineralization. Sample locations for the tin metallurgy tests are shown in Figure 1.
The steps undertaken to produce a saleable tin concentrate from the composite sample are provided in the flowsheet in Figure 2.
All the tin metallurgy tests were conducted under open-circuit conditions, where a portion of the tin is potentially lost throughout the process as middlings or tailings. However, there is potential to recover additional tin from the middlings and tailings under closed-circuit conditions. Hence, a final projected closed circuit concentrate grade and recovery was calculated based on open-circuit results, and incorporating estimates of
About the Escacena Project
The Escacena Project comprises a large, contiguous, 5,760-hectare land package controlled
About Pan Global Resources
Pan Global Resources Inc. is actively targeting copper-rich mineral deposits, given copper's compelling supply-demand fundamentals and outlook for strong long-term prices as a critical metal for global electrification and energy transition. The Company's flagship Escacena Project is located in the prolific Iberian Pyrite Belt in southern
Qualified Persons
Álvaro Merino, Vice President Exploration for Pan Global Resources and a qualified person as defined by National Instrument 43-101, has approved the scientific and technical information for this media release. Mr. Merino is not independent of the Company.
Forward-looking statements
Statements which are not purely historical are forward-looking statements, including any statements regarding beliefs, plans, expectations, or intentions regarding the future. It is important to note that actual outcomes and the Company's actual results could differ materially from those in such forward-looking statements. The Company believes that the expectations reflected in the forward-looking information included in this media release are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking information should not be unduly relied upon. Risks and uncertainties include, but are not limited to, economic, competitive, governmental, environmental, and technological factors that may affect the Company's operations, markets, products, and prices. Readers should refer to the risk disclosures outlined in the Company's Management Discussion and Analysis of its audited financial statements filed with the British Columbia Securities Commission.
The forward-looking information contained in this media release is based on information available to the Company as of the date of this media release. Except as required under applicable securities legislation, the Company does not intend, and does not assume any obligation, to update this forward-looking information.
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SOURCE Pan Global Resources Inc.
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