{"id":8676,"date":"2026-09-07T06:15:00","date_gmt":"2026-09-07T06:15:00","guid":{"rendered":"https:\/\/investors.eurobatteryminerals.com\/press-releases\/63-wo3-san-juan-tungsten-confirms-commercial-grade-concentrates\/"},"modified":"2026-09-07T08:16:54","modified_gmt":"2026-09-07T06:16:54","slug":"63-wo3-san-juan-tungsten-confirms-commercial-grade-concentrates","status":"publish","type":"post","link":"https:\/\/investors.eurobatteryminerals.com\/en\/press-releases\/63-wo3-san-juan-tungsten-confirms-commercial-grade-concentrates\/","title":{"rendered":"63% WO3: San Juan tungsten confirms commercial-grade concentrates"},"content":{"rendered":"\n
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Stockholm, 7 September 2026 \u2013 The mining company Eurobattery Minerals AB (Nordic Growth Market: \u201c<\/strong>BAT<\/a><\/strong>\u201d and B\u00f6rse Stuttgart: \u201c<\/strong>EBM<\/a><\/strong>\u201d; hereinafter \u201cEurobattery Minerals\u201d or the \u201cCompany\u201d) announces the results of the metallurgical process design testwork programme carried out by SLR Consulting Limited at its laboratory in Truro (United Kingdom) on a bulk sample from the San Juan project in A Gudi\u00f1a, Ourense.<\/strong><\/p>\n<\/div>\n\n\n\n

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The programme, carried out between April and July 2026 in consultation with Minepro Solutions, aimed to determine the concentrate grade and tungsten recovery achievable through conventional gravity concentration.<\/p>\n

The tests conducted by SLR Consulting were performed exclusively using a gravity-based circuit. No flotation, no chemical separation reagents and with conventional off-the-shelf equipment.<\/p>\n

Main results<\/strong><\/p>\n\n\n\n\n\n\n\n
63.1% WO3<\/strong><\/td>\nConcentrate grade obtained in the cleaning stage<\/td>\n<\/tr>\n
No flotation<\/strong><\/td>\nExclusively gravity-based circuit. No chemical separation reagents and no leaching.<\/td>\n<\/tr>\n
6.67 kWh\/t<\/strong><\/td>\nBond crushing index, classified as \u201cvery easy\u201d. An abrasion index of 0.12 classifies the ore as \u201cslightly abrasive\u201d.<\/td>\n<\/tr>\n
92%<\/strong><\/td>\nProportion of free or liberated scheelite in the sample. Only 4% appears encapsulated.<\/td>\n<\/tr>\n
0.07 m\u00b2\/t\/day<\/strong><\/td>\nThickener unit area, compatible with conventional thickening technology.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The tested circuit, comprising hydrocyclone desliming, spiral concentration, a scavenging stage and a cleaning stage, recovered 49.9% of the tungsten contained in the feed into a concentrate mass equivalent to 0.7% of the original feed. All equipment used is conventional and commercially available: hydrocyclone, spirals, shaking tables and thickener.<\/p>\n

Pedro E. Jim\u00e9nez de Francisco, Project Director of Tungsten San Juan S.L., comments:
\u201cThe work programme carried out by SLR has enabled us to thoroughly characterise the behaviour of the ore through an extensive programme of metallurgical tests and mineralogical studies specifically designed to support the engineering and project definition phases.<\/em><\/p>\n

The results obtained by SLR have been highly satisfactory and not only confirm the significant potential of the deposit but also provide a rigorous technical basis for the design of the future processing plant, allowing key process parameters to be validated and the planned configuration for the different stages of ore treatment to be optimised. This information represents an essential step in reducing technical risks and defining an efficient and competitive processing strategy.\u201d<\/em><\/p>\n

Market benchmark*<\/strong>
For comparison purposes, the metallurgical parameters published by operating tungsten mines and by projects with an available feasibility or prefeasibility study are presented below. All assets with publicly available data are included, without selection.<\/p>\n\n\n\n\n\n\n
Asset type<\/strong><\/td>\nFeed grade<\/strong><\/td>\nRecovery<\/strong><\/td>\nkg WO3\/t<\/strong><\/td>\n<\/tr>\n
Operating mines (Europe and Australia)<\/td>\n0.13% \u2013 0.24%<\/td>\n60%<\/td>\n0.86 \u2013 1.37<\/td>\n<\/tr>\n
Projects with feasibility or prefeasibility<\/td>\n0.10% \u2013 0.45%<\/td>\n55% \u2013 81%<\/td>\n0.74 \u2013 3.65<\/td>\n<\/tr>\n
Tungsten San Juan (laboratory testwork**)<\/strong><\/td>\n0.73%<\/strong><\/td>\n49.9 \u2013 XX%<\/strong><\/td>\n3.64<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Grades expressed in WO3. The last column is the product of grade and recovery, i.e. the tungsten recovered per tonne of ore treated. The figures for operating mines are taken from quarterly reports; those for projects are taken from published feasibility and prefeasibility studies. <\/p>\n

Roberto Garc\u00eda Mart\u00ednez, CEO of Eurobattery Minerals AB, comments:
\u201cThese results confirm what we have stated about the San Juan project: it is a deposit that can be concentrated by gravity, using standard equipment and without separation chemistry. This means a plant that is simpler to build, less expensive to operate and has a significantly lower environmental footprint than a project requiring flotation.<\/em>
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It is the best possible starting point for detailed engineering and the next phase of the project.\u201d<\/em><\/p>\n

Next steps<\/strong>
The next steps for the project will be to advance the detailed engineering, plant construction and commissioning in 2027.<\/p>\n

About Tungsten San Juan<\/strong>
Tungsten San Juan S.L. is the owner of the San Juan tungsten project, located in the municipality of A Gudi\u00f1a, in the province of Ourense, Galicia, north-western Spain. More information about the project at: https:\/\/tungsten-sanjuan.com\/en\/inicio-english\/<\/a> <\/p>\n

*Sources for the market benchmark:<\/strong><\/em><\/p>\n