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Giyani Produces High Purity Manganese Sulphate Monohydrate from Demo Plant

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Giyani Produces High Purity Manganese Sulphate Monohydrate from Demo Plant

 

 

 

 

 

Giyani Metals Corp. (TSX-V: EMM) (GR: A2DUU8) developer of the K.Hill Battery-Grade Manganese Project in Botswana, is pleased to announce that it has successfully produced High Purity Manganese Sulphate Monohydrate from its Demonstration Plant in Johannesburg, South Africa in September 2025.

 

Highlights:

  • Successful production of HPMSM from the Demo Plant in Johannesburg, South Africa, marking a significant milestone for the Company.
  • HPMSM off-taker qualification trials will now commence.
  • Following the successful production of High Purity Manganese Oxide in Q1 2025, Giyani has now proven its dual product offering capability which positions the Company to supply its products to a broad range of potential future battery technologies and keep pace with the rapidly evolving battery market.
  • Giyani’s Demo Plant has provided invaluable information and has derisked the final optimized process flowsheet which will now be carried forward into the design and operation of the full-scale commercial plant in Botswana.

 

Outlook:

 

The Company’s focus over the next six months will now be:

  • To complete the Definitive Feasibility Study to NI 43-101 standards. This remains on track for completion by end Q1 2026.
  • Ongoing qualification of Giyani’s HPMSM and HPMO product.

 

Nigel Robinson, Interim Executive Chair of the Company, commented:

 

“Achieving first production of HPMSM in Q3 2025 represents a significant milestone for the Company. The Demo Plant has been invaluable in informing the new optimized process flowsheet, developed by Giyani, over the past several months. 

 

We will now incorporate the learning points and process changes into the DFS which remains on track for completion in Q1 2026. This significant milestone will also allow us to commence the off-taker testing phase for HPMSM with HPMO qualification already well underway. 

 

“With the successful production of both HPMSM and HPMO, we have demonstrated our dual product offering capability, placing us in a strong position to supply the dynamic and evolving chemical requirements of the battery and energy storage market. I would like to take this opportunity to thank all the team for their dedication and hard work in achieving this milestone.

 

Production of HPMSM from Demo Plant

 

The Company has successfully produced HPMSM from its Demo Plant in South Africa. First product will now be shipped to potential off-takers for initial qualification. The Demo Plant has been an invaluable asset in developing Giyani’s new innovative process flowsheet. The Demo Plant assisted in the risk identification and mitigation of process risks and has unquestionably enhanced the commercial viability of the K.Hill Project. The Demo Plant has provided the Company with significant information which will be carried forward to the design and operation of the full-scale commercial plant in Botswana.

 

Below is a selection of images from the Demo Plant.

 

Manganese Market

 

The demand for manganese is set to rise significantly, driven by advancements in battery technologies that increasingly favour higher manganese content owing to its stabilizing properties. From 2028 onwards, new battery chemistries being developed will require greater quantities of battery-grade manganese as critical inputs. This shift in demand is largely attributed to the growing adoption of electric vehicles and energy storage solutions, both of which rely on next-generation batteries with enhanced performance and safety profiles. Giyani is uniquely positioned to capitalize on this market evolution. The Company benefits from assets located in a supportive jurisdiction, enabling it to align its project timelines with the anticipated surge in demand for battery-grade manganese.

 

About Giyani

 

Giyani is focused on becoming the preferred western-world producer of sustainable, low-carbon high-purity battery-grade manganese for the EV and ESS industry. The Company has developed a bespoke hydrometallurgical process to produce battery-grade manganese products, for cathode precursor materials, critical for EVs and ESS.

 

Additional information and corporate documents may be found on www.sedarplus.ca and on Giyani Metals Corp. website at https://giyanimetals.com/.

 

Jeffrey Stevens, Pr. Eng MSAIMM BSc Eng (Chem), who is registered with the Engineering Council of South Africa and is a Qualified Person as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”), has reviewed and approved the scientific and technical information disclosed in this news release. He is considered independent under NI 43-101.

 

 


Figure 1. Crystallizers at the Demo Plant (CNW Group/Giyani Metals Corp.)

 

 

Figure 2. Close up of Crystallizers (CNW Group/Giyani Metals Corp.)

 

 

 


Figure 3. Overview of the Demo Plant (CNW Group/Giyani Metals Corp.)

 

 

 


Figure 4. HPMSM filter cake (CNW Group/Giyani Metals Corp.)

 

Posted October 6, 2025

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