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Metallurgical Tests Yield High-Purity Manganese Sulfate Monohydrate from the Emily Manganese Deposit, Minnesota
Leach Extractions of 95% or Higher Were Achieved TORONTO, ON / ACCESSWIRE / September 24, 20...
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[{"type":"text","content":"Metallurgical Tests Yield High-Purity Manganese Sulfate Monohydrate from the Emily Manganese Deposit, MinnesotaLeach Extractions of 95% or Higher Were Achieved TORONTO, ON / ACCESSWIRE / September 24, 2024 / Electric Metals (USA) Limited (\"EML\" or the \"Company\") (TSXV:EML)(OTCQB:EMUSF) is pleased to announce the successful results of metallurgical testing on the Emily manganese deposit, located in Minnesota, United States. Kemetco Research Inc. conducted the testing program, successfully demonstrating the capability of producing high-purity manganese sulfate monohydrate (HPMSM) from manganese samples recovered from the 2023 drill program at the Emily manganese deposit. These results represent a key development milestone in the ongoing evaluation and advancement of the Emily manganese project, the highest-grade manganese deposit in North America.Highlights of Metallurgical Test WorkHigh-purity Manganese Sulfate Monohydrate (HPMSM) Production: The program confirmed the potential for producing HPMSM aimed for the lithium-ion battery market from composite samples sourced from the Emily manganese deposit.Manganese Extraction: Leaching tests using sulfuric acid (H2SO4) in combination with a reducing agent, the optimization of sulfur dioxide (SO2) ratios and finer grinding improved recovery rates, achieving manganese extraction rates exceeding 95%.Impurity Removal and Crystallization: The test work demonstrated the effective removal of impurities, including iron, potassium, and other trace elements, through multiple purification stages. Crystallization tests yielded HPMSM aimed for the battery-materials market. The HPMSM met international specification standards used by Chinese producers (Fastmarkets 2022).Potential for Optimization and Scale-Up: The results from this test work provide a strong foundation for the future development of a full-scale processing plant. The next phase will focus on flowsheet development and further process optimization to advance towards a Scoping Study / Preliminary Economic Assessment and Pre-Feasibility Study.The current metallurgical test program, along with earlier metallurgical tests conducted by Kemetco, confirmed the potential for producing a full suite of manganese products, including High-purity Manganese Sulfate Monohydrate (HPMSM), Electrolytic Manganese Metal (EMM), Electrolytic Mangan...