REACTIVE MAGNESIA FROM MAGNESIUM SULFATE HYDRATE: A CIRCULAR ROUTE FOR ACID NEUTRALIZATION SYSTEMS

Autores

  • Antonio Clareti Pereira Universidade Federal de Minas Gerais - UFMG

DOI:

https://doi.org/10.61164/pma8x695

Palavras-chave:

Reactive magnesium oxide (MgO). , Carbothermic reduction, Hydrated magnesium sulfate, Sulfuric acid regeneration, Circular hydrometallurgy

Resumo

This work presents an efficient carbothermic route for producing highly reactive magnesium oxide (MgO) from hydrated magnesium sulfate (MgSO₄·H₂O), using charcoal, petroleum coke, and bituminous coal as reducing agents. Experiments conducted in a muffle furnace at 850 °C for 120 minutes yielded MgO in the range of 94.3% to 95.0%. Acid-neutralization tests demonstrated rapid reactivity (44–98 s), and the product exhibited a porous microstructure with particle sizes below 40 µm and low ash content. The process minimizes gypsum waste, enables MgSO₄ recycling, and allows SO₂ capture for sulfuric acid regeneration, offering both environmental and logistical advantages—particularly for sustainable sulfuric-acid-based hydrometallurgical operations in remote regions

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Referências

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Publicado

2025-10-30

Como Citar

REACTIVE MAGNESIA FROM MAGNESIUM SULFATE HYDRATE: A CIRCULAR ROUTE FOR ACID NEUTRALIZATION SYSTEMS. (2025). Revista Multidisciplinar Do Nordeste Mineiro, 19(03), 1-21. https://doi.org/10.61164/pma8x695