Description:
<jats:title>Abstract</jats:title><jats:p>Different grades of natural manganese ores were used to remove SO<jats:sub>2</jats:sub> by dry flue gas desulfurization. The grades of the manganese ores were negatively correlated with the desulfurization performance. The produced MnSO<jats:sub>4</jats:sub> enriched on the surface would block the gas diffusion channels during desulfurization. The better desulfurization properties of the low‐grade manganese ores are ascribed to the highly active <jats:italic>γ</jats:italic>‐MnO<jats:sub>2</jats:sub>, the porous structure, and the high specific surface area as well as the SiO<jats:sub>2</jats:sub> bridge‐like effects. This study supports the cooperative use of sulfur‐containing flue gases and low‐grade natural manganese oxides.</jats:p>