How does sulfuric acid help produce a manganous sulfate solution?

In the context of manganese processing, sulfuric acid is used as a solvent to dissolve manganese oxide (MnO) calcine, which is produced by roasting manganese ores. This chemical reaction facilitates the formation of a manganous sulfate solution.1

Once this solution is created, it undergoes a purification process—typically involving the addition of ammonia to precipitate impurities such as iron and aluminum, and hydrogen sulfide to remove other metals like arsenic, copper, and zinc—before being used in further applications, such as the production of electrolytic manganese or synthetic manganese dioxide.12