There are three main methods:
1. It is produced by the action of manganese dioxide and sulfuric acid.
2. Synthesis of metal manganese and sulfuric acid
3. The by-product waste liquid from hydroquinone production contains manganese sulfate and ammonium sulfate. The waste liquid is neutralized by lime milk to remove impurities, and then the manganese sulfate solution for deamination is heated, and then concentrated, crystallized, dehydrated, separated, dried, and packaged to obtain manganese sulfate Finished product.