The oxidation of FeS 2 and reduction of MnO 2 are essencial for the preparation of manganese sulfate through the process of co calcining pyrolusite and pyrite.

• 软锰矿和黄铁矿共同焙烧制取硫酸锰实质上是完成FeS2 的氧化和MnO2 的还原两大主要反应。