Polyferric sulfate reaction kettle capable of preventing corrosion

A corrosion-resistant polyferric sulfate reaction kettle relates to the technical field of polyferric sulfate production and comprises a kettle body, the top of the kettle body is detachably connected with a cover body, the middle of the cover body is rotatably connected with a stirring rod, the side wall of the stirring rod is fixedly connected with a plurality of stirring blades, and the stirring blades are detachably connected with protective sleeves. According to the utility model, the protective sleeve is arranged outside the stirring blade, so that during stirring, solid ferrous sulfate crystals can be prevented from directly colliding with the stirring blade, the possibility that the stirring blade is abraded and corroded is reduced, and the protective sleeve can be separated from the stirring blade, so that the stirring blade is prevented from being damaged. When a certain protective sleeve is seriously damaged, the protective sleeve can be independently removed and replaced, so that the cost is saved