Device for increasing oxygen utilization rate in zinc hydrometallurgy iron removal process

The utility model relates to the technical field of zinc hydrometallurgy, in particular to a device for increasing the oxygen utilization rate in a zinc hydrometallurgy iron removal process. A device for increasing the oxygen utilization rate in the zinc hydrometallurgy iron removal process comprises a stirring shaft device, the stirring shaft device comprises a stirring shaft and stirring blades arranged on the stirring shaft, the stirring shaft is a hollow round pipe, an oxygen pipeline cavity is formed in the stirring blades and communicated with the hollow round pipe, air outlet holes are formed in the stirring blades, and the stirring blades are communicated with the stirring shaft. A connecting part is arranged at the upper end of the stirring shaft, the connecting part is rotatably connected with the upper end of the stirring shaft, and the connecting part is communicated with an oxygen input pipeline. According to the technical scheme adopted by the utility model, oxygen is introduced into the stirrin