Mixer for mixing aluminum oxide solution and oxygen

The utility model relates to a mixer for mixing an aluminum oxide solution and oxygen. Mixer comprising a mixer body, wherein an aluminum oxide liquid inlet flange connected with a corresponding aluminum oxide liquid inlet pipe and an oxygen inlet flange connected with a corresponding oxygen inlet pipe are arranged on the mixer main body; the inner diameter of the oxygen inlet flange is smaller than that of the mixer main body; a discharge flange is also arranged on the mixer main body; a gas distribution plate is arranged on an oxygen introduction path in the mixer main body; the oxygen inletflange is positioned on one side of the gas distribution plate; the aluminum oxide liquid inlet flange and the discharging flange are located on the other side of the gas distribution plate, a plurality of drainage holes penetrating through the gas distribution plate in the plate thickness direction of the gas distribution plate are distributed in the gas distribution plate, and each drainage hole is provided with a coni