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This invention discloses an aqueous phase preparation tank for emulsion explosives, comprising a mixing tank and a recovery tank. The mixing tank has a lid, and a gas pipe is vertically inserted into the lid. Several identical aeration heads are installed on the gas pipe inside the mixing tank. An inlet pipe and an outlet pipe are installed at the upper and lower ends of the mixing tank, respectively. A conduit is connected to the lid, and the outlet end of the conduit is connected to the recovery tank and extends into its lower interior. A second liquid outlet pipe is vertically installed inside the recovery tank. A pressure gauge is installed on the lid. Gas valves are installed on both the connecting pipe and the conduit. This invention relates to the field of aqueous phase preparation technology. Steam with a certain pressure and temperature is introduced into the mixing tank using a pump, a gas pipe, and several aeration heads. The steam's turbulence and foaming action stirs, mixes, and heats the materials in the mixing tank, resulting in uniform mixing in all parts.