The utility model discloses a casein production dry process sterilization apparatus, including the blending bunker support, the blending bunker has been hung on the blending bunker support, open on the top of blending bunker has material import and export, the interface is carried to the last material that has connect of material import and export, the material import and export passing through gases loop pipe put through with vacuum transfer units mutually, the material carries interface connection to have charge -in pipeline, install roots's fan among the charge -in pipeline, carry to the blending bunker in through the material of roots's fan in with vacuum transfer units, one side of blending bunker is equipped with blending bunker ozone and lets in the interface, blending bunker ozone lets in the interface to be passed through the ozone pipeline and puts through mutually with ozone generator. The utility model relates to a device moves under dry environment, and equipment is simple, can reduce the equipment investment, reduce the equipment energy consumption, stabilize product quality, carry the high automation control level, saves water and electricity and manpower resources.