A technological process on ultrasonic strengthening oxalic acid leaching zinc dross is studied in this paper. The effects of radiation intensity and time of ultrasonic wave, and the ratio of liquid to solid on the rate of zinc dross extraction are also analyzed and discussed to reveal the law of the leaching rates of zinc dross under ultrasonic radiation. Experiment manifests that the leaching rates of zinc dross are elaborately enhanced and the leaching time of zinc oxide finished ore is shortened by means...