Method for removing arsenic from high-arsenic lead anode slime

The invention provides a method for removing arsenic from high-arsenic lead anode slime. The method comprises the following steps: a, washing to remove fluorine; b, first-stage acid oxygen pressure leaching; c, second-stage acid oxygen pressure leaching; d, arsenic precipitation: alkali is added into the water washing liquid for arsenic removal treatment, arsenic-removed slag and arsenic-removed water washing liquid are obtained, and the arsenic-removed water washing liquid is returned to the step a for water washing and defluorination; and sodium sulfide is added into the first-section leachate for arsenic precipitation, and arsenic precipitation slag is obtained. According to the technical scheme, the content of As in the high-arsenic lead anode slime is reduced from 39.18% to 1.7% or below in the two-stage arsenic removal anode slime, the arsenic removal rate can reach 96% or above, and efficient removal of arsenic is achieved; particularly, in the treatment process, the generated liquid is fully recycled,