Abstract:Germanium-bearing zinc oxide dust was treated by atmospheric oxygen enrichment leaching and neutralization. Leaching rate of Ge and Zn in dust was improved by controlled acidity and atmospheric oxygen enrichment leaching, and controlling concentration and valence of iron in solution. Through small-scale, expanded and industrial experiments, the results show that under the conditions of atmospheric oxygen acid leaching including leaching temperature of 90 ℃, L/S of 7 mL/g, and leaching time of 4 h, and neutralization conditions including pH value of solution of 3.0~3.5 and reaction time for 1.5 h under 90 ℃, leaching rate of Ge and Zn in dust is 90% above and 80% above, respectively, and Fe3+concentration in solution is 0.02 g/L below, which is beneficial to efficient separation and recovery of Ge in subsequent solution.