Method for recovering germanium in waste and old germanium-doped fibers

The invention is suitable for the waste and oil metal recovery filed, and provides a method for recovering germanium in waste and old germanium-doped fibers. The method comprises a step of ball milling, a step of reduction roasting, a step of germanium leaching with an acid, and a step of germanium recovery. The method for recovering germanium in the waste and old germanium-doped fibers allows iron powder to be added in the reduction roasting step, so the germanium recovery rate is substantially improved; and simultaneously the method for recovering germanium in the waste and old germanium-doped fibers has the advantages of simple operation, low cost, high production benefit, and no generation of substances polluting the environment, and is very suitable for the industrialized production.