Method for recycling palladium from silver electrolyte purification slag

The invention discloses a method for recycling palladium from silver electrolyte purification slag. The method comprises the following steps that silver electrolyte is subjected to caustic soda flakeneutralization, and the silver purification slag containing silver, palladium and other precious metal is obtained; the obtained purification slag is leached through nitric acid, and a solution containing silver and palladium is obtained; a palladium precipitation agent is added into the obtained leaching solution containing silver and palladium for palladium precipitation, and palladium-rich slagis obtained; the palladium-rich slag is subjected to weak acid pickling twice and water washing once and then roasted, and palladium oxide slag is obtained; the obtained palladium oxide slag is subjected to acid pickling through nitric acid; and the obtained acid pickling solution is reduced through a reducing agent, and sponge palladium is obtained. The recycling method is adopted for recyclingpalladium, the palladium re