Method for comprehensively recovering lithium, fluorine and aluminum from electrolytic aluminum overhaul slag

The invention discloses a method for comprehensively recovering lithium, fluorine and aluminum from electrolytic aluminum overhaul slag, and belongs to the technical field of comprehensive utilization of mineral resources. The method comprises the following steps: firstly, uniformly mixing overhaul slag powder obtained by grinding overhaul slag with water to obtain overhaul slag ore pulp; sodium hypochlorite and sodium hydroxide are added into the overhaul slag ore pulp at the same time, and transformation overhaul slag and a transformation solution are obtained; mixing transformation overhaul slag ore pulp obtained by mixing the transformation overhaul slag and water with sulfuric acid, filtering and washing to obtain a leaching solution and a filter cake; adding water into a filter cake for filtering and washing; adding hydrogen peroxide into the leaching solution to obtain an oxidized leaching solution, and uniformly mixing the oxidized leaching solution with the transformation solution to obtain iron slag