Resourceful treatment method for electrolytic aluminum overhaul slag

The invention relates to the technical field of electrolytic aluminum hazardous waste utilization, and provides an electrolytic aluminum overhaul slag resourceful treatment method which comprises the following steps: (1) crushing waste cathodes and other linings in electrolytic aluminum overhaul slag to obtain waste cathode crushed aggregates and other lining crushed aggregates; (2) the crushed materials are fed into a raw material mill to be milled, and waste cathode powder and other lining powder are obtained; (3) mixing the powder with the raw slurry according to 1-3% of the mass of the raw slurry, and blending; (4) feeding the obtained ingredients into a clinker kiln for high-temperature roasting to obtain clinker; (5) cooling the clinker, and then grinding and dissolving out the clinker in a dissolving-out mill by using a dilute alkali solution to obtain a dissolving-out solution and undissolved solid-phase red mud; (6) feeding the dissolution liquid into a leaching liquid of a Bayer process dissolution