A slurry iron remover includes a tank body configured to contain slurry; a magnetic bar disposed in the tank body, where the magnetic bar is configured to absorb iron particles in the slurry; and a cleaning column ring disposed in the tank body and surrounding the magnetic bar, where the cleaning column ring is fitted to an outer surface of the magnetic bar and an inner surface of the tank body respectively, and the cleaning column ring is configured to move along an axial direction of the magnetic bar after the slurry is discharged from the tank body to clean the tank body and the magnetic bar.