Efficient self-discharging type deslagging method

A self-discharging type slag discharging method is characterized in that a device used in the method comprises a slag discharging hopper and the like and comprises the following steps that firstly, a crane is prepared beside a vertical shaft, a main hook of the crane buckles a hoisting shaft of a hoisting connecting plate, an auxiliary hook buckles a steel wire rope, the steel wire rope is connected into a lock catch, and the lock catch penetrates into a lock catch connecting plate; then, a main hook and an auxiliary hook of the crane are controlled to descend, the slag discharging hopper is lifted into the vertical shaft, in the process, the main hook of the crane bears the load of the slag discharging hopper, and the auxiliary hook moves along with the main hook and does not bear the load of the slag discharging hopper; then, the bottom of the vertical shaft is excavated through a backhoe excavator, excavated slag is loaded into a slag discharging hopper, a main hook and an auxiliary hook of the crane are c