Automatic slagging-off method for electric furnace hearth

The invention discloses an automatic slagging-off method for an electric furnace hearth, and relates to the technical field of zinc hydrometallurgy equipment cleaning. The automatic slagging-off method comprises the following steps that firstly, an industrial robot is selected and placed, and the industrial robot and a slagging-off rake are installed; 2, setting an automatic slagging-off action program, a left slagging-off program and a right slagging-off program of the industrial robot; thirdly, small-range slagging-off work is carried out; fourthly, large-range slagging-off work is conducted; fifthly, the slagging-off operation in the third step and the fourth step is repeated; 6, observing the condition of a slag layer in the inner cavity of the electric furnace, and performing a left-side or right-side slagging-off procedure; seventhly, the slag receiving hopper is conveyed out; according to the size of an inner cavity of the electric furnace, the matched industrial robots are selected, the industrial rob