ISA electrolytic refining method for large-size complex copper anode plate

The invention discloses an ISA electrolytic refining method for a large-size complex copper anode plate. The method comprises the steps that the copper anode plate is soaked in an electrolyte solution and hoisted into an electrolytic bath, the copper anode plate and a permanent stainless steel cathode are loaded in a spaced mode, the electrolyte solution is supplemented, cyclic solution feeding is carried out, an additive is added, and direct current is supplied for electrolytic refining; 3.00-5.00% of waste electrolyte solution of an electrolytic system is sucked to an electrolyte solution purifying system, nickel sulfate is produced, As, Sb, Bi and Ni impurities in the electrolyte solution are removed, filtered solution produced after nickel sulfate is produced is subjected to copper-removal leaching, and copper-containing leaching liquid is filtered and returned to the electrolytic bath; the residual copper anode plate is hoisted to a residual anode washing unit to be washed and retuned to an anode furnace to be smelt and cast again, the permanent stainless steel cathode is hoisted to a cathode delaminating unit to be washed and delaminated; and the electrolyte solution is subjected to sedimentation through a thickening agent and filtered through a plate-and-frame filter press and a depth purification filter and returned to the electrolytic bath, wherein the plate-and-frame filter press slag is an anode mud open circuit. According to the ISA electrolytic refining method, the operation intensity is high, the current efficiency is high, and the product quality and yield are high.