Technology for recovering production of electrolytic copper and zinc from smelting ash

The invention discloses a technology for recovering production of electrolytic copper and zinc from smelting ash. The technology comprises a step of smelting ash leaching, a step of copper extraction and purification through copper electrodeposition, a step of iron removal through neutralization, a step of cadmium removal, and a step of zinc extraction and purification through zinc electrodeposition. The method is characterized in that chemical components in the smelting ash are analyzed, and the smelting ash is leached by a sulfuric acid solution leaching agent; the leachate obtained after the above leaching reaction undergoes a separation operation of copper extraction and purification through the copper electrodeposition; the resultant copper extraction liquor is neutralized by high-zinc dust which is a neutralizer to remove iron; cadmium is displaced and deposited by zinc powder having a mass same with cadmium after the iron removal through the neutralization; and the zinc extraction is carried out through the zinc electrodeposition by casting zinc ingot products. The technology has a wide adaptability, adopts two steps to complete the exchange reaction of zinc oxide and copper oxide in the raw material with an acid, and adopts the high-zinc dust as the neutralizer, so the massive zinc loss caused by entrainment of routine neutralizers comprising calcium oxide and sodium hydroxide is avoided. A zinc extraction liquor obtained in the above step is purified by N235, so economy and effectiveness are realized.