METHOD FOR RECOVERING VALUABLE COMPONENTS FROM MIXED SLAG CONTAINING COPPER AND IRON

摘要

Provided is a method for recovering valuable components from mixed slag containing copper and iron, which comprises S1, mixing slag; adding copper slag into a smelting reaction device, and simultaneously adding one or more of lead smelting slag, blast furnace slag, steel slag and ferroalloy slag to form mixed slag; heating the molten slag to a molten state to form reaction molten slag, mixing evenly, meeting the requirements that the temperature of the molten slag is 1050-1450℃ and the alkalinity CaO/SiO₂ ratio of the molten slag is equal to 0.15-1.5, to obtain the reacted molten slag; S2, separating and recycling. The recovery of copper, iron, zinc, lead, gold and silver in non-ferrous metallurgical slag and iron and steel metallurgical slag is realized, and the problems of large accumulation of slag and environmental pollution at present are solved.