Method for extracting and recovering iron oxide red from high-quality slag hydrochloric acid leaching solution

The invention provides a method for extracting and recovering iron red from a hydrochloric acid leaching solution of superior molten slag, and relates to the technical field of hydrometallurgy. The method adopts a multistage countercurrent centrifugal extraction technology to separate the iron element, does not need to repeatedly reduce iron oxide ions, does not need to repeatedly adjust the pH value of the solution, and is short in reaction time, low in reagent consumption, high in treatment efficiency and beneficial to industrial application. According to the method, the iron oxide red is recovered by adopting an extraction-precipitation-roasting technology, reagents are conventional in composition, few in variety and low in consumption, the extraction agent can be recycled, the product has few impurities, and the production cost is low. The method provided by the invention has the advantages of simple and continuous production process, high treatment efficiency, low reagent consumption, low production cost