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METHODS FOR CONCENTRATING AND RECOVERING FERRO NICKEL FROM NICKEL CONTAINING RAW MATERIAL, METHODS FOR RECOVERING NICKEL CONCENTRATE FROM THE CONCENTRATED FERRO NICKEL AND REUSING METHOD OF Fe CONTAINING SOLUTION WASTED FROM THE METHODS
METHODS FOR CONCENTRATING AND RECOVERING FERRO NICKEL FROM NICKEL CONTAINING RAW MATERIAL, METHODS FOR RECOVERING NICKEL CONCENTRATE FROM THE CONCENTRATED FERRO NICKEL AND REUSING METHOD OF Fe CONTAINING SOLUTION WASTED FROM THE METHODS
The present invention relates to a method for enriching ferronickel to a high density from a raw material containing nickel and iron, and more particularly comprising: a step of slurrifying for reducing the raw material containing nickel-iron and then slurrifying same by adding water; a step of acid treating for simultaneously inducing ferronickel separation and iron leaching reactions by injecting into the slurry of the reduced raw material containing nickel-iron, which is obtained from the step of slurrifying, hydrochloric acid having 0.5-1.5 times more moles or sulfuric acid having 0.25-0.75 times more moles than the moles in the reduced raw material containing nickel-iron; a step of filter-separating for eliminating a solution containing iron from the solution which is obtained from the step of acid treating by separating solids containing ferronickel by means of a filter; and a step of enriching for slurrifying the solids containing ferronickel from the step of filter-separating and mixing same with the raw material containing nickel-iron that is reduced, and enriching ferronickel by performing the step of acid treating and the step of filter-separating. Furthermore, the present invention provides a method for recycling a solution containing iron, which is produced and wasted in a method for recovering highly pure nickel from the nickel enriched product and in a method for recovering the nickel enriched product.
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