METHOD OF RECOVERY OF HIGH PURITY PLATINUM FROM A LEACHING SOLUTION OF SPENT CATALYST

摘要

The present invention relates to a method for recovering high purity platinum (Pt) at high recovery rate from leaching solution of spent catalyst. According to the present invention, the method for recovering high purity platinum from leaching solution of spent catalyst includes: (a) a step of selectively extracting iron to a first organic solvent by making the first organic solvent come in contact with the leaching solution of spent catalyst; (b) a step of selectively extracting platinum to a second organic solvent by making the second organic solvent come in contact with extracted remaining solution from which the iron is removed; and (c) a step of desorbing the platinum from the second organic solvent from which the platinum is extracted.