Scandium extraction process

The present invention provides a selective extraction of scandium and a low cost method of recovering from an acidic solution containing calcium, magnesium, scandium in. Scandium extraction process of the present invention, the use of extraction agent amide derivative represented by the general formula consisting of calcium, magnesium and scandium in acidic solution containing a solvent extraction. Wherein, R1 and R2 represent the same or different alkyl group, R3 represents a hydrogen atom or an alkyl group. Preferably, the amide derivative is glycinamide derivatives, amide derivatives of amino groups, amide derivatives of lysine and aspartate derivative of any one or more. Preferably the pH of the acid solution previously adjusted to 1 or more and 4 or less.