Abstract:With regard to titanium cannot be extracted into organic phase when combined with hydrogen peroxide in sulfuric acid-oxygen peroxide solution, scandium in scandium enrichment was separated with main harmful impurity titanium through dilute sulfuric acid + hydrogen peroxide dissolution and secondary extraction process. The results show that secondary extraction rate of scandium is 99.85% and >99.9% of TiO2 does not enter organic phase under the optimum conditions including volume ratio between hydrogen peroxide, concentrated sulfuric acid and water of 1︰3.5︰20, P204 concentration of 20%, A/O=10/1, extraction temperature of 25 ℃, and extraction time of 5 min. The purpose to remove impurity TiO2 in scandium enrichment is achieved.