Abstract: This is an essay in the field of mineral processing engineering. Sandium in vanadium titan-magnetite tailings in Panzhihua is mainly found in pymene and titanium ore, some pymene and other silicate minerals are embedded with titanium tailings, and the mineral embedding has complex relationship and similar properties, low and scattered scandium element content, scrub-settlement pre-dumping-selective two-stage anti-flotation dumping is adopted; the dumping rate is 30.32%; scandium element is increased from 60.96 g/t to 70.90 g/t, and the Sc₂O₃ recovery rate is 81.04%.