Abstract: In order to make the pellets in Chengchao Iron Mine meet the requirement of hydrogen base shaft furnace in terms of quality，on the basis of detailed analysis of on-site concentrate，the concentration test was carried out by using magnetic levitation separator. The results showed that concentrate with grade of 68.63% and recovery rate of 96.51% could be obtained directly by two-stage cleaning with magnetic levitation separator without grinding，and tailings with grade of 36.11% and recovery rate of 3.49% could be produced. Under the conditions of grinding fineness of -37 μm accounting for 75%，rising flow of 12 L/min and magnetic field intensity of 8.8 kA/m，by two-stage cleaning with magnetic levitation separator， concentrate with grade of 68.71% and recovery rate of 98.81% was obtaine. And the grade of tailings is 18.38% and can be reduced to 14.62% after magnetic separation reselection. The low grade concentrate with a grade of 51.06% and process recovery rate of 0.34% can be returned to the regrinding operation. Although the two processes can obtain the concentrate meeting the target requirements，the process with pregrinding not only has slightly higher concentrate grade，and the recovery rate is 2.3 percentage points higher，so the process has certain advantages.

Key words: magnetite concentrate, pellet, direct reduction with hydrogen base shaft furnace, magnetic levitation separator