Abstract: The process consisting of one stage grinding-HIMS (high intensity magnetic separation)-reverse flotation was adopted for the beneficiation of a limonite ore according to its properties. The test results show that at a 60.0% -200 mesh grinding fineness, by a closed-circuit process of one rougher of HIMS,  a re-concentration of HIMS concentrate, two scavengers of HIMS tailings, reverse flotation of the tailings of re-concentration of HIMS concentrate and the concentrate of re-concentration of HIMS tailing, and reverse flotation tailing's returning to the re-concentration operation of HIMS tailings, an HIMS concentrate with a 52.24% yield, 54.04% grade and 67.03%recovery and a final tailing with a 47.76% yield, 29.08% grade and 32.97% recovery can be obtained.

Key words: Limonite, High intensity magnetic separation, Reverse flotation