Abstract: Application situation of normal flocculant which pass through modification in beneficiation test of high phosphorus hematite in west of Hubei is introduced, conditions like type, optimum dosage and optimum pH value of flocculant suit to the beneficiation of this high phosphorus hematite are confirmed. Flocculant adsorbs mineral particle with negative electrification selectively in flocculation process, reduces the phosphorus content of rough concentrate effectively, provides conditions for further enhance iron grade of concentrate through reverse flotation. Test result shows the flocculation ability of modified polyacrylamide is strong and has good selectivity, is a sort of good flocculant of hematite.

Key words: Flocculant, Oolitic hematite, Selectivity, Collector, Fine particles