The invention relates to a
dressing method for high-
phosphor-content oolitic
hematite. The
dressing method has the technical scheme that the method comprises the following steps that 1, high-
phosphor-content oolitic
hematite ore with the crushing
granularity smaller than 20mm to 30mm is fed into an ore
grinding machine, and the high-
phosphor-content oolitic
hematite is subjected to continuous two-section ore milling until the ore with the ore
fineness smaller than 0.074 accounts for about more than 90 weight percent; 2, the milled ore pulp passes through a pulp removing hopper for removing
sludge smaller than 0.020m, and the removed
sludge is directly subjected to
tail-escaping; 3, the ore pulp subjected to the
sludge removal is subjected to twice continuous wet type strong magnetic sorting,
tailings in the first strong magnetic sorting and
tailings in the second strong magnetic sorting are directly discharged into a tailing
storage pool; 4, the hematite ore pulp subjected to the strong magnetic sorting is subjected to re-sorting by a table
concentrator to obtain
coarse particle hematite concentrate; 5, the re-sorted table
concentrator middlings and
tailings after the
coarse particle hematite concentrate sorting are mixed, then, a one-coarse one-sweep and three-concentration floatation process is adopted, fine particle hematite concentrate is obtained, the two parts of hematite concentrate including the coarse hematite concentrate and the fine hematite concentrate are mixed, dephosphorizing agents are added for stirring treatment, and the final oolitic hematite concentrate is obtained. The method has the characteristics that the process flow is simple, the in-site operation is simple, the cost is low, the grade of the oolitic hematite concentrate is high, and the
recovery rate is high. The TFe grade of the obtained oolitic hematite concentrate is higher than 58 weight percent, P is less than 0.12 weight percent, and the
recovery rate is higher than 70 weight percent.