Effect of Hematite Concentrate on Iron Ore Pellet Quality

Effect of hematite concentrateHematite concentrate on pelletizing qualityPelletizing quality was studied. High pressure grinding rollerHigh pressure grinding roller was applied to intensify pelletizing qualityPelletizing quality. The results show that compressive strengthCompressive strength of preheated pellet and roasted pellet decreased significantly when the hematite proportion was 20%. High pressure grinding rollerHigh pressure grinding roller can obviously improve the pelletizing strength, specially preheated pellet. For 40% hematite, the specific surface area of the raw material was increased to 1883.8 cm2/g after high pressure grinding rollerHigh pressure grinding roller. And the drop strength, compressive strengthCompressive strength and busting temperature of the green pellet were 7.0 times/0.5 m, 16.87 N/P and greater than 550 °C, respectively. The compressive strengthsCompressive strength of preheated pellet and roasted pellet were 507 N/P and 3170 N/P, respectively.