用钒钛磁铁矿精矿进行成球试验,由于粒度较粗(大于0.3 mm占12.79％,小于200目只43.69％),成球性差,即使在添加大量消石灰或皂土的情况下,所得生球强度仍然很低,落下仅1～2次。因此必须进行精矿再磨。为了减少再磨费用,曾设想按照付列尔公式y=100(d/D)~(0.5)准备粒度组成作为造球原料,因此采取部分再磨,按不同比例混合使 The vanadium titanomagnetite concentrate was used for balling test. Due to the coarse grain size (larger than 0.3 mm, accounting for 12.79% and smaller than 200 mesh, only 43.69%), the ball formation was poor. Even with the addition of large amount of slaked lime or bentonite, Bulb intensity is still low, falling only 1 or 2 times. Therefore, we must concentrate and then grinding. In order to reduce the cost of regrinding, it was envisaged to prepare the particle size composition as the pelletizing material according to the formula of Fuer formula, y = 100 (d / D) ~ (0.5), so that partial regrasification, mixing in different proportions