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提出了弱磁性矿物磁絮凝的理论模型。首次推导出磁絮凝磁场强度的界限值,并对颗粒粒度、磁化率和表示矿物悬浮液特性的其他因素的关系进行了试验。由模型计算出的稳定性系数和絮凝速度表明,只要颗粒相互作用总能量为零,就开始磁絮凝,同时,絮凝时间相当短。后一情况下,磁场强度界限值(尤其对大颗粒)增大。但是,对所有研究过的矿物系统(赤铁矿,菱铁矿和针铁矿),絮凝的磁感应强度处于工业上可能的磁场强度(0.1-3T)范围内,对粗而磁性低的颗粒取大值,对细而磁性高的颗粒取小值。提出了在处理铁矿石中磁絮凝的工业运用的概要。
A theoretical model of magnetic flocculation of weak magnetic minerals was proposed. The demarcation of magnetic flocculation field strength was deduced for the first time and the relationship between particle size, magnetic susceptibility and other factors that characterize mineral suspensions was tested. The stability coefficients and flocculation velocities calculated by the model show that as long as the total energy of the particle interaction is zero, the magnetic flocculation begins and the flocculation time is quite short. In the latter case, the magnetic field strength limit (especially for large particles) increases. However, for all studied mineral systems (hematite, siderite and goethite), the magnetic induction of flocculation is in the range of commercially available magnetic field strengths (0.1-3T) and for coarse and low magnetic particles Large value, fine and high magnetic particles take small value. An overview of industrial applications of magnetic flocculation in iron ore processing is presented.