本文研究了回收细粒及超细粒赤铁矿和铬铁矿的湿式磁分离法。这些方法包括高场强及高梯度磁分离,载体或“生铁增碳”磁分离,磁诱导团聚及磁种。本次试验研究结果说明湿式磁分离是回收细粒及超细粒矿物的更为有效的方法。本研究还表明其它一些方法可用来提高粒子的团聚或磁感应的能力。本文还对这些矿物相对磁场强度、温度及粒子粒度的磁性行为进行了讨论。 This paper studies the wet magnetic separation method for the recovery of fine and ultrafine hematite and chromite. These methods include high field strength and high gradient magnetic separation, carrier or “pig iron” magnetic separation, magnetically induced agglomeration and magnetic species. The experimental results show that wet magnetic separation is a more effective method to recover fine and ultrafine minerals. This study also shows that other methods can be used to increase the ability of particles to agglomerate or magnetically induce. This paper also discusses the magnetic behavior of the relative magnetic field strength, temperature and particle size of these minerals.