一、前言高梯度磁选机由于能产生很强的磁力,可以用来有效地处理微细粒弱磁性物料,甚至还可以通过添加磁种(如磁铁矿)来处理非磁性物料。在高梯度磁选过程中,固体物料要用某种流体作为输送介质,才能使之顺利地通过聚磁介质而得以有效地分离。传统的输送介质是水,但也有人根据不同工艺过程的要求,研究用空气、烟气、液氮、 I. INTRODUCTION High Gradient Magnetic Separators can be used to effectively treat fine-grained, weakly magnetic materials due to their strong magnetic force. They can even handle non-magnetic materials by adding magnetic species such as magnetite. In the process of high gradient magnetic separation, the solid material should use some kind of fluid as the transportation medium, so that it can be effectively separated through the magnetic separation medium. The traditional transport medium is water, but also some people according to the requirements of different processes, research using air, flue gas, liquid nitrogen,