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用于同位素地质、微量元素研究的磁铁矿单矿物,不仅要求分离纯度高,而且在某些情况下不允许用浮选和化学方法处理.本文介绍的是磁铁矿分离方法的改进试验.1.单体解离度的确定磁选分离磁铁矿,一般是从粗粒级开始,再将含有连生体的磁铁矿粗精矿磨细,使连生体单体解离,选出纯精矿.实践证明,多次反复磁选,会使磁铁矿人为磁化而互相吸引,产生磁团.磁团或磁链常裹带一些杂质,淘洗和磁选不易提纯.当矿石或岩石中磁铁矿粒度不均时,这种由粗而细的分离方法所得到的精矿代表性不强.因此,我们采用了一次破碎至
Magnetite single minerals for isotope geology and trace element studies not only require high separation purity but also, in some cases, flotation and chemical methods are not allowed.This paper presents an improved test of magnetite separation methods. 1. Determination of the monomer dissociation Magnetic separation of magnetite, usually from the coarse-grained level, and then containing the raw magnetite concentrate ground fine, so that even the single dissociation of monomers, elected pure Concentrates.Practice has proved that repeated magnetic separation, magnetism will cause the magnetite each other to attract, resulting in magnetic groups. Magnetic or flux often bring some impurities, washing and magnetic separation difficult to purify .Oil or rock When the average size of the magnetite is not uniform, the concentrate obtained by the coarse and fine separation method is not very representative, so we use a crushing