镁橄榄石与顽火辉石均属含镁的硅酸盐矿物,两者在比重、磁化率等物理性质上颇为接近,因此用重选和电磁选难以分离。如果在双目镜下挑选,既费时间,质量也难以保证。为了解决这两者的分离问题,我们曾对陕西松树沟SW—16和SW—4号样品反复试验,先用一般方法除去其它矿物,然后根据浮选原理,选用H_2SO_4作调整剂,月桂胺作捕收剂,从 Forsterite and enstatite are magnesium silicate minerals, both in the proportion, the magnetic susceptibility and other physical properties are quite close, so with the re-election and electromagnetic separation is difficult to separate. If the binocular selection, both time-consuming, quality is difficult to guarantee. In order to solve the problem of separation between the two, we have repeatedly tested the samples of SW-16 and SW-4 in Songshugou, Shaanxi. The other minerals were first removed by the general method. Then, based on the flotation principle, H_2SO_4 was used as modifier, Collector, from