磷块岩矿石常常是含有大量碳酸盐岩和石英并与胶磷矿伴生,浸染粒度很细,不易浮选分离,特别是碳酸盐岩与胶磷矿的浮选分离更较困难。国内外学者进行了大量的研究工作。本文仅就矿物表面的ζ—电位与浮选的关系,借助有关资料,结合我们所做的工作,略述磷块岩直接浮选胶磷矿问题。 Phosphorite ore usually contains a large amount of carbonate and quartz and is associated with colloidal phosphate. The disseminated fine particle size is not easy to be separated by flotation. In particular, the flotation separation of carbonate rock and colloidal phosphate rock is more difficult. Scholars at home and abroad conducted a lot of research work. In this paper, the relationship between ζ-potential of mineral surface and flotation is discussed. With the help of relevant data and the work we do, the problem of direct flotation of phosphogypsum with phosphorite is briefly described.