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由〈美国〉矿业局研究的一种浮选方法可用于分离福斯霍利亚层中非蚀变磷酸盐矿石里的碳酸盐和磷酸盐矿物。这个方法包括用氟硅酸抑制磷酸盐矿物和用脂肪酸乳浊液浮选碳酸盐矿物。在个别的实验室试验中,有选择地除去碳酸盐,磷酸盐回收率可达到60-80％。在连续循环试验中,需要分级和分别处理粗粒和细粒级,以得到65％的P_2O_5的回收率。精矿品位P_2O_526～33％。 浮选尾矿主要含碳酸盐和磷酸盐矿物,是一种可能利用的肥料,当与H_3PO_4反应后,就可得到约含P_2O_540％的浓缩过磷酸盐肥料。
A flotation method studied by the US Bureau of Mines can be used to separate carbonates and phosphate minerals from non-altered phosphate ore from the Flowserve layer. This method involves the fluorosilicic acid inhibition of phosphate minerals and the flotation of carbonate minerals with fatty acid emulsions. In individual laboratory tests, the carbonate is selectively removed and phosphate recovery can reach 60-80%. In a continuous cycle test, coarse and fine grades need to be graded and separately treated to give a 65% recovery of P2O5. Concentrate grade P_2O_526 ~ 33%. Flotation tailings mainly contain carbonate and phosphate minerals, is a possible fertilizer, when reacted with H_3PO_4, can be about P_2O_540% of concentrated phosphate fertilizer.