Apatites of different geological origins exhibit different floatabilities under the direct flotation process. However, the floatability of apatite from different geological origins under reverse flotation, especially in acidic environments, has not yet been reported. In this study, sedimentary (SD), igneous (IG), and sedimentary metamorphic (SM) apatite minerals are chosen as raw materials to investigate the relationship between the geological origin and flotation behavior of apatite in acidic environments, by means of flotation tests and a series of analyses. The geological origin of apatite affects its solubility in an acidic environment. Furthermore, compared to apatite from IG and SM deposits, there is more substitution of PO₄³⁻ by CO₃^2– on apatite from SD deposits, which accelerates the dissolution of Ca²⁺ and Mg²⁺ ions from its surface, thereby causing fewer active sites to remain on its surface. Under the same phosphoric acid dosage, the floatability of the three apatite follows: IG > SM > SD.

不同地质来源的磷灰石在直接浮选过程中表现出不同的可浮性。然而，不同地质来源的磷灰石在反浮选下的可浮性，尤其是在酸性环境中的可浮性尚未见报道。本研究以沉积型（SD）、火成岩型（IG）和沉积变质型（SM）磷灰石矿物为原料，通过浮选试验，研究磷灰石在酸性环境中的地质成因与浮选行为之间的关系。一系列分析。磷灰石的地质来源影响其在酸性环境中的溶解度。此外，与来自 IG 和 SM 矿床的磷灰石相比，CO ₃ ^2-对 PO ₄ ^3-的替代更多在来自 SD 沉积物的磷灰石上，这加速了 Ca ²⁺和 Mg ²⁺离子从其表面溶解，从而导致其表面上保留的活性位点更少。在相同磷酸用量下，三种磷灰石的可浮性为：IG>SM>SD。