Date of Graduation
Statler College of Engineering and Mineral Resources
Felicia F. Peng.
A Florida dolomitic phosphate pebble sample was processed using a 1.2 liter stirrer-tank flotation cell and 2-in ID packed flotation column aiming at achieving a phosphate concentrate containing more than 30% P2O 5 and less than 1.0% MgO contents at high P2O5 recovery.;The characteristics of fatty acid collector, FA-12 and a newly developed PA-31 collector were evaluated for frothability and dolomite flotation rate. The evaluation results show that both reagents have high frothability, but PA-31 has much stronger frothability than FA-12, and higher selectivity in separating dolomite from phosphate mineral.;The mineralogical study indicates that the phosphate pebble sample needs to be ground to minus 150 mum (-100 mesh) for liberation of dolomite from phosphate. For the stirrer-tank cell, the composite phosphate concentrate has 31.66% P2O5 and 0.79% MgO at the overall P 2O5 recovery of 92%. For packed column flotation, the composite phosphate concentrate has 30% P2O5 and 0.96% MgO at the overall P2O5 recovery of 91%.
Gu, Zhengxing, "Fine particle flotation for Florida dolomitic phosphate pebbles" (2002). Graduate Theses, Dissertations, and Problem Reports. 1251.