Adapting technology to beneficiate a low-grade phosphorite ore
Tóm tắt
A flotation process has been developed to successfully treat ore from the Santo Domingo phosphate deposit in Baja California Sur. The ore contained less than 4% P2O5 with quartz, silicates, and carbonates as gangue minerals. Flotation of the low-grade feed in seawater required that the conventional Crago process, comprising direct anionic flotation, deoiling, and inverse cationic flotation, be augmented by an anionic cleaner flotation step, phosphate depression, and a calcite flotation step.
Tài liệu tham khảo
Hsieh, S.S., and Lehr, J.R., 1985, “Beneficiation of Dolomitic Idaho Phosphate Rock by the TVA Diphosphonic Acid Depressant Process,” Minerals and Metallurgical Processing, Vol. 2, No. 1, February, pp. 10–13.
Johnston, D.J., and Leja, J., 1978, “Flotation Behavior of Calcium Phosphates and Carbonates in Orthophosphate Solution,” IMM Transactions, Vol. 87, December, pp. C237–242.
Leyshon, D.W., and Schneider, R.T., 1980, “The Evaluation of Phosphate Rock,” Jacobs Engineering Group Inc., Lakeland, FL, August 27.
Moudgil, B.M., and Chanchani, R., 1985, “Selective Flotation of Dolomite From Francolite Using Two-Stage Conditioning,” Minerals and Metallurgical Processing, Vol. 2, No. 1, February, pp. 19–25.
Williams, J.M., Tavrides, J.G., and Farias, R.G., 1985, “Special Considerations in Development of Mining and Beneficiation Techniques for Unconventional Types of Phosphate Ore,” Zellars-Williams Co., Jacobs Engineering Group Inc., Lakeland, FL.