Upgrading of Abu-Tartur calcareous phosphate via selective leaching by organic acids [ READ ]
A.R. Bakry, N.A. Abdelfattah, A.B. Farag, and A.M. Elwy
Abu-Tartur PR contains about 49.20% apatite mineral equivalent to 21.8% P2O5 and more than 50% of undesirable components including about 26% carbonate minerals. In this study acetic acid was used to eliminate the carbonate content of Abu-Tartur PR which would save acid consumption besides increasing the tenor of P2O5, U and Ln. The relevant acetic acid leaching factors involved the grain size, the acid concentration, the S/L ratio and the reaction time. Upgrading of Abu-Tartur PR has resulted in a marketable and industrially acceptable phosphate grades (about 30% P2O5) besides improving the assay of both U and Ln.
A.R. Bakry, N.A. Abdelfattah, A.B. Farag, and A.M. Elwy
Abu-Tartur PR contains about 49.20% apatite mineral equivalent to 21.8% P2O5 and more than 50% of undesirable components including about 26% carbonate minerals. In this study acetic acid was used to eliminate the carbonate content of Abu-Tartur PR which would save acid consumption besides increasing the tenor of P2O5, U and Ln. The relevant acetic acid leaching factors involved the grain size, the acid concentration, the S/L ratio and the reaction time. Upgrading of Abu-Tartur PR has resulted in a marketable and industrially acceptable phosphate grades (about 30% P2O5) besides improving the assay of both U and Ln.
