Phosphate, phosphoric acid and phosphogypsum natural ...
2021-6-5 · Sample preparation. The used phosphoric acid has been produced in Phosphate Fertilizers and Chemicals Company, Egypt, using the Di-hydrate wet process throughout four main phases: a) milling, b) reaction, c) filtration and d) concentration [].In the first stage, El-Sebeaya phosphate rock is milled by a ball mill to the required mesh size (about 100 µm), then