NON-CONVENTIONAL APPROACH FOR IMPURITIES REDUCTION DURING AND AFTER MANUFACTURING OF PHOSPHORIC ACID | ||||
| Nuclear Sciences Scientific Journal | ||||
| Article 3, Volume 9, Issue 2, October 2020, Page 33-42 PDF (959.63 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/nssj.2020.265527 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| MOHAMMAD M. FAWZY | ||||
| Nuclear Materials Authority, Cairo, Egypt | ||||
| Abstract | ||||
| A non-conventional method to reduce the impurities in the wet process phosphoric acid (WPPA) was applied which divided into two parts: The first part deals with a process which utilizes phosphate rock, fluorosilicic acid, and sulfuric acid to produce phosphoric acid, calcium fluorosilicate, and calcium sulfate slurry by wet method. The second part studied the influence of hydroxyl-apatite (HAP) added to the produced acid for adsorption of uranium, fluorine, rare earth elements (ΣREE), organic matter, and other undesirable components those affected the quality of phosphoric acid. The relevant conditions in the production and absorption processes have been optimized. The results show that, the obtained acid contains low values of suspended & organic matter (191.7 ppm), and fluorine (0.5%). The addition of HAP, in the form of bone powder, produce phosphoric acid contains low concentration of uranium, fluorine, and rare earth elements equals 85, 94.6 and 79% respectively. | ||||
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