CHARACTERISTICS AND LEACHABILITY OF ZINC AND RARE EARTHS FROM ABU RUSHIED ORE MATERIAL, SOUTH EASTERN DESERT, EGYPT | ||||
| Al-Azhar Bulletin of Science | ||||
| Article 13, Volume 18, Issue 1-A, June 2007, Page 63-74 PDF (258.23 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/absb.2007.11104 | ||||
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| Abstract | ||||
| A rare earth (REEs) and Zn ore martial belonging to a poly-metallic mineralization of Abu Rushied area, Southern Eastern Desert of Egypt is subjected to mineralogical analysis and acid leaching. The former proved that both Zn (assaying 5%) and REEs (assaying 3.1%) are found adsorbed upon the iron oxide mineral goethite (equivalent to 15 % Fe2O3). Acid leaching studies using sulphuric acid defined the optimum conditions for dissolving about 94% of Zn and 92.5% of REEs. Besides being a powerful oxidizing agent and can create chloric acid, NaClO3 was incorporated in the leaching process to decrease the required input sulphuric acid. In addition, NaClO3 adequate Na2SO4 that could be used in the early precipitation of the (light REEs)LREEs as their double sulphates. | ||||
| Keywords | ||||
| LEACHABILITY; zinc; Rare Earths; ABU RUSHIED ORE MATERIAL | ||||
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