Extraction of Zirconium From Iraqi Bauxite Ore
Engineering and Technology Journal,
2020, Volume 38, Issue 10A, Pages 1421-1429
AbstractThis research is devoted to the study of the extraction of zirconium from Iraqi Bauxite Ore by using hydrometallurgical method. The chemical analysis was done to the bauxite ore by using X-ray florescence, X-ray diffraction and atomic absorption spectroscopy. Zirconium Extraction was performed via three stages; the first stage is leaching of bauxite with sodium hydroxide for alumina leaching. The second stage is leaching of zirconium species from the remained powder produced from stage one after washing with deionized water and, nitric acid (HNO3 solutions). The results of the first stage has reflected the recovery of 42.27 % of Al2O3 which has been leached 100°C temperature, 7.5 molar of NaOH, liquid to solid ratio of 20/1, and stirring rate 450 rpm. The highest leaching percent of zirconium (Zr%) from the red mud approached 98.48 % at 100°C temperature, 7 molar acid concentration, 120 min. contact time, solid to liquid ratio (S/L) of 16/1, and stirring rate of 450 rpm. 99.47% recovery of zirconium was accomplished from nitric acid solutions by use of 3molar tri-n-butylephosphate (TBP)in kerosene at ,contact time for 6 min, and organic to aqueous phase (O/A) of 4/1.
 V. G. Hill, “The mineralogical and genesis of bauxite deposit of Jamaica, B.W.I,” University of Toronto, Canada, pp. 676-678, 1950.
 D. S. Rao, and B. Das, “Characterization and beneficiation studies of a low grade bauxite ore,” J. Inst. Eng. India, PP.81-91, 2014.
 D. Survachat, “Zirconium solvent extraction using organophosphorus compound,” MSc. Thesis, McGiII University, Montreal, Canada, PP. 1-19, 1992.
 J. B .Hedrick, “Zirconium and hafanium ,” U.S. Geological Survey Minerals Yearbook, 2000.
 G. Pretorius, “Applied solid state chemistry of zircon (ZrSiO4) and zirconia,” Ph.D. Thesis, University of Pretoria, RSA, 1995.
 K.A. Shahid, D. Sahed, S. Jan, and A. Masood,and J. Akhtar, “Extraction of zirconium from ziron,” Nuclear Materials Division, Pakistan Institute of Nuclear Science and Technology P.O. Nilore, Rawalpindi, 1985.
 M. Abood, “Probable beneficiation of cast bauxite ore by physical method,” State Establishment of Geological Survey and Mining, Department of Mineral Dressing, 1995.
 A. El-Sayed and, Abdel-Aal, “Leaching kinetics of gibbsite bauxite with sodium hydroxide,” E3S Web of Conferences, Vol. 8, pp. 1-8, 2016.  I. V. Blazheva, Yu. S. Fedorov, B. Ya. Zilberman and L. G. Mashirov, “Extraction of zirconium with tibutyle phosphate from nitric acid solutions,” Radiochemistry, Vol 50, No. 3, PP. 256-260, 2008.
 R. Shabana, F. Haez, “Studies on the extraction behavior of zirconium mixed aqueous media with TBP,” Journal of Radio Analytical Chemistry, Vol. 29, pp. 99-107, 1976.
 R.O. Ajemba and O.D.Onukwuli, “Process optimization of sulphric acid leaching of alumina from Nteje clay using central composite rotatable design,” International Journal of Multidisciplinary Sciences and Engineering, Vol 3, No.5, pp1-7, 2012.  K, R. Salles, “Concentration of bauxite fines via froth flotation,” Rem: Revista Escola de Minas, Vol. 62, No.3, 2009.
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