ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

Published monthly
 

Production of highly purified zirconium oxide from zircon mineral leach liquor using bis-(2-ethylhexyl) phosphate as a promising extractant

A. H. Ali

Nuclear Materials Authority, Cairo, Egypt

 

E-mail: amr_nma@yahoo.com

Received: 17 March 2022  Accepted: 18 June 2022

Abstract:

In this manuscript, efficiency of the used organic solvent for recovering, separating and producing highly purified zirconium oxide from zirconium chloride leach liquor of Rosetta white zircon concentrate was investigated. Zircon mineral was thermally decomposed with caustic soda, cooled, washed with distilled water and then dissolved in hydrochloric acid. Zirconium extraction efficiency reached 91.4% using 10% bis-(2-ethylhexyl) phosphate dissolved in kerosene, 15 min contact time and volume phase ratio O/A 1:1 after 3 stages. Zirconium re-extraction efficiency reached 99.95% using the following optimum conditions 4 molL−1 H2SO4 as an effective stripping agent, 15 min contact time and volume phase ratio O:A 1:1 after 2 stages. Finally, Zr (OH)4 was precipitated in presence and absence of H2O2 by NH4OH solution, filtrated, rinsed with double distilled H2O to remove any impurities several times and dehydrated at 200 °C for 2 h. From XRF and EDAX analysis the produced zirconium oxide in presence of H2O2 is purer than that produced in absence of H2O2.

Keywords: Zircon mineral; Separation; Bis-(2-ethylhexyl) phosphate and purification

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02339-1

 

Chemical Papers 76 (11) 6723–6734 (2022)

Thursday, April 18, 2024

IMPACT FACTOR 2021
2.146
SCImago Journal Rank 2021
0.365
SEARCH
Advanced
VOLUMES
European Symposium on Analytical Spectrometry ESAS 2022
© 2024 Chemical Papers