Europium separation from a middle rare earths concentrate derived from Egyptian black sand monazite

Rabie, K.A., Sayed, S.A., Lasheen, T.A. and Salama, Ibrahim El Moaty 2007. Europium separation from a middle rare earths concentrate derived from Egyptian black sand monazite. Hydrometallurgy 86 (3-4) , pp. 121-130. 10.1016/j.hydromet.2006.10.007

Full text not available from this repository.

Abstract

Europium separation from a middle rare earth concentrate has been achieved successfully by using the combined chemical reduction–precipitation technique. The separation method depends on the reduction of europium by metallic zinc to its bivalent oxidation state followed by selective precipitation of the sparingly soluble europium (II) sulphate, while leaving the other rare earth sulphates in solution. This process consists of two steps; the first is reduction, which involves passing europium (III) chloride solution through a column packed with zinc particles. The other step involves the precipitation of the produced europium (II) chloride using a sulphate salt under inert atmosphere. Variables such as column dimensions, acidity, europium concentration in feed solution, contact time, ageing time, and concentration of the precipitating agent, have been evaluated with a pure europium synthetic solution. Based on the obtained results, a separation process was suggested for the separation of europium from a middle rare earth concentrate extracted from an Egyptian beach sand monazite. The result of this working-up is a europium yield of about 91% of the amount employed with a purity of about 97%.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	Europium separation; Monazite; Zinc reductor; Reduction; Precipitation
Publisher:	Elsevier
Last Modified:	19 Mar 2016 22:21
URI:	https://orca.cardiff.ac.uk/id/eprint/13149

Citation Data

Cited 32 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item