skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Process for separation of the rare earths by solvent extraction

Abstract

Production rates for solvent extraction separation of the rare earths and yttrium from each other can be improved by the substitution of di(2-ethylhexyl) mono-thiophosphoric acid for di(2-ethylhexyl) phosphoric acid. The di(2-ethylhexyl) mono-thiophosphoric acid does not form an insoluble polymer at approximately 50% saturation as does the former extractant, permitting higher feed solution concentration and thus greater throughput.

Inventors:
 [1];  [2]
  1. Clarendon Hills, IL
  2. Joliet, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
862790
Patent Number(s):
4016237
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; separation; rare; earths; solvent; extraction; production; rates; yttrium; improved; substitution; 2-ethylhexyl; mono-thiophosphoric; acid; phosphoric; form; insoluble; polymer; approximately; 50; saturation; former; extractant; permitting; feed; solution; concentration; throughput; production rate; feed solution; rare earths; solvent extraction; rare earth; phosphoric acid; soluble polymer; insoluble polymer; solvent extract; solution concentration; soluble poly; production rates; /423/

Citation Formats

Mason, George W, and Lewey, Sonia. Process for separation of the rare earths by solvent extraction. United States: N. p., 1977. Web.
Mason, George W, & Lewey, Sonia. Process for separation of the rare earths by solvent extraction. United States.
Mason, George W, and Lewey, Sonia. Tue . "Process for separation of the rare earths by solvent extraction". United States. https://www.osti.gov/servlets/purl/862790.
@article{osti_862790,
title = {Process for separation of the rare earths by solvent extraction},
author = {Mason, George W and Lewey, Sonia},
abstractNote = {Production rates for solvent extraction separation of the rare earths and yttrium from each other can be improved by the substitution of di(2-ethylhexyl) mono-thiophosphoric acid for di(2-ethylhexyl) phosphoric acid. The di(2-ethylhexyl) mono-thiophosphoric acid does not form an insoluble polymer at approximately 50% saturation as does the former extractant, permitting higher feed solution concentration and thus greater throughput.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {4}
}

Patent:

Save / Share: