Details:

Personal Author:
Moore, B. W. ; Froisland, L. J. (Lawrence J.) ; Petersen, A. E. ;
Moore, B. W. ; Froisland, L. J. (Lawrence J.) ; Petersen, A. E. ; Less -
Corporate Authors:
United States. Bureau of Mines. ;
Description:
"The U.S. Bureau of Mines investigated the separation of heavy rate-earth elements (REE) in an ion exchange process. An ion-exchange column consisting of two sections, a loading section and a separation section, provides high 1evels of REE loading and good REE separation with an expected processing cycle of less than a month, while current ion-exchange technology requires more than 5 mouths. A different resin is used in each section: sulfonic resin in the loading section and iminodiacetic resin in the separation section. The separation section is further divided into two segments: the first conditioned with NH4 and the second with acid. Erbium is loaded onto both segments of the separation column as a retaining ion. Bands of mixed REE eluting between separated bands of pure REE were recycled directly to the columns. Without mixed-band recycle, over 80% of the REE eluted from the column was separated into fractions with 99% purity of each element; with such recycle, the percentage of separated elements can be increased to around 90%." - NIOSHTIC-2 NIOSHTIC no. 20026516
Subject:
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Ion Exchange.
Ion Exchange Resins.
Rare Earth Metals -- Metallurgy.

Series:
Report of investigations (United States. Bureau of Mines) ; 9564;
Document Type:
Report ;
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:b339a09f956116a0fcee0714b745eb7100d15e1312317186c4e45bce7c6e9c41
File Type:

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