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Title: METHOD OF PREPARING PROTACTINIUM VALUES

Abstract

Separation and purification from initial acid leaches of pitchblende of Pa is described. This supernatant acid solution is treated with alkali metal carbonates to precipitate Pa. Silica is removed from the precipitate by hydroxide treatment. The Pa residue is dissolved in HNO/sub 3/ and Pa is concentrated by cyclic precipitations with MnO/sub 2/. The last solution is hydrolyzed to precipitate Pa. The Pa precipitate contains Ti and Zr which are removed by ion exchange. (T.R.H.)

Inventors:
; ; ;
Issue Date:
OSTI Identifier:
4206695
Patent Number(s):
2887355
Assignee:
U.S. atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
NSA Number:
NSA-13-022048
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; ACIDITY; ALKALI METALS; CARBONATES; CHEMICAL REACTIONS; CHEMICALS; COMPOUNDS; DENSITY; ENRICHMENT; HYDROLYSIS; HYDROXIDES; IMPURITIES; ION EXCHANGE; LEACHING; MANGANESE OXIDES; NITRIC ACID; ORE PROCESSING; PATENT; PITCHBLENDE; PRECIPITATION; PREPARATION; PROTACTINIUM; PROTACTINIUM COMPOUNDS; REFINING; SEPARATION PROCESSES; SILICON OXIDES; SOLUTIONS; TITANIUM; URANINITES; ZIRCONIUM

Citation Formats

Katzin, L I, Larson, R G, Thompson, R C, and Van Winkle, Q. METHOD OF PREPARING PROTACTINIUM VALUES. United States: N. p., 1959. Web.
Katzin, L I, Larson, R G, Thompson, R C, & Van Winkle, Q. METHOD OF PREPARING PROTACTINIUM VALUES. United States.
Katzin, L I, Larson, R G, Thompson, R C, and Van Winkle, Q. Tue . "METHOD OF PREPARING PROTACTINIUM VALUES". United States.
@article{osti_4206695,
title = {METHOD OF PREPARING PROTACTINIUM VALUES},
author = {Katzin, L I and Larson, R G and Thompson, R C and Van Winkle, Q},
abstractNote = {Separation and purification from initial acid leaches of pitchblende of Pa is described. This supernatant acid solution is treated with alkali metal carbonates to precipitate Pa. Silica is removed from the precipitate by hydroxide treatment. The Pa residue is dissolved in HNO/sub 3/ and Pa is concentrated by cyclic precipitations with MnO/sub 2/. The last solution is hydrolyzed to precipitate Pa. The Pa precipitate contains Ti and Zr which are removed by ion exchange. (T.R.H.)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {5}
}