Abstract
Earlier work on the preparation of uranium by F.A. Forward and his colleagues has shown the possibilities presented by oxidative lixiviation of ores in a carbonate medium, and the catalytic reduction of uranyl carbonate solutions by hydrogen. The carbonate attack is of considerable interest because of the selectivity of the uranium dissolution, which means it can be applied particularly to the treatment of low grade ores with a reduced consumption of cheap reagents. The subsequent reduction with hydrogen is of the same nature, and not only enables relatively dilute uranyl carbonate solutions to be treated, but also avoids any significant alteration of the attacking solution which can therefore be used again in the lixiviation stage. The experimental work, undertaken at the request of the Commissariat a I'Energie Atomique, was aimed at determining the quantitative characteristics of each of the two stages in order to ascertain their possibilities for industrial application to the principal low grade ores found in France. (author) [French] Les travaux anterieurs de F.A. FORWARD et de ses collaborateurs ont mis en evidence les possibilites que presentent, dans la preparation de l'uranium, la lixiviation oxydante des minerais en milieu carbonate, et la reduction catalytique des solutions d'uranyl carbonate
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Mouret, P;
[1]
Balaceanu, J C;
Coussemant, F
[2]
- Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
- Institut Francais du Petrole (IFP), 92 - Rueil-Malmaison (France)
Citation Formats
Mouret, P, Balaceanu, J C, and Coussemant, F.
Oxidative lixiviation of pitchblende and precipitation of uranium with hydrogen; Lixiviation oxydante des pechblendes et precipitation de l'uranium par l'hydrogene.
France: N. p.,
1958.
Web.
Mouret, P, Balaceanu, J C, & Coussemant, F.
Oxidative lixiviation of pitchblende and precipitation of uranium with hydrogen; Lixiviation oxydante des pechblendes et precipitation de l'uranium par l'hydrogene.
France.
Mouret, P, Balaceanu, J C, and Coussemant, F.
1958.
"Oxidative lixiviation of pitchblende and precipitation of uranium with hydrogen; Lixiviation oxydante des pechblendes et precipitation de l'uranium par l'hydrogene."
France.
@misc{etde_20912739,
title = {Oxidative lixiviation of pitchblende and precipitation of uranium with hydrogen; Lixiviation oxydante des pechblendes et precipitation de l'uranium par l'hydrogene}
author = {Mouret, P, Balaceanu, J C, and Coussemant, F}
abstractNote = {Earlier work on the preparation of uranium by F.A. Forward and his colleagues has shown the possibilities presented by oxidative lixiviation of ores in a carbonate medium, and the catalytic reduction of uranyl carbonate solutions by hydrogen. The carbonate attack is of considerable interest because of the selectivity of the uranium dissolution, which means it can be applied particularly to the treatment of low grade ores with a reduced consumption of cheap reagents. The subsequent reduction with hydrogen is of the same nature, and not only enables relatively dilute uranyl carbonate solutions to be treated, but also avoids any significant alteration of the attacking solution which can therefore be used again in the lixiviation stage. The experimental work, undertaken at the request of the Commissariat a I'Energie Atomique, was aimed at determining the quantitative characteristics of each of the two stages in order to ascertain their possibilities for industrial application to the principal low grade ores found in France. (author) [French] Les travaux anterieurs de F.A. FORWARD et de ses collaborateurs ont mis en evidence les possibilites que presentent, dans la preparation de l'uranium, la lixiviation oxydante des minerais en milieu carbonate, et la reduction catalytique des solutions d'uranyl carbonate par l'hydrogene. L'attaque carbonatee presente, en effet, un interet considerable du fait de la selectivite de la dissolution de l'uranium qui permet de l'appliquer en particulier au traitement des minerais pauvres avec une consommation reduite de reactifs peu couteux. La reduction subsequente par l'hydrogene presente les memes caracteres et permet non seulement de traiter des solutions relativement diluees d'uranyl carbonate, mais encore evite toute modification significative de la solution d'attaque qui peut donc etre reemployee dans l'etape de lixiviation. L'experimentation, entreprise a la demande du Commissariat a l'Energie atomique, avait pour but de determiner les caracteristiques quantitatives de chacune des deux etapes afin d'en preciser les possibilites d'application industrielle aux principaux minerais pauvres fran is. (auteur)}
place = {France}
year = {1958}
month = {Jul}
}
title = {Oxidative lixiviation of pitchblende and precipitation of uranium with hydrogen; Lixiviation oxydante des pechblendes et precipitation de l'uranium par l'hydrogene}
author = {Mouret, P, Balaceanu, J C, and Coussemant, F}
abstractNote = {Earlier work on the preparation of uranium by F.A. Forward and his colleagues has shown the possibilities presented by oxidative lixiviation of ores in a carbonate medium, and the catalytic reduction of uranyl carbonate solutions by hydrogen. The carbonate attack is of considerable interest because of the selectivity of the uranium dissolution, which means it can be applied particularly to the treatment of low grade ores with a reduced consumption of cheap reagents. The subsequent reduction with hydrogen is of the same nature, and not only enables relatively dilute uranyl carbonate solutions to be treated, but also avoids any significant alteration of the attacking solution which can therefore be used again in the lixiviation stage. The experimental work, undertaken at the request of the Commissariat a I'Energie Atomique, was aimed at determining the quantitative characteristics of each of the two stages in order to ascertain their possibilities for industrial application to the principal low grade ores found in France. (author) [French] Les travaux anterieurs de F.A. FORWARD et de ses collaborateurs ont mis en evidence les possibilites que presentent, dans la preparation de l'uranium, la lixiviation oxydante des minerais en milieu carbonate, et la reduction catalytique des solutions d'uranyl carbonate par l'hydrogene. L'attaque carbonatee presente, en effet, un interet considerable du fait de la selectivite de la dissolution de l'uranium qui permet de l'appliquer en particulier au traitement des minerais pauvres avec une consommation reduite de reactifs peu couteux. La reduction subsequente par l'hydrogene presente les memes caracteres et permet non seulement de traiter des solutions relativement diluees d'uranyl carbonate, mais encore evite toute modification significative de la solution d'attaque qui peut donc etre reemployee dans l'etape de lixiviation. L'experimentation, entreprise a la demande du Commissariat a l'Energie atomique, avait pour but de determiner les caracteristiques quantitatives de chacune des deux etapes afin d'en preciser les possibilites d'application industrielle aux principaux minerais pauvres fran is. (auteur)}
place = {France}
year = {1958}
month = {Jul}
}