Limits...
Mineralogy and uranium leaching of ores from Triassic Peribaltic sandstones.

Gajda D, Kiegiel K, Zakrzewska-Koltuniewicz G, Chajduk E, Bartosiewicz I, Wolkowicz S - J Radioanal Nucl Chem (2014)

Bottom Line: Satisfactory results were obtained for the alkaline leaching process.Almost 100 % of uranium was leached with alkaline carbonate solution.In post leaching solutions only uranium and small amounts of vanadium were present.

View Article: PubMed Central - PubMed

Affiliation: Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.

ABSTRACT

The recovery of uranium and other valuable metals from Polish Peribaltic sandstones were examined. The solid-liquid extraction is the first stage of the technology of uranium production and it is crucial for the next stages of processing. In the laboratory experiments uranium was leached with efficiencies 71-100 % by acidic lixiviants. Satisfactory results were obtained for the alkaline leaching process. Almost 100 % of uranium was leached with alkaline carbonate solution. In post leaching solutions only uranium and small amounts of vanadium were present.

No MeSH data available.


Related in: MedlinePlus

Effect of liquid/solid ratio (vol./wt. basis) on uranium leaching efficiency (sample 21/10/141). Process conditions: particle size: 0–0.2 mm,10 % H2SO4, oxidizing agent: MnO2, 60 °C,1 h, agitation rate: 500 rpm
© Copyright Policy - OpenAccess
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4514638&req=5

Fig9: Effect of liquid/solid ratio (vol./wt. basis) on uranium leaching efficiency (sample 21/10/141). Process conditions: particle size: 0–0.2 mm,10 % H2SO4, oxidizing agent: MnO2, 60 °C,1 h, agitation rate: 500 rpm

Mentions: The selection of proper solid to liquid ratio (the weight of ores to volume of lixiviant) is important for optimization the leaching process. The effect of the solid to liquid ratio depends on e.g. grain distribution and free surface [19]. For this reason it was necessary to test the effect of solid to liquid ratio on leaching operations of Polish sandstones. This effect was significant as it shown on Fig. 9. The yield of uranium extraction increased with decrease of density of slurries. The optimum solid to liquid ratio was found to be 1:8.Fig. 9


Mineralogy and uranium leaching of ores from Triassic Peribaltic sandstones.

Gajda D, Kiegiel K, Zakrzewska-Koltuniewicz G, Chajduk E, Bartosiewicz I, Wolkowicz S - J Radioanal Nucl Chem (2014)

Effect of liquid/solid ratio (vol./wt. basis) on uranium leaching efficiency (sample 21/10/141). Process conditions: particle size: 0–0.2 mm,10 % H2SO4, oxidizing agent: MnO2, 60 °C,1 h, agitation rate: 500 rpm
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4514638&req=5

Fig9: Effect of liquid/solid ratio (vol./wt. basis) on uranium leaching efficiency (sample 21/10/141). Process conditions: particle size: 0–0.2 mm,10 % H2SO4, oxidizing agent: MnO2, 60 °C,1 h, agitation rate: 500 rpm
Mentions: The selection of proper solid to liquid ratio (the weight of ores to volume of lixiviant) is important for optimization the leaching process. The effect of the solid to liquid ratio depends on e.g. grain distribution and free surface [19]. For this reason it was necessary to test the effect of solid to liquid ratio on leaching operations of Polish sandstones. This effect was significant as it shown on Fig. 9. The yield of uranium extraction increased with decrease of density of slurries. The optimum solid to liquid ratio was found to be 1:8.Fig. 9

Bottom Line: Satisfactory results were obtained for the alkaline leaching process.Almost 100 % of uranium was leached with alkaline carbonate solution.In post leaching solutions only uranium and small amounts of vanadium were present.

View Article: PubMed Central - PubMed

Affiliation: Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.

ABSTRACT

The recovery of uranium and other valuable metals from Polish Peribaltic sandstones were examined. The solid-liquid extraction is the first stage of the technology of uranium production and it is crucial for the next stages of processing. In the laboratory experiments uranium was leached with efficiencies 71-100 % by acidic lixiviants. Satisfactory results were obtained for the alkaline leaching process. Almost 100 % of uranium was leached with alkaline carbonate solution. In post leaching solutions only uranium and small amounts of vanadium were present.

No MeSH data available.


Related in: MedlinePlus