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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

Minimal and maximal values of efficiencies of leaching of metals from sandstones deriving from Peribaltic Syneclise (samples from different boreholes, min: sample 21/10/160, max: sample 21/10/140, see Table 2) under different process conditions: a 10 % HCl, 30 % H2O2, 60 °C, 1 h, agitation rate: 500 rpm; b 10 % H2SO4, MnO2, 60 °C, 1 h, agitation rate: 500 rpm
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Fig3: Minimal and maximal values of efficiencies of leaching of metals from sandstones deriving from Peribaltic Syneclise (samples from different boreholes, min: sample 21/10/160, max: sample 21/10/140, see Table 2) under different process conditions: a 10 % HCl, 30 % H2O2, 60 °C, 1 h, agitation rate: 500 rpm; b 10 % H2SO4, MnO2, 60 °C, 1 h, agitation rate: 500 rpm

Mentions: The uranium recovery with 10 % hydrochloric acid at 60 °C was very efficient (Fig. 3a). The results of experiments revealed that extraction efficiency of uranium range from 79 to almost 100 %. The other metals were recovered with efficiencies, as follows: Th: 30–64 %, Cu: 20–86 %, Co: 8–74 %, La: 29–86 %, V: 29–60 %, Yb: 27–88 %, Fe: 25–56 %. Experiments with 10 % sulphuric acid as leach agent was carried out at 60 °C. As it can be observed in Fig. 3b, uranium was leached with efficiency 71–100 % and efficiencies of leaching other metals were: Th:13–62 %, Cu 10–67 %, Co: 8–57 %, La: 24–60 %, V: 28–58 %, Yb: 26–67 %, Fe: 11–47 %.Fig. 3


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)

Minimal and maximal values of efficiencies of leaching of metals from sandstones deriving from Peribaltic Syneclise (samples from different boreholes, min: sample 21/10/160, max: sample 21/10/140, see Table 2) under different process conditions: a 10 % HCl, 30 % H2O2, 60 °C, 1 h, agitation rate: 500 rpm; b 10 % H2SO4, 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

Fig3: Minimal and maximal values of efficiencies of leaching of metals from sandstones deriving from Peribaltic Syneclise (samples from different boreholes, min: sample 21/10/160, max: sample 21/10/140, see Table 2) under different process conditions: a 10 % HCl, 30 % H2O2, 60 °C, 1 h, agitation rate: 500 rpm; b 10 % H2SO4, MnO2, 60 °C, 1 h, agitation rate: 500 rpm
Mentions: The uranium recovery with 10 % hydrochloric acid at 60 °C was very efficient (Fig. 3a). The results of experiments revealed that extraction efficiency of uranium range from 79 to almost 100 %. The other metals were recovered with efficiencies, as follows: Th: 30–64 %, Cu: 20–86 %, Co: 8–74 %, La: 29–86 %, V: 29–60 %, Yb: 27–88 %, Fe: 25–56 %. Experiments with 10 % sulphuric acid as leach agent was carried out at 60 °C. As it can be observed in Fig. 3b, uranium was leached with efficiency 71–100 % and efficiencies of leaching other metals were: Th:13–62 %, Cu 10–67 %, Co: 8–57 %, La: 24–60 %, V: 28–58 %, Yb: 26–67 %, Fe: 11–47 %.Fig. 3

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