Precipitation and purification of uranium from rock phosphate

AbowSlama, Elshafeea H. Y.; Ebraheem, Etemad; Sam, A.K.

doi:10.1007/s10967-013-2703-8

Cited by 19 publications

(7 citation statements)

References 15 publications

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“…8). Alternative processes can be used for uranium precipitation (or purification) of these precipitates using other precipitants such as saturated magnesia or ammonia (AbowSlama et al, 2014).…”

Section: Tablementioning

confidence: 99%

Integrated treatment of tailing material for the selective recovery of uranium, rare earth elements and heavy metals

Hamza

El-Aassy

Guibal³

2019

Minerals Engineering

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Processed ores may contain substantial amounts of residual valuable metals. In the case of the mining wastes issued from the exploitation of gibbsite bearing shale ore in the Southwestern Sinai, the characterization of the residue shows the presence of uranium, rare-earth elements (REEs), aluminum and zinc that can be valorized. Pug leaching at 120°C with an acid consumption of about 200 kg H 2 SO 4 per ton of ore succeeded in leaching more than 94% of U(VI) and REEs (in addition to substantial amounts of Al(III) and Zn(II)). A series of selective precipitation steps allowed successively recovering (almost quantitatively) Zn(II), Fe(III) and Al(III). In a second step, a magnetic resin has been used for enriching the pregnant leaching solution (by a factor close to 19) through sorption/desorption steps. In the last stage of the process, REEs were recovered by selective precipitation using 25% (w/w) oxalate solution at pH 1.5, while uranium was fully recovered by precipitation with NaOH at pH 9. Energy dispersive X-ray analysis performed on the different precipitates showed purity grades systematically superior to 93%.

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Section: Tablementioning

confidence: 99%

Integrated treatment of tailing material for the selective recovery of uranium, rare earth elements and heavy metals

Hamza

El-Aassy

Guibal³

2019

Minerals Engineering

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“…Some ores will be richer in certain trace elements than others. For instance, some post-Jurassic phosphates proved to have progressively heavier REE enrichments (Jiang et al, 2007), and PR ores in Quebrada del Hierro -Khalek et al, 2011;AblowSlama et al, 2014;Bunuş et al, 1994;Crouse and Brown, 1958;Ragheb and Khasawneh, 2010;Ulrich et al, 2014;c Bunuş et al, 1994;Krea and Khalaf, 2000;Lokshin et al, 2011;Pereira and Bilal, 2012;Preston et al, 1996;Wang et al, 2010Wang et al, , 2011d Van Kauwenbergh, 2006;Sadegh Safarzadeh et al, 2007;Syers, 2001;Van Kauwenbergh, 2002, 2006e Crouse and Brown, 1958;Weterings and Janssen, 1985;f Huang et al, 2010;Liu et al, 2008;Van Kauwenbergh, 2006;g Lu, 2010;Yang and Luo, 2013 , 2002). Though the average U content in PR is 0e390 ppm with a median of 61.8 ppm (Table 5), some Canadian commercial-rich ores have up to 15% (Ragheb and Khasawneh, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Many studies have discussed the feasibility of recovery of trace elements, including uranium (Abdel-Khalek et al, 2011;AblowSlama et al, 2014), rare earth elements (Habashi, 1985;Bunuş and Dumitrescu, 1992;Bunuş et al, 1994;Wang et al, 2010;Lokshin et al, 2011), vanadium (Crouse and Brown, 1958;Weterings and Janssen, 1985), magnesium (Liu et al, 2008;Huang et al, 2010), rubidium (Jandov a et al, 2012), and iodine (Yang and Luo, 2013), from PR, phosphoric acids, or other P-related products. Ulrich et al (2014) reviewed past uranium recovery experiences from PR and found that long-term contracts at guaranteed prices are necessary to promote investment and production of uranium from PR.…”

Section: Introductionmentioning

confidence: 99%

The potential for mining trace elements from phosphate rock

Chen

Graedel

2015

Journal of Cleaner Production

100

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“…The next step was the precipitation of precursors of yellow cake -U 3 O 8 . From acidic solutions, uranium is precipitated in the form of ammonium or sodium diuranate, uranium peroxide and uranium trioxide by the addition of neutralizers such as sodium hydroxide, magnesium oxide or aqueous ammonia (Figure 6) [34,35]. In all cases, the final product is yellow uranium salt, commonly known as yellow cake.…”

Section: Precipitation Of Uranium Yellow Cakementioning

confidence: 99%

Uranium in Poland: Resources and Recovery from Low-Grade Ores

Kiegiel¹,

Miśkiewicz²,

Gajda³

et al. 2018

Uranium - Safety, Resources, Separation and Thermodynamic Calculation

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The presented studies deal with an assessment of the possibility of uranium recovery from the low-grade uranium resources in Poland. Uranium was leached from the ground uranium ores with efficiencies in 81-100% range that depend on the type of ore and leaching solution used. In the next step, the post-leaching solution was treated by the solvent extraction or ion exchange chromatography to separate uranium from other metals present in the ore. The novel routes of leaching by using membrane methods were examined. The final product, "yellow cake," was obtained in precipitation step. The studies of precipitation of uranium as ammonium diuranate or uranium peroxide from diluted uranium solutions are presented in this chapter. The work was completed with tentative economic analysis and environmental impact assessment along with radiation protection issues connected to uranium production.

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Precipitation and purification of uranium from rock phosphate

Cited by 19 publications

References 15 publications

Integrated treatment of tailing material for the selective recovery of uranium, rare earth elements and heavy metals

Integrated treatment of tailing material for the selective recovery of uranium, rare earth elements and heavy metals

The potential for mining trace elements from phosphate rock

Uranium in Poland: Resources and Recovery from Low-Grade Ores

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