Preparation of Pure Uranium, Thorium, and Yttrium Oxides from El-Garra El-Hamra Sulfate Leach Liquor

Abdellah, W. M.

doi:10.1134/s1066362220030078

Cited by 10 publications

(2 citation statements)

References 18 publications

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“…Further increase in the contact time to 7 and 10 min led to decrease in Ce stripping efficiency to 70.4 and 65.2% respectively. This may be due to transition of some Ce again to the solvent by increasing time [35].…”

Section: Effect Of Equilibrium Contact Timementioning

confidence: 99%

Cerium sulfate preparation from Egyptian monazite's rare earth cake for its application as corrosion inhibitor of aluminum alloy AA6061

et al. 2021

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Pure cerium sulfate was prepared from economic natural resources using Egyptian monazite rare earth cake. About 90% of the former was extracted by tri-butyl phosphate in kerosene at the optimum conditions: 15% solvent concentration, equilibrium pH of 1.7, equilibrium time 7 min and O/A ratio of 1/1. The aim of the present work was studying the corrosion inhibition properties of cerium sulfate towards aluminum alloy AA6061 in two solutions; 1.0 M disodium hydrogen orthophosphate and 3.5 % sodium chloride (simulation of sea water). The corrosion inhibition was evaluated using electrochemical techniques under different experimental conditions. The results showed that, in the presence of cerium sulfate, the AA6061 surface is well protected due to formation of passive film composed of Ce2O3/Ce(OH)3 which precipitated on the electrode surface.

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Section: Effect Of Equilibrium Contact Timementioning

confidence: 99%

Cerium sulfate preparation from Egyptian monazite's rare earth cake for its application as corrosion inhibitor of aluminum alloy AA6061

et al. 2021

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“…Depending on the mineral composition of uranium-bearing ores, leaching procedures may be carried out using an alkaline or an acidic route (Kim et al, 2014;Abdel Wahab et al, 2019), However, in most cases, U is extracted by acidic leaching (Abu Elatta et al, 2018;Xu et al, 2019) The acid way is usually considered non-selective and produces multi-metal solutions such as thorium, rare earth elements (REE), in addition to uranium. The treatment of acidic leach solution may involve a wide range of techniques including selective precipitations (Bhowmik et al, 2009 andEl-Ansary et al, 2018), solvent extraction (Singh andGupta 2008, Zhu et al, 2013;Avelar et al, 2017;Abdoul-Rachid, 2018 andAbdellah, 2020), and ion exchange resins (Danko et al, 2017;Abdel Aal and Abdel Samad, 2019).…”

Section: Introductionmentioning

confidence: 99%

Physical and chemical processes of Abu Rusheid cataclastic rocks for recovering niobium, zirconium, and uranium compounds

Abdellah¹,

Khalafalla²,

Khoziem³

et al. 2021

Physicochem. Probl. Miner. Process.

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Cataclastic rocks of Abu Rushied area (South Eastern Desert, Egypt) characterized by the presence of niobium, tantalum, zirconium minerals as well as uranium-thorium minerals. Physical upgrading process was applied using gravity and magnetic separation techniques to concentrate these economic minerals mainly to obtain the magnetic niobium concentrate at 0.2-0.5 ampere, beside the non-magnetic Zr and U at 1.5 ampere. The chemical processing upon niobium concentrate was performed using NH4F roasting process at 250ºC followed by selective precipitation of Nb as Nb-sulfide. An alkaline fusion using NaOH was applied upon zirconium concentrate at the optimum conditions of: zircon concentrate/ NaOH mass ratio 1/2, fusion temperature of 650ºC and 2.5h fusion time followed by selective precipitation of Zr as Zr-tartrate. Finally, two flowsheets were drawn summarizing the whole recovery processes.

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Processing of Abu Dob mineralized pegmatites, Central Eastern Desert, Egypt: a study on the kinetics of dissolution process and extraction of some valuable metals

Khoziem

2022

J Radioanal Nucl Chem

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Preparation of Pure Uranium, Thorium, and Yttrium Oxides from El-Garra El-Hamra Sulfate Leach Liquor

Cited by 10 publications

References 18 publications

Cerium sulfate preparation from Egyptian monazite's rare earth cake for its application as corrosion inhibitor of aluminum alloy AA6061

Cerium sulfate preparation from Egyptian monazite's rare earth cake for its application as corrosion inhibitor of aluminum alloy AA6061

Physical and chemical processes of Abu Rusheid cataclastic rocks for recovering niobium, zirconium, and uranium compounds

Processing of Abu Dob mineralized pegmatites, Central Eastern Desert, Egypt: a study on the kinetics of dissolution process and extraction of some valuable metals

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