A study of the bioleaching of a Spanish uranium ore. Part I: …
That is to say, the bacterial leaching of uranium ores is a two-step process: the bacterial leaching of pyrite and the leaching of the uranium ore with the resulting metabolic products of the pyrite biological attack.
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Prediction of Uranium Transport in an Aquifer at a
Roll fronts are some of the most important uranium deposits and are quite common in the United States. Generally, a roll front has an oxidized zone and a reduced zone, the latter being the zone of high mineralization and a target for in situ recovery (ISR) mining. The challenge remains the gathering of information to enable making informed decisions regarding post …
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Microbiological leaching of uranium ores | Mining
Microbiological leaching has been used as an alternative approach to conventional hydrometallurgical methods of uranium extraction. In the microbiological leaching process, iron-oxidizing bacteria oxidize pyritic phases to ferric iron and sulfuric acid, and uranium is solubilized from the ore due to sulfuric acid attack.
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Recovery of uranium from phosphate ore in the Sheikh …
In this research, the recovery of uranium from the phosphate ore of the Sheikh Habil-Iran mine using flotation/calcination-leaching processes has been investigated.
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Microbial Leaching of Uranium Ore
In the microbiological leaching process, iron-oxidizing bacteria oxidize pyretic phase to ferric iron and sulfuric acid, and uranium is dissolved from the ore due to sulfuric acid attack.
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Sulfur enhancement effects for uranium bioleaching in …
The bulk or granular ores was subjected in the column bioleaching reactors, which is a typical dynamic process of liquid-solid multiphase reaction. If the uranium ore particles are …
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Recovery of uranium from phosphate ore in the Sheikh Habil …
In this research, the recovery of uranium from the phosphate ore of the Sheikh Habil-Iran mine using flotation/calcination-leaching processes has been investigated.
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Magnetic Separation of Impurities from Hydrometallurgy
The removal of iron ion from leaching solution is critical for the recovery of value metals, with the method of choice commonly being crystallization (precipitation). This paper summarized the new improvements in iron removal by precipitation methods in recent years and proposed a novel process, magnetic seeding and separation. The new process can promote …
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Rare Earth Elements Biorecovery from Mineral …
Rare earth elements (REEs) are critical raw materials and are attracting interest because of their applications in novel technologies and green economy. Biohydrometallurgy has been used to extract other base metals; …
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Uranium in Poland: Resources and Recovery from Low …
The scheme of the experimental set-up is presented in Figure 7. The sample of uranium ore with manganese dioxide, and a solution of 5% sulfuric acid, was placed in the stirred feed tank. Then, the suspension of uranium ore (feed) was transferred with a gear pump to the membrane contactor where the process of leaching was proceeded.
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Microbial Leaching of Uranium Ore
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Microbial Leaching of Uranium Ore
Microbial Leaching of Uranium Ore Hadi Hamidian Islamic Azad University, Qaemshahr Branch Iran 1. Introduction This chapter is a review of the microbiological leaching of uranium ores. Microbiological
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3,350 108,000 1.7 M
ores. The signiicant resources of uranium are also in unconventional raw materials, e.g. phos-phates, nonferrous metal ores, carbonates, monazite sands, black shales, hard coal and brown
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Chapter 4 Grade Ores
leaching solution used. In the next step, the post-leaching solution was treated by the sol-vent 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 exam-
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A study of the bioleaching of a Spanish uranium ore. Part I: A …
That is to say, the bacterial leaching of uranium ores is a two-step process: the bacterial leaching of pyrite and the leaching of the uranium ore with the resulting metabolic …
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Bioleaching of uranium from low-grade uranium ore with a …
Aiming at recovery of uranium (U) from low-grade uranium ore with a high fluorine content, column bioleaching of uranium extraction with an indigenous mesophilic consortium …
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Dorota Gajda
Uranium was leached from the ground uranium ores with efficiencies in 81– 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.
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Sulfur enhancement effects for uranium bioleaching in …
The bulk or granular ores was subjected in the column bioleaching reactors, which is a typical dynamic process of liquid-solid multiphase reaction. If the uranium ore particles are regarded as spherical, the leaching kinetics of uranium ore …
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Uranium in Poland: Resources and Recovery from Low-Grade Ores
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– range that …
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Uranium in Poland: Resources and Recovery from Low-Grade …
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 …
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Restoration of Uranium Tailings in the Mountains: A
In 1948, there was a uranium ore processing plant here. Uranium oxide was extracted from the ash of brown uranium-containing coals of the Sogutinsky deposit after their combustion (uranium oxide was extracted by leaching from the ash). In the Kadzhi-Say geochemical province, the radiation level is relatively low and ranges from 18 to 40 μR/h ...
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Uranium in Poland: Resources and Recovery from Low …
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- range that depend on the type of ore
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Bio Hydrometallurgical Technology, Application and Process …
Many studies indicate microbial leaching is more important in low-grade ore, ore sample collected from Mianhuakeng uranium mine located in northern Guangdong province in …
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Microbial Leaching of Uranium Ore
Publishing on IntechOpen allows authors to earn citations and find new collaborators, meaning more people see your work not only from your own field of study, but from other related fields too.
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Perspective of Obtaining Rare Earth Elements in Poland
The leaching reagent should be selected to fit specific characteristics of the source material, for example, acids are commonly used to extract REE from silicate ore mineral such as gadolinite, eudialite, and allanite, and the alkaline reagents and sulfuric acid are mainly used to leach REE from phosphate ore minerals like monazite and xenotime.
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Microbial Leaching of Uranium Ore
The uranium ore was st acked in heaps, similar to dump leaching of low-grade copper ore, and leached using an acid ic ferric sulfate solution at the Elliot Lake Mine, Ontario, Canada.
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Heap bioleaching of uranium from low-grade granite-type …
We evaluated uranium bioleaching from low-grade, granite-type uranium ore using mixed acidophilic microbes from uranium mine leachate.
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Microbiological leaching of uranium ores | Mining
Microbiological leaching has been used as an alternative approach to conventional hydrometallurgical methods of uranium extraction. In the microbiological leaching process, iron …
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Radon Release Features of Different Uranium …
This chapter attempts to introduce the development of a radon sampling device for the investigation of the return air shaft of mines. Also, different radon measurement methods were compared, which were based on …
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Bio Hydrometallurgical Technology, Application and Process
Many studies indicate microbial leaching is more important in low-grade ore, ore sample collected from Mianhuakeng uranium mine located in northern Guangdong province in China, leached by heap, by mixed microorganism of Acidithiobacillus Ferrooxidans and Leptospirillum Ferriphilum with 88.3% leaching efficiency . Uranium leaching takes places ...
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