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microbial leaching of uranium ore

Bacterial Leaching of Elliot Lake Uranium Ore

Bacterial Leaching of Elliot Lake Uranium Ore

Uranium may be leached to some extent in situ from the Blind River conglomerate uranium ores by using the products of bacterial activity from the bacterium Thiobacillus ferrooxidans This paper describes some of the laboratory techniques used to investigate the characteristics of the bacteria, and to utilize their properties in uranium leaching.

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A comparison of the uranium recovery from low-grade ore by .

A comparison of the uranium recovery from low-grade ore by .

Uranium can be released from sulfide minerals by direct and indirect bioleaching (Bosecker, 1997). In direct bioleaching, there is physical contact between the bacterial cell and the mineral sulfide surface. In indirect mechanism, the microorganisms need not be in direct contact with ore surface. In bacterial leaching of uranium ores, the

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Producing Copper Nature's Way: Bioleaching

Producing Copper Nature's Way: Bioleaching

As indicated above, bioleaching originated by the leaching of low-grade ore dumps, flotation tailings and other waste materials already in place. As the technology has progressed it has moved to more processing-amenable methods: i.e., leaching on a controlled leach pad (heap leaching) (See The Phelps Dodge Mine-for-Leach Project ) or in a .

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Bioleaching - Wikipedia

Bioleaching - Wikipedia

Bioleaching is the extraction of metals from their ores through the use of living organisms.This is much cleaner than the traditional heap leaching using cyanide. Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper, zinc, lead, arsenic, antimony, nickel, molybdenum, gold, silver, and cobalt

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Uranium Acid Leaching - Metallurgist & Mineral Processing .

Uranium Acid Leaching - Metallurgist & Mineral Processing .

Microbial Leaching (Bioleaching, Biomining .

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REVIEW Microbial Leaching of Uranium Ore

REVIEW Microbial Leaching of Uranium Ore

Vol. 21, No. 8 (2009) Microbial Leaching of Uranium Ore 5809. Harrison et al.9 reported the role of the iron oxidizing Acidithiobacillus ferrooxidans in leaching of uranium. The uranium ore was stacked in heaps, similar to dump leaching of low-grade copper ore and leached using an acidic ferric sulfate

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I. Factors influencing the application of bacterial .

I. Factors influencing the application of bacterial .

In the bacterial leaching of Elliot Lake ore, the over-all extraction rate that can be obtained is determined mainly by the particle size of the leach feed. On sizes coarser than 4 mesh, where 32 weeks or more is required to reach a uranium extraction of 70%, the extraction rate is related mainly to the rate at which the solutions penetrate the particle to depth.

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Bacterial Leaching of a Carbonate Bearing Uranium Ore .

Bacterial Leaching of a Carbonate Bearing Uranium Ore .

Bosecker K., Wirth G. (1980) Bacterial Leaching of a Carbonate Bearing Uranium Ore. In: Biogeochemistry of Ancient and Modern Environments. Springer, Berlin, Heidelberg

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Microbial Leaching of Uranium from Low Grade Ore and .

Microbial Leaching of Uranium from Low Grade Ore and .

Microbial Leaching of Uranium from Low Grade Ore and Waste Sample of Northern Part of Gabal Gatter, Egypt Using Penicillium Purpurogenium and Pseudomonas Fluorescens SHA 281 1Shimaa S. Hussien*, Osman A. Desouky1 Said E. Mohamadeyand 1 1Nuclear Materials Authority, P.O. Box 530 El-Maadi, Cairo, Egypt. *Corresponding Author: Shimaa S. Hussien

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Microbial Leaching of Uranium Ore - ResearchGate

Microbial Leaching of Uranium Ore - ResearchGate

Leaching rate of uranium from exhausted ore depended on both sulfuric acid concentration and microbial activity of bacteria isolated from acid mine drainage, formed on uranium deposit.

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Uranium Bioleaching - MINTEK | MINTEK

Uranium Bioleaching - MINTEK | MINTEK

A technology that has not been considered thus far is the tank bioleaching of uranium concentrates. In the 1990s, Mintek undertook extensive research into the bioleaching of typical Witwatersrand uranium- and gold-bearing ores and concentrates.

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A study of the bioleaching of a Spanish uranium ore. Part .

A study of the bioleaching of a Spanish uranium ore. Part .

Fig. 5. Effect of bacterial activity on uranium leaching using a natural culture at 35°C and 5% pulp density. 3. Results and discussion In industrial processes of percolation leaching, the solubilization of uranium is largely due to bioleaching [ 151. To confirm this, identical experiments were carried out, one

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Microbial Leaching - YouTube

Microbial Leaching - YouTube

Jun 10, 2013 · One more ore processing - Duration: . microbial ore leaching x264 - Duration: . 12:30. Uranium ONE mining and extraction.mp4 - Duration: 1:48. Mike Shahrokni Recommended for you.

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Bacterial leaching of waste uranium materials.

Bacterial leaching of waste uranium materials.

The effect of ferrobacteria and thiobacteria on the leaching of waste uranium materials from which 70-80% of uranium was previously leached by classical chemical hydrometallurgical procedure has been investigated. The bacteria used are found in the ore and the .

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Bacterial Leaching of Radioactive Conglomerates

Bacterial Leaching of Radioactive Conglomerates

Bacteria of the Ferrobacillus-Thiobacillus group -will effectively leach pyrite bearing radioactive conglomerates in abandoned underground workings. Uranium and rare earths can be produced from these ores at a cost comparable to conventional methods, operating solely by bacterial leaching. As an addition to an operating nine, costs can be quite low Thorium is also available for production from .

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Bioleaching of low-grade uranium ore using .

Bioleaching of low-grade uranium ore using .

Mar 09, 2010 · Bioleaching of uranium was carried out with Turamdih ore sample procured from Uranium Corporation of India Limited, Jaduguda. The bacterial strain that was used in the leaching experiments was isolated from the Jaduguda mine water sample.

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BIOMINING AND BIOLEACHING PDF

BIOMINING AND BIOLEACHING PDF

Dec 23, 2019 · Microbial Leaching (Bioleaching, Biomining). Microbial leaching is the process by which metals are dissolved from ore bearing rocks using microorganisms. . biomining has merely been used as a procedure in the processing of sulfide ores and uranium ore, but laboratory and pilot procedures already exist for the processing of silicate and oxide .

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Acid and ferric sulfate bioleaching of uranium ores: A .

Acid and ferric sulfate bioleaching of uranium ores: A .

Microbial community analyses of acidic mine waters from in situ uranium leaching indicate resemblance to bacteria commonly found in acid mine drainage (Coral et al., 2018). In the past, in situ acid leach uranium mines in Eastern Europe especially were controversial and abandoned as the Cold War ended. They have left an environmental legacy and .

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microbial mining of ore - Opass

microbial mining of ore - Opass

Microbial Leaching of Uranium Ore - IntechOpen. Sep 9, 2011 . roasting of low-grade ore was conducted at the Rio-Tinto mines. . oxidation rate of iron that may affect uranium''s microbial leaching.

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Application of United Nations Framework Classification .

Application of United Nations Framework Classification .

LEACHING OF URANIUM ORES Atmospheric leaching Pressure leaching In-situ leaching: suitable for the permeable ore bodies & underlying rocks which provide a barrier to solution Heap leaching – acidic, alkaline, bacterial

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Bacterial Leaching of a Carbonate Bearing Uranium Ore .

Bacterial Leaching of a Carbonate Bearing Uranium Ore .

Bosecker K., Wirth G. (1980) Bacterial Leaching of a Carbonate Bearing Uranium Ore. In: Biogeochemistry of Ancient and Modern Environments. Springer, Berlin, Heidelberg

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Microbial Leaching (Bioleaching, Biomining .

Microbial Leaching (Bioleaching, Biomining .

Microbial leaching of copper has been widely used in the USA. Australia, Canada, Mexico, South Africa and Japan. In the USA 200 tonnes of copper is recovered per day. Uranium Leaching Uranium leaching is more important than copper, although less amount of uranium is obtained than copper.

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Microbial Leaching of Uranium Ore - IntechOpen

Microbial Leaching of Uranium Ore - IntechOpen

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 leaching has been use as an alternative approach to conventional hydrometallurgical methods of uranium's extraction.

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Bioleaching of low-grade uranium ore using .

Bioleaching of low-grade uranium ore using .

Mar 09, 2010 · Bioleaching of uranium was carried out with Turamdih ore sample procured from Uranium Corporation of India Limited, Jaduguda. The bacterial strain that was used in the leaching experiments was isolated from the Jaduguda mine water sample.

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Microbial Leaching of Uranium Ore | IntechOpen

Microbial Leaching of Uranium Ore | IntechOpen

Microbial Leaching of Uranium Ore, Nuclear Power - Deployment, Operation and Sustainability, Pavel Tsvetkov, IntechOpen, DOI: 10.5772/17941. Available from: Hadi Hamidian (September 9th 2011).

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Microbial leaching of uranium and other trace elements .

Microbial leaching of uranium and other trace elements .

P. fluorescens grown with ore caused a change in pH in the growth medium from 4.7 to 9.3, which was significantly higher than for the other two species, for which pH was about 5.2. P. fluorescens was the only species that thrived and mobilized measurable amounts of U from the two ores, leaching out 0.001 0.005% of the total amount of U from both.

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Microbial Leaching of Uranium Ore | IntechOpen

Microbial Leaching of Uranium Ore | IntechOpen

Microbial Leaching of Uranium Ore, Nuclear Power - Deployment, Operation and Sustainability, Pavel Tsvetkov, IntechOpen, DOI: 10.5772/17941. Available from: Hadi Hamidian (September 9th 2011).

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I. Factors influencing the application of bacterial .

I. Factors influencing the application of bacterial .

In the bacterial leaching of Elliot Lake ore, the over-all extraction rate that can be obtained is determined mainly by the particle size of the leach feed. On sizes coarser than 4 mesh, where 32 weeks or more is required to reach a uranium extraction of 70%, the extraction rate is related mainly to the rate at which the solutions penetrate the particle to depth.

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Sequential Bioleaching of Phosphorus and Uranium

Sequential Bioleaching of Phosphorus and Uranium

In this research, phosphorus and uranium leaching was studied with bioleaching and chemical leaching, with the final objective to separate current leaching process with two-step sequential leaching. The first leaching step aimed to remove uranium to its own pregnant leach .

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Bacterial leaching of uranium ore from Figueira—PR, Brazil .

Bacterial leaching of uranium ore from Figueira—PR, Brazil .

A bacterial leaching program was carried out in order to evaluate the potential of applying this process to leach uranium from the ore of Figueira—PR, Brazil. The experiments were carried out in shake flasks, column percolation (laboratory and scmipilot scale) and in heap leaching.

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