|Series||Technical bulletin (Canada. Mines Branch) -- 85|
|Contributions||Harrison, V.F., Gow, W.A., Hughson, M.R.|
Buy Factors influencing the application of bacterial leaching to a Canadian uranium ore (Technical bulletin) by V. F Harrison (ISBN:) from Amazon's Book Store. Everyday low Author: V. F Harrison. So the leaching of uranium ores which contain pyrite as an iron source is most economical. Otherwise one has to add pyrite or another source of iron. The technical set-up of uranium ore leaching may be the dump method, but sometimes a variation of this, so-called heap or basin leaching is applied. The ore is set up in basins. However, uranium leaching from ore on a large scale is widely practiced in the USA, South Africa, Canada and India. Insoluble tetravalent uranium is oxidized with a hot H 2 SO 4 /Fe 3+ solution to make soluble hexavalent uranium sulfate at pH and temperature 35°C (Crueger and Crueger, ). Bacterial extraction of metals is not a new technology as it has been in application for ore leaching for centuries, though the mechanism remained unknown. Specifically copper was recov-Preston Devasia is a senior lecturer at the Vellore Institute of Technology. He teaches and studies microbial biotechnology and diversity. K A Natarajan is.
A uranium-bearing quartz pebble conglomerate ore was used in this evaluation. The material was sourced from the Denison mine, Elliot Lake district of Ontario, Canada, where conventional uranium mineral processing has historically been combined with heap leaching and in situ stope leaching (Fisher, , MacGregor, , Campbell et al., ).The paleoplacer conglomerate is . Purchase Metallurgical Applications of Bacterial Leaching and Related Microbiological Phenomena - 1st Edition. Print Book & E-Book. ISBN , Fisher JR () Bacterial leaching of Elliot Lake uranium ore. Can Min Metall Bull – Google Scholar Harrison VF, Gow WA, Hughson MR () I. Factors influencing the application of bacterial leaching to a Canadian uranium ore. The bulk uranium extraction (U%) and U concentration data for the respective U-bearing minerals undergoing bio and chemical leaching at 30 °C and 48 °C are shown in Fig. 30 °C, the concentration of U in chemical leaching for uraninite, pitchblende and coffinite was , and g/l in 28 days, which equals an U extraction percentage of ∼36U%, ∼43U%, ∼33U% respectively (Fig.
In brief, it has been shown that in the bacterial leaching of synthetic chalcocite, the indirect mechanism of ferric leaching is paramount, while in the leaching of synthetic covellite the direct mechanism is important. The direct mechanism operates by preventing the accumulation of a protective layer of sulphur and by the depolarisation of. Bacteria - Bacteria - Bacteria in industry: Anaerobic sugar fermentation reactions by various bacteria produce different end products. The production of ethanol by yeasts has been exploited by the brewing industry for thousands of years and is used for fuel production. Specific bacteria carry out the oxidation of alcohol to acetic acid in the production of vinegar. Engineering design of microbiological leaching reactors. L.S. Gormely and R.M.R. Branion, Gormely Process Engineering and University of British Columbia, Canada Bacterial leaching of copper and zinc from a sulfide ore by a mixed culture of Thiobacillus ferrooxidans and Thiobacillus thiooxidans in laboratory scale and pilot plant scale columns. HEAP LEACHING In heap leaching the ore is arranged in heap and goes through the same treatment such a in slope leaching. The aqueous solution containing microorganisms works on the heap of ore and produces the leach liquor. The leach liquor is used for metal recovery. 25 HEAP LEACHING 26