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《Chinese Journal of Nuclear Science and Engineering》 2009-01
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Study of the sulfuric acid leaching and bacterial leaching of low grade uranium ore by orbital shaker experiment

LI Guang-yue,LIU Yu-long,WANG Yong-dong,DING De-xin (Key National Defense Laboratory for Bio-technology in Uranium Mining and Hydrometallurgy, University of South China,Hengyangof Hunan Prov.421001,China)  
The sulphuric acid leaching and bacteria leaching by orbital shaker experiments were conducted for the low grade uranium ore from a uranium mine in Guangdong Province.The results show that,when the concentration of sulphuric acid and that of slurry were 30 g/L and 25%,respectively,the conditions were most favourable for sulphuric acid leaching and the rate of leaching reached 92.92%,that,when pH value was 1.5,inoculation amount,10%,concentration of slurry,10%,the conditions were most favourable for bacteria leaching and the rate of leaching reached 95.93%,that,compared with sulphuric acid leaching,bacteria leaching decreased sulphuric acid consumption by 17.2% and increased the rate of leaching by 3%,and that,under the most favourable conditions for suphuric acid leaching,if 1% natrium chlorate was added,the rate of leaching increased to 96.46%,but 10 kg of natrium chlorate was consumed for 1 ton of uranium ore.
【Fund】: 湖南省自然科学基金资助项目(06JJ2037)
【CateGory Index】: TF18
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