Abstract: Using self-designed test equipment, a lab test was made on the uranium leaching adopting Thiobacillus ferrooxidans (T.f )that was separated from uranium ore samples and then purified and domesticated. A two-staged test of acidification and leaching on four samples achieved an average uranium leaching rate of 85.6％ by liquid and of 88.3％ by slag, an relatively ideal leaching result.

Key words: Thiobacillus ferrooxidans, Uranium leaching test, Acidification, Uranium ore