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Bioleaching was used in this paper to leach heavy metals from tailings; Static magnetic field was used to strengthen the leaching rate of heavy metal (such as As and Cu), under the conditions of magnetic induction intensity separately were 1 m T, 2 m T ,5 m T , 8 m T and 11 m T , The results showed that under the conditions of inoculum 10%, pulp density 5%, pH 2.0, leaching temperature 30℃, different magnetic induction intensity, the leaching rate of Cu and As were increased, the best magnetic induction intensity in bioleaching of Cu and As were all 11 m T.

Strengthening of bioleaching of Cu and As by Static Magnetic Field with Acidithiobacillus ferriooxidans in tailings