| 摘要 |
The improvement in the method of recovering copper from low grade ore containing oxidized copper ore which comprises establishing a dump of such ore in fragmented form, substantially completely wetting the ore in the dump with strong aqueous sulfuric acid containing at least about 100 g/l H2SO4, allowing the acid wetted ore to age for a period of at least about three days, thereafter washing the aged ore with dilute aqueous sulfuric acid containing about 5 to 40 g/l H2SO4, collecting such washings, and recovering copper therefrom. |
