一种硫化铜矿石的浸出方法
By combining acidophilic iron-sulfur oxidizing microorganisms with chemical passivation layer removal agents, and using a microbial contact oxidation pond to treat copper sulfide ore, the limitation of the passivation layer on leaching efficiency was solved, and efficient copper mineral leaching was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2023-11-09
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the leaching efficiency of copper sulfide ore is insufficient due to the formation of a passivation layer. Existing methods cannot effectively control or remove the passivation layer, which limits the oxidation rate and leaching rate of copper minerals.
Acidophilic iron-sulfur oxidizing microorganisms combined with chemical passivation layer removal agents were used to treat copper sulfide ore through microbial leaching extract and passivation layer removal agents. Subsequently, contact oxidation was carried out in a microbial contact oxidation tank. Adsorption materials were used to adsorb microorganisms and sulfur intermediate products to achieve the removal and oxidation of the passivation layer.
It significantly improved the oxidation rate and leaching rate of copper minerals, with a copper leaching rate of up to 85.5%. The leaching effect of copper sulfide ore was enhanced through a combination of chemical and biological methods.