A new concept for copper (Cu) metal leaching by the simultaneous use of cupric ions (Cu²⁺) and oxygen (O₂) was proposed to improve Cu metal leaching in sulfuric acid. According to this concept, Cu²⁺ oxidizes Cu metal into cuprous ion (Cu⁺), and O₂ oxidizes Cu⁺ into Cu²⁺. The improvement in Cu leaching efficiency from Cu metal was investigated experimentally in the sulfuric acid solution using Cu²⁺ and O₂ simultaneously. Furthermore, the result was compared with that for the sulfuric acid solution containing neither Cu²⁺ nor O₂ and with the sulfuric acid solution without Cu²⁺ and O₂. When both Cu²⁺ and O₂ were used in the leaching solution, the leaching rate of Cu from Cu metal powder was higher than at other leaching conditions, and the leaching efficiency of Cu increased to more than 99.9% in 1 mol/L sulfuric acid solution at 400 rpm and 50 °C with ≤75 µm Cu metal powder, 1% pulp density, 10,000 mg/L initial Cu²⁺ concentration, and 100 cc/min O₂ introduction. These results indicated that the leaching of Cu from Cu metal could be accelerated by adding Cu²⁺ and O₂ in the sulfuric acid solution.

中文翻译：

---

同时使用氧和铜离子改善硫酸溶液中铜金属的浸出

提出了同时使用铜离子（Cu ²⁺）和氧（O ₂）浸出铜（Cu）金属的新概念，以改善硫酸中铜金属的浸出。根据该概念，Cu ²⁺将Cu金属氧化为亚铜离子（Cu ⁺），O ₂将Cu ⁺氧化为Cu ²⁺。同时在硫酸溶液中同时使用Cu ²⁺和O ₂，研究了从Cu金属中Cu浸出效率的提高。此外，将结果与不含Cu ²⁺和O ₂的硫酸溶液的结果进行比较。并使用不含Cu ²⁺和O ₂的硫酸溶液。在浸出液中同时使用Cu ²⁺和O _2时，Cu金属粉中Cu的浸出率高于其他浸出条件，在1 mol / L硫酸中Cu的浸出效率提高到99.9％以上。酸溶液在400 rpm和50°C的温度下，≤75 µm铜金属粉末，1％的纸浆密度，10,000 mg / L的初始Cu ²⁺浓度和100 cc / min的O ₂引入。这些结果表明，通过在硫酸溶液中添加Cu ²⁺和O ₂可以加速Cu从Cu金属中的浸出。