Chalcopyrite bio-dissolution plays an important role in the processing of copper sulfide ores. However, due to the slow dissolution rates of CuFeS₂, bio-dissolution processes have not yet found widespread application. In order to enhance the dissolution of chalcopyrite, a novel method for enhancing the dissolution using ozone was proposed and verified. The generated products in chalcopyrite dissolution process in the presence of Leptospirillum ferrooxidans and Acidithiobacillus thiooxidans was studied. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results indicate that a surface layer mainly consisting of jarosite and polysulfide (S_nⁿ⁻/S⁰) might be formed during biotic stage, which can be eliminated with the introduction of ozone. Electrochemical results show that ozone significantly increased the electrochemical reactivity of bioleached chalcopyrite, further proving that ozone enhanced the dissolution through destroying the surface layer. Hence, a bi-stage method for dissolution of chalcopyrite can be proposed.

黄铜矿生物溶解在硫化铜矿石的加工中起着重要作用。然而，由于CuFeS ₂的缓慢溶解速率，生物溶解过程尚未得到广泛应用。为了提高黄铜矿的溶解度，提出并验证了一种利用臭氧提高溶解度的新方法。研究了氧化亚铁钩端螺旋体和氧化硫硫杆菌存在下黄铜矿溶解过程中生成的产物。X 射线衍射 (XRD) 和 X 射线光电子能谱 (XPS) 结果表明，表面层主要由黄钾铁矾和多硫化物 (S _n ^n- /S ⁰) 可能在生物阶段形成，可以通过引入臭氧消除。电化学结果表明，臭氧显着提高了生物浸出黄铜矿的电化学反应活性，进一步证明臭氧通过破坏表层来增强溶解。因此，可以提出一种用于溶解黄铜矿的双阶段方法。