云南某湿法炼锌厂氧压浸出炼锌过程中，产生了大量含银锌硫渣。为有效回收锌硫渣中的银，系统地探究了硫脲法浸出回收银的工艺参数。研究结果揭示，硫脲法浸出银具有显著的化学反应驱动力，硫脲在银表面的结合能为83.9 kJ/mol；在液固比为8：1、硫脲用量为10g/L、浸出时间为2h、浸出温度为50C、pH值为1.5、Fe*浓度为0.3 mol/L的条件下，银浸出率可达85.71%。研究结果不仅为锌硫渣中银资源的高效回收提供了科学依据，同时也为硫脲法在湿法炼锌工艺中的进一步应用提供了理论支撑，对于推动湿法炼锌工艺中银资源的综合回收与利用具有重要意义，有望为企业创造更大的经济效益。

During the oxygen pressure leaching process for zinc refining in a hydrometallurgical zinc-refining plant in Yunnan,  large quantities of silver-bearing zinc-sulfur residue are produced. To effectively recover silver from this residue, the process parameters of silver recovery via thiourea leaching were systematically investigated. The results revealed that thiourea leaching has a significant chemical reaction driving force, with a binding energy of83.9 kJ/mol on the silver surface. Under optimal conditions of a liquid-solid ratio of 8: 1, thiourea dosage of 10 g/L, leaching time of 2 h, leaching temperature of 50 °C, pH value of 1.5, and Fe* concentration of 0.3 mol/L, a silver leach-ing rate of 85.71 % was achieved. The study provides a scientific basis for efficient silver recovery from zinc-sulfur resi-due and theoretical support for the further application of the thiourea method in hydrometallurgical zinc-refining pro-cesses. This approach contributes to the comprehensive recovery and utilization of silver resources in hydrometallurgi-cal zinc production and has the potential to generate significant economic benefits for enterprises.