Industrial copper slag is among the most important wastes to be evaluated in terms of containing valuable metals and the amount of waste approaching 30 million tons per year. Therefore, in this study, it was aimed to propose a feasible route for copper and zinc recovery from copper converter slag (CCS) by using choline chloride (ChCl) based deep eutectic solvent which is applied on this type of slag for the first time. During the leaching experiments with the pure ChCl-2urea mixture, temperature (25–95 °C), leaching duration (2–72 h), and pulp density (1/10–1/40 g/mL) were selected as the parameters to be investigated for Cu and Zn extraction. After the experimental results, the optimized conditions for the ChCl-2urea leaching process, which gave 89.9% Cu and 65.3% Zn extraction was found at 48 h, 95 °C, 1/20 g/mL pulp density with 600 rpm stirring speed. It is noted that the iron dissolution ratio is very low (max. 4.7%) under the selected conditions. At the end of the iron cementation stage, the total recovery efficiency as a pure metallic copper was 63%. The calculated activation energy for the dissolution of the copper and zinc from CCS is 8.86 kJ mol⁻¹ and 14.48 kJ mol⁻¹, respectively.

工业铜渣是最重要的待评价废物之一，含有价金属，每年产生的废物量接近3000万吨。因此，本研究旨在提出一条可行的路线，利用氯化胆碱（ChCl）基低共熔溶剂从铜转炉渣（CCS）中回收铜和锌，该溶剂首次应用于此类炉渣。在使用纯 ChCl-2urea 混合物进行浸出实验时，选择温度 (25–95 °C)、浸出时间 (2–72 h) 和纸浆密度 (1/10–1/40 g/mL) 作为参数研究铜和锌的提取。根据实验结果，发现了 ChCl-2 尿素浸出工艺的优化条件，在 48 小时、95 °C 下提取了 89.9% 的铜和 65.3% 的锌，1/20 g/mL 纸浆密度，600 rpm 搅拌速度。值得注意的是，在所选条件下，铁溶解率非常低（最大 4.7%）。在铁置换阶段结束时，纯金属铜的总回收率为 63%。从 CCS 中溶解铜和锌的计算活化能为 8.86 kJ mol^-1和 14.48 kJ mol ^-1分别。