Study on recovery of copper and zinc from cyanide lean solution in a smelting companyQin Guanglin, Li Guangsheng, Zhu Xingfu, Gao Tengyue, Chen Yanbo, Ji Qiang, Yu Congquan, Lu Zhongbo, Zhang Juntong, Xu Chao and Cai MingmingE3S Web Conf., 271 (2021) 04004DOI: https://doi.org/10.1051/e3sconf/202127104004