Separation and cyclic enrichment of valuable elements (Ga, Ge, In) from Zn vacuum smelting slag by stepwise leaching with sulfuric and acetic acid - Huazhen Cao; Canjiang Li; Junfeng Kong; Lining Yu; Anyang Tang; Jingnan Zheng; Zhengzheng Liu; Huibin Zhang; Guoqu Zheng (Hydrometallurgy, 2026)