526 工程科学学报，第43卷.第4期 Waste water(450 L) Zinc oxide dust (100 kg) The first leaching The first leaching liquid The first leaching residue(41.36 kg) Zinc oxide dust (4.53 kg) The secondary cyclic leaching The secondary leaching residue The secondary leaching liquid (408 L) Fe Copper recovery Sponge copper (2.33 kg) H,02 The first arsenic removal ◆Iron oxide slag with arsenic (25.96 kg) Na:S The secondary arsenic removal Arsenic sulfide slag(2.47kg) Na,CO, Zinc precipitation Calcine Effluent (396 L) Zinc oxide(61.21 kg) Sponge copper (Cu40.75%) As4.57gL-、Cu0.49gL Cu Zn022gL-,H2S04223.36gL1 Waste water and Zinc oxide Zinc oxide dust Zn Arsenic sulfide slag (Zn79.89%) (As15.32%) 宽 As 3.26 mg-L-,Cu 2.63 mg-L- Zn 50.63 mg-L-,pH 6.5 As Iron oxide slag with arsenic Effluent (As12.96%) 图6污酸综合利用实验中试主要物料和金属走向 Fig.6 Flow chart of the main substances and metal trends in the pilot test of the comprehensive utilization of sewage acid 参考文献 (杨源，邓志敢，魏昶，等.利用湿法炼锌赤铁矿法沉铁渣制备铁 [1]Yang Y,DengZ G.We C,et al.Preparation of iron oxide red by 红工艺.工程科学学报，2020,42(10)：1325) sinking iron slag in zinc smelting hematite process.Chin J Eng, [2] Yin S H,Wang L M.Wu A X,et al.Progress of research in copper 2020,42(10):1325 bioleaching technology in China.Chin J Eng,2019,41(2):143参    考    文    献 Yang Y, Deng Z G, We C, et al. Preparation of iron oxide red by sinking  iron  slag  in  zinc  smelting  hematite  process. Chin J Eng, 2020, 42（10）: 1325 [1] （杨源, 邓志敢, 魏昶, 等. 利用湿法炼锌赤铁矿法沉铁渣制备铁 红工艺. 工程科学学报, 2020, 42（10）：1325） Yin S H, Wang L M, Wu A X, et al. Progress of research in copper bioleaching technology in China. Chin J Eng, 2019, 41（2）: 143 [2] Waste water (450 L) Zinc oxide dust (100 kg) The first leaching The first leaching liquid The first leaching residue (41.36 kg) The secondary cyclic leaching Zinc oxide dust (4.53 kg) The secondary leaching residue The secondary leaching liquid (408 L) Copper recovery Sponge copper (2.33 kg) Iron oxide slag with arsenic (25.96 kg) The first arsenic removal The secondary arsenic removal Arsenic sulfide slag (2.47kg) Zinc precipitation Calcine Effluent As 3.26 mg·L−1、Cu 2.63 mg·L−1 Zn 50.63 mg·L−1, pH 6.5 Effluent (396 L) Zinc oxide (61.21 kg) Fe H2O2 Na2S Na2CO3 Sponge copper (Cu 40.75%) Zinc oxide (Zn 79.89%) Iron oxide slag with arsenic (As 12.96%) Arsenic sulfide slag (As 15.32%) Waste water and Zinc oxide dust Cu As Zn As As 4.57 g·L−1、Cu 0.49 g·L−1 Zn 0.22 g·L−1, H2SO4 223.36 g·L−1 As removal Utilization 图 6    污酸综合利用实验中试主要物料和金属走向 Fig.6    Flow chart of the main substances and metal trends in the pilot test of the comprehensive utilization of sewage acid · 526 · 工程科学学报，第 43 卷，第 4 期