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以氧化锌烟尘浸出液沉锗后液为原料，氧化锌烟尘为中和剂，高锰酸钾为氧化剂，采用两段逆流中和工艺，实现湿法炼锌铁渣从源头减量。研究表明，在氧化锌烟尘用量5 g/L、反应温度80℃、中和反应时间1 h条件下，溶液砷含量从719.20 mg/L降低至8.60 mg/L,砷脱除率达到98.83%,渣量降低至8 g/L。渣经过艾萨炉炼铅系统处理，可实现锌、铅、锗有价金属的回收和砷的集中处置。
Abstract：Applying the liquid after germanium precipitation from zinc oxide dust leaching solution as raw material, zinc oxide dust as neutralizer and potassium permanganate as oxidant, the source reduction of iron residue in zinc hydrometallurgy was realized by two-stage countercurrent neutralization process.The results show that under the conditions including zinc oxide dust dosage of 5 g/L,reaction temperature of 80 ℃,and neutralization reaction time of 1 h, the arsenic content in solution drops from 719.20 mg/L to 8.60 mg/L with arsenic removal rate of 98.83%,and residue amount drops to 8 g/L.The residue is treated by lead smelting system in ISA furnace, which can realize the recovery of zinc, lead and germanium valuable metals and the centralized disposal of arsenic.
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基本信息:
中图分类号:X758
引用信息:
[1]邹维,刘俊场,付维琴,等.湿法炼锌铁渣源头减量技术[J].有色金属(冶炼部分),2023(07):5-8.
基金信息:
云南省基础研究-面上计划项目(202101AT070280); 云南省科技人才和平台计划项目(202305AD160053)
2023-06-30
2023-06-30