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铜冶炼污酸中砷的高效去除与稳定化是行业绿色发展面临的难题。现有石灰-铁盐法等虽能除砷，但会产生大量含砷废渣，存在二次污染风险。为实现“以废治废”，研究了采用铜尾渣处理污酸中的砷，通过双氧水协同氧化—沉淀机制，系统考察了初始pH、固液质量体积比、反应温度、反应时间及双氧水投加量对除砷效果及砷稳定性的影响。结果表明：在初始pH=0.65、固液质量体积比1g/8mL、反应温度60℃、反应时间10h、30%双氧水投加量2.0mL/100mL优化条件下，污酸中砷去除率达97%以上，处理后含砷尾矿的砷浸出浓度达标。该方法可实现污酸中砷的高效去除与固化，为铜尾渣的资源化利用及污酸处理工艺提供了新技术支撑。
Abstract：The efficient removal and stabilization of arsenic in copper smelting waste acid is a difficult problem for the green development of the industry.Although the existing lime-iron salt method can remove arsenic,it produces a large amount of arsenic-containing waste residue,which has the risk of secondary pollution.In order to achieve treating waste with waste,the treatment of arsenic in waste acid by copper tailings was studied.Through the synergistic oxidation-precipitation mechanism of hydrogen peroxide,the effects of initial pH,solid mass to liquid volume ratio,reaction temperature,reaction time and hydrogen peroxide dosage on arsenic removal and arsenic stability were systematically investigated.The results show that under the optimal conditions of initial pH=0.65,solid mass to liquid volume ratio of 1 g/8 mL,reaction temperature of 60℃,reaction time of 10h,and30% hydrogen peroxide dosage of 2.0 mL/100 mL,the removal rate of arsenic in waste acid reaches more than 97%,and the arsenic leaching concentration of arsenic-containing tailings after treatment reaches the standard.The method can realize the efficient removal and solidification of arsenic in waste acid,which provides a new technical support for the resource utilization of copper tailings and the treatment process of waste acid.
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基本信息:
DOI：10.13355/j.cnki.sfyj.2026.03.016
中图分类号:X758
引用信息:
[1]李建福,李安,戚永辉,等.铜尾渣去除铜冶炼污酸中的砷试验研究[J].湿法冶金,2026,45(03):408-415.DOI:10.13355/j.cnki.sfyj.2026.03.016.
基金信息:
云南省基础研究计划(202401BN070001-027)
2026-02-12
2026-02-12
2026-02-12