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投稿时间：2011-05-06
投稿时间：2011-05-06
中文摘要: 研究了重金属污泥中的4种重金属离子（Cu2+、Zn2+、Pb2+、Cd2+）的回收方法，考察了酸的种类、酸浓度、温度、时间、固液比对浸出效果的影响。结果表明，4 mol/L的HNO3与750 ℃焙烧3 h后的污泥在固液比1∶20，转速600 r/min，80 ℃下反应3 h，金属离子Cu2+、Pb2+、Zn2+、Cd2+的提取率分别为：92.0%、99.5%、99.5%、99.3%。
Abstract:The recovery of four metal ions, to be specific, Cu2+, Pb2+, Zn2+ and Cd2+ from heavy metals sludge was investigated. Effects of acid type, acid concentration, temperature, time and ratio of solid to liquid on leaching efficiency in acid leaching process were investigated. The results show that when the sludge calcined at 750 ℃ for 3 h is treated with 4 mol/L HNO3 (solid-to-liquid ratio is 1∶20) at 80 ℃ for 3 h under the rotation speed of 600 r/min, the leaching rate of Cu2+, Pb2+, Zn2+ and Cd2+ is 92.0%, 99.5%, 99.5%, 99.3%, respectively.
keywords: Sludge Heavy metals Calcination Acid leaching
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基金项目:教育部创新团队项目(IRT0974)
引用文本：
齐亚凤 何正艳 池汝安 余军霞.污泥中重金属的回收工艺研究[J].有色金属（冶炼部分）,2011(12):5-7.
QI Ya-feng, HE Zheng-yan, CHI ru-an, YU Jun-xia.Recovery of Heavy Metals from Sludge[J].Nonferrous Metals (Extractive Metallurgy),2011(12):5-7.
齐亚凤 何正艳 池汝安 余军霞.污泥中重金属的回收工艺研究[J].有色金属（冶炼部分）,2011(12):5-7.
QI Ya-feng, HE Zheng-yan, CHI ru-an, YU Jun-xia.Recovery of Heavy Metals from Sludge[J].Nonferrous Metals (Extractive Metallurgy),2011(12):5-7.
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