电镀污泥铬回收工艺研究  

A Research of New Recovery Technology of Chromium from Electroplating Sludge

作　　者：庄永 朱军强 

机构地区：[1]昆山市千灯三废净化有限公司,江苏昆山215341 [2]东江环保股份有限公司,广东深圳518000

出　　处：《广东化工》2012年第17期104-105,共2页Guangdong Chemical Industry

摘　　要：本研究提出了在碱性条件下直接氧化浸出电镀污泥、净化除杂后制备中铬黄的新工艺。试验重点考察了氧化剂用量、浸出时间及反应温度对铬浸出率的影响,结果表明,控制氧化剂用量及浸出反应时间,能使铬的浸出率达到75.0%以上;含铬浸出液经净化除杂后,可以制得合格的中铬黄产品。A new technology of preparing medium chrome yellow from electroplating sludge is presented in the paper. The process included direct oxidalion and leaching of the electroplating sludge, impurity removal and purifcation. The study focused on testing the effect of amounl of oxidanl and reaction time on the leaching rate of Cr. The result indicated that the leaching rate of Cr could reach 75.0 % under the optimum amount of oxidant and reaction time： the qualified medium chrome yellow could be made from the impurity- removed leaching solution.

关 键 词：电镀污泥 铬回收 中铬黄 

分 类 号：TQ622.11[化学工程—精细化工]