风化电镀污泥回收利用工艺研究  

Technical Study for Recycle of Weathered Electroplating Sludge

作　　者：岳琦[1] 刘三军 姚文明[1] 代江 焦芬[1] 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]湖南临武嘉宇矿业有限责任公司,湖南郴州424300

出　　处：《矿冶工程》2017年第4期86-88,共3页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(2005cb6237601)

摘　　要：以某多年堆积的电镀污泥为原料,采用重选脱泥除杂、氨法浸出工艺回收其中的铜镍,探究了碳酸铵用量、氨水浓度、液固比、浸出时间等对铜镍浸出率的影响,确定最优工艺条件为:氨水浓度15%、浸出时间120 min、碳酸铵用量100 g/t,液固比4∶1,此时Cu平均浸出率为85.05%,Ni平均浸出率为83.45%,实现了对该电镀污泥的回收利用。Some electroplating sludge stored in heaps for many years was taken as raw material in the test for recovering copper and nickel therein by using a process consisting of gravity desliming and ammonia leaching.The effects of ammonia concentration,liquid/solid ratio,dosage of ammonium carbonate and reaction time on the leaching rate of Ni,Cu were explored.It is found that an optimal process condition,including an ammonia concentration at 15%,120 min leaching with the dosage of ammonium carbonate at 100 g/t,liquid/solid ratio at 4∶1,resulted in an average leaching rate of Cu and Ni reaching 85.05% and 83.45%,respectively,indicating the recycling of such electroplating sludge can be actualized.

关 键 词：电镀污泥 氨法浸出 铜 镍 

分 类 号：TF111[冶金工程—冶金物理化学]