含镍污泥中镍的分离与提纯研究  

Separation and Purification of Nickel in the Nickel Sludge

作　　者：张文超 李殿秀 李晓娟 陈胜杰 赵永德[2] Zhang Wenchao Li Dianxiu Li Xiaojuan Chen Shengjie Zhao Yongde(Henan Tianchen Environment Protection Science ＆ Technology Co. Ltd.,Zhengzhou 451192, China Institute of Chemistry Henan Academy of Sciences,Zhengzhou 450002, China)

机构地区：[1]河南天辰环保科技股份有限公司,郑州451192 [2]河南省科学院化学研究所,郑州450002

出　　处：《河南科学》2016年第10期1696-1698,共3页Henan Science

摘　　要：通过对含镍污泥成分的分析,采用氨水/碳酸氨联合浸出的工艺对其进行处理,保持氨水质量分数为15%,固液比为1∶3,碳酸氨投加量为4%,浸出时间为150 min的条件下,含镍污泥中Ni的浸出率可达92.71%,随后外加0.05%Na_2S去除体系内的Cu、Zn等杂质,向滤液内缓慢投加Na_2CO_3溶液进行沉镍,所得产物经蒸发结晶后进行检测,其各项性能指标均符合国家所规定的各项指标.By the component analysis of the nickeliferous sludge,using ammonium hydroxide and carbonic acid to leach it,keeping the ammonia concentration is 15%,solid and liquid ratio is 1∶3,carbonic acid added amount is 4%,and the leaching time is 150 min,the leaching effciency of nickel in sludge can reach to 92.71%,then we remove the Cu and Zn by 0.05%Na2S added,and precipitate Ni by the Na2CO3 solution in filtrate added slowly,after evaporative crystallization,the detected results show the quality of product can reach to national standards.

关 键 词：含镍污泥 氨浸 综合利用 

分 类 号：X705[环境科学与工程—环境工程]