摘要
以铅膏和硫酸铅为原料,在柠檬酸—柠檬酸钠浸出体系中制备类似柠檬酸铅的前驱体,用TG-DSC分析其热分解行为,用SEM及EDS对煅烧前后物质的形貌及成分进行表征。结果表明,铅膏和硫酸铅制备的柠檬酸铅完全分解温度分别为420℃和370℃,两者均呈鳞片状,煅烧后前者的产物发生了团聚,后者呈较大的颗粒状。煅烧后的产物主要含有铅和氧两种元素。
With lead paste and lead sulfate as raw materials, the precursors similar to lead citrate were pre-pared with the leaching system of citric acid and sodium citrate. TG-DSC was applied to analyze the ther-mal decomposition behavior of the precursor. The morphology, size and composition prior to and after cal-cinations were characterized by means of SEM and EDS. The results show that the lead citrate from lead paste is completely decomposed at 420 ℃. The total decomposition temperature of the lead citrate from lead sulfate is 370 ℃, and both lead citrates have scaly structures. Agglomerate occurs in the former cal-cined products, while the products of the later are of large particles. The products after calcination mainly contain lead and oxygen.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2012年第11期59-62,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
湖北省教育厅优秀中青年人才项目(Q20091111)
关键词
废铅蓄电池
铅膏
硫酸铅
柠檬酸铅
湿法冶金
铅氧化物
spent lead acid batteryl lead paste
lead sulfate
lead citrate
hydrometallurgy
lead oxide
