废铅膏脱硫转化—草酸还原—煅烧制备氧化铅粉研究  

Study on Preparation of Lead Oxide Powder from Waste Lead Paste by Desulfurization Conversion,Oxalic Acid Reduction and Calcination

作　　者：贺山明[1] 陈文杰 杨敏[1] 汪诗琪 廖春发[1] 佟志芳[1] 邓庚凤[1] HE Shan-ming;CHEN Wen-jie;YANG Ming;WANG Shi-qi;LIAO Chun-fa;TONG Zhi-fang;DENG Geng-feng(Department of Materials Metallurgy Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000

出　　处：《有色金属（冶炼部分）》2020年第11期95-98,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金青年基金资助项目(51704133);2019年赣州市重点研发计划项目(赣市科发[2019]60号);江西理工大学校级大学生创新创业训练计划项目(DC2019-039)。

摘　　要：采用碳酸铵脱硫转化-草酸还原-低温煅烧工艺处理模拟废铅膏,系统考察了碳酸铵与硫酸铅摩尔比、反应时间、反应温度等条件对铅膏脱硫—还原及转化效果的影响,并低温煅烧制备氧化铅粉。结果表明:在较优工艺条件下,铅膏的脱硫率高达97.6%;控制摩尔比为2∶1和反应时间3 h,能将铅膏脱硫产物全部转化为草酸铅;获得的草酸铅在500℃煅烧5 h,可制备出外形规格均匀、颗粒尺寸较细的氧化铅细粉。Simulated waste lead paste was treated by ammonium carbonate desulfurization conversion,oxalic acid reduction,and low temperature calcination.Effects of molar ratio of(NH4)2 SO4/PbSO4,reaction time and reaction temperature on desulfurization reduction and conversion of lead paste were systematically investigated,and lead oxide powder was prepared by low temperature calcination.The results show that desulfurization rate of lead paste is as high as 97.6 % under the optimal process conditions.All desulfurization products of lead paste can be converted into lead oxalate when mole ratio of(NH4)2 SO4/PbSO4 is 2:1 and reaction time is 3 h.Fine lead oxide powder with uniform shape and fine particle size can be prepared by calcining lead oxalate at 500℃ for 5 hours.

关 键 词：废铅膏 氧化铅细粉 铅酸蓄电池 草酸还原 低温煅烧 

分 类 号：TF812[冶金工程—有色金属冶金]