铅酸电池企业含铅废料湿法再生新技术.pdf

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2014年第3卷第12期
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
3399
研究开发
铅酸电池企业含铅废料湿法再生新技术
喻文吴,张伟',李富元2,王进,孙晓娟,胡雅君,梁莎,杨家宽
华中科技大学环境科学与工程学院,湖北武汉430074;2湖北金洋治金股份有限公司,湖北襄阳41700)
摘要:铅酸蓄电池目前仍然占据二次电池的最大市场份额,其生产过程中产生的含铅废料的回收仍以危废公
收集后采用传统火法治炼再生为主,存在SO2污染严重、能耗高等问题。本文提出一种以柠檬酸结合水为浸
出剂的湿法回收含铅废料的新工艺,制备柠檬酸铅前体,经过低温焙获取新型超细铅粉,并对该工艺浸出反
应杋理进行了初步探讨。新工艺的脱硫率能够达到99.9%左右,柠檬酸铅前体经过375℃低温焙烧,可制备氧化
度超过93.0%的新型铅粉,与传统球磨氧化铅粉相比较,具有粒径较小、比表面积大等优点。新型铅粉经过循环
伏安法(CV)分析,初步显示出良好的充放电的循环可逆性,所制备铅粉可以直接回用制备新电池。本文的研
究为铅酸电池企业含铅废料的回收利用提供了一条新的途径.
关键词:含铅废料;湿法工艺;柠檬酸铅;超细铅粉
中图分类号:X705
文献标志码:A文章编号:1000-6613(2014)12-339-06
DOI:10.3969 J. Issn.1000-6013.2014.12.045
Hydrometallurgical recovery of discarded lead wastes in lead-acid
battery manufacturing
YU Wenhao, ZHANG Wei L Fuyuan, WANG in, SUN Xiaojuan HU Yajun LIANG Sha
YANGJ takuan
(School of Environmental Science and Engineering, Huazhong University of Science& Technology, Wuhan 430074
Hubei, China; Hubei Jinyang Metallurgical Incorporated Company Limited, Xiangyang 441700, Hubei, China)
Abstract: Lead-acid battery currently still occupies the largest market share among secondary batteries
The discarded lead wastes generated in its manufacturing process were mostly collected by hazardous
waste treatment company and recycled by pyrometallurgical process. Because of higher energy
consumption and SO2 pollution, a hydrometallurgical process was developed for recovering lead from
discarded lead wastes, using citric acid and ammonium hydroxide as leaching agent. The lead citrate
precursors were obtained and then calcined to produce novel ultrafine lead oxide powder. In thi
process, the desulfurization efficiency of around 99.9% could be achieved. Ultrafine lead oxide with
oxidizability more than 93.0% could be prepared by calcination of lead citrate precursors at a lower
temperature of 375 C. This novel lead oxide powder had the advantages of small size and high specific
surface area, compared with traditional lead oxide powder. CV tests showed that this novel lead oxide
powder exhibited good charge-discharge cyclic reversibility and could be directly used for preparation
of lead acid battery. A new route to recycle and reuse of discarded lead wastes from lead acid battery
收稿日期:2014-05-16;修改稿日期:2014-06-13
第一作者:崳文吴(1992一),男,硕士研究生,主要研究方向为固
基金项目:华中科技大学自主创新基金国际合作专项(201377GHO15)、废资源化与材料回收。E-mailwenhao(@hust.edu.cn。联系人:杨家
教育部新世纪人才支持计划(NCET-090392)及武汉市科技攻关计划宽,教授,博士生导帅,主要研究方向为固废资源化与材料回收。E-mail
(2013060501010168、2013011801010593、2014030709020313)项目。jiyang(@hust.edu.cno