废铅膏内循环粒子研磨法脱硫实验  

Desulfurization Experiment of Damped Lead Paste Using Inner Loop Particle Grinding

作　　者：竹涛[1,2] 边文璟 李祥 景伟东[1] 张书庆 ZHU Tao;BIAN Wenjing;LI Xiang;JING Weidong;ZHANG Shuqing(School of Chemical & Environmental Engineering, China University of Mining & Technology(Beijing) Beijing 100083)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《工业安全与环保》2018年第2期93-96,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51108453);新世纪优秀人才支持计划(NCET120967);北京市优秀人才培养项目(2012ZG81);煤炭资源与安全开采国家重点实验室开放基金(SKLCRSM16KFA04);中央高校基本科研业务专项基金(2009QH03)

摘　　要：废铅酸蓄电池资源循环是国民经济的重要组成部分,对铅酸蓄电池破碎分选得到废铅膏进行预脱硫处理,再低温熔炼是一条公认的铅清洁回收工艺。为适应工业大规模生产,构建内循环研磨脱硫系统,在铅膏浆液罐内设置2个研磨脱硫器,脱硫器下部配置高速搅拌桨作为铅膏浆液循环流经脱硫器的动力源,脱硫器内设置螺旋导流板,并填充粒子作为研磨介质。采用(NH_4)_2CO_3做脱硫剂,实验研究了内循环研磨脱硫系统的铅膏脱硫性能,在转速600 r/min、温度40℃、浆液浓度40%~60%、摩尔比n((NH_4)_2CO_3)_n(PbSO_4)=1.1 1条件下,反应30 min,反应后固体含硫率小于0.3%。Lead-acid battery recycling is an important part of national economy,fragmentized separation of the lead-acid battery to scrap lead paste for desulfurization process,and the low temperature melting is recognized as a clean recycling process of lead.In order to adapt to the large-scale industrial production,the desulphurization system in internal circulation grinding is constructed and2grinding desulfurizers are set in slurry paste tank.The high speed stirring slurry is arranged in the lower part of desulfurization device,as the power source of paste slurry circulating through the desulfurizer and desulfurizing device arranged with spiral deflector,and also filled with particles as the abrasive medium.(NH4)2CO3is used as the sorbent,paste desulphurization experiments are conducted to study the performance of the internal circulation grinding desulfurization system.According to the experimental results,the process can maintain the sulfur content of lead paste under0.3%in30mins at the optimum reaction conditions,stirring rate600r/min,temperature40℃,the slurry concentration40%~60%and the molar ration n((NH4)2CO3):n(PbSO4)=1.1:1.

关 键 词：废铅膏 预脱硫 内循环 研磨 

分 类 号：X705[环境科学与工程—环境工程]