废铅膏在碱性介质中的原子经济催化转化及可控结晶制备PbO的研究

项目名称： 废铅膏在碱性介质中的原子经济催化转化及可控结晶制备PbO的研究

项目编号： No.21476022

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 化学工业

项目作者： 潘军青

作者单位： 北京化工大学

项目金额： 40万元

中文摘要： 本项目针对现有废旧铅酸电池回收产生的日益严峻的环境问题，提出将废铅膏在碱性介质中通过Pb-PbO2原子经济反应,硫酸铅的同步脱硫反应和随后的PbO在NaOH溶液可控的结晶过程直接得到铅酸电池生产所需的活性α-PbO，从而大幅度减少现有回收铅需要冶炼-电解-熔化-球磨氧化多步骤带来的高能耗和高污染问题。 本项目拟在实现Pb-PbO2之间快速的原子经济催化转化和可控的α-PbO结晶过程为中心，系统地研究PbO转化过程的反应条件及其催化剂，揭示PbO浓度、NaOH浓度、温度和助络合剂等因素对PbO溶解-结晶过程的影响，以及PbO形貌结构和电化学性能之间的关系，构建PbO-NaOH-Na2SO4母液循环系统，研制出一套连续循环进行废铅膏一步转化得到铅酸电池生产所需的高纯度α-PbO的关键制备技术。本项目也将为其它涉铅企业的含铅废渣回收提供新的再生铅方法。

中文关键词： 资源综合利用；循环利用；氧化铅；原子经济法；可控结晶

英文摘要： Aiming at the increasingly serious environmental problem caused by recycle of waste lead acid batteries, this project proposes a new way to directly obtain the active alpha-PbO for the production of lead acid batteries through the Pb - PbO2 atomic economic reaction and PbSO4 synchronous desulfurization reaction in alkaline solution. This project will greatly reduce energy consumption and lead pollution in the existing process of long lead cycle mode. On the basis of our preliminary work on lead recovery, the project is planned to overcome the challenge of rapid Pb - PbO2 atomic economic transformation and controllable alpha PbO crystallization process as the core task. The project will systematically investigate the reaction conditions and catalysts for the PbO conversion process, reveals the effects of PbO concentration, NaOH concentration, temperature and co-complexing agent on the dissolution - crystallization process of PbO and the relation between PbO morphology structure and its electrochemical properties, and constructs PbO - NaOH - Na2SO4 mother solution circulation system. Thus a key technology to prepare high purity alpha-PbO as raw materials for the production of lead acid batteries with a continuous and one step conversion of lead plaster i will be developed. This project also provides a new lead r

英文关键词： comprehensive utilization of resources；Resource Recovery；Lead Oxide；Atomic economic method；Controlled crystallization