含锌漆渣热解物净化车间浸出液制备电积锌的研究
Study on Electrode-deposited Zinc After Workshop Leaching Solution Purification with Zinc-containing Pyrolytic Paint Residue
马黎阳 1张旭 2林琳 3高扬 4李金惠 5赵明6
作者信息
- 1. 清华大学 环境学院 北京 100084;鑫联环保科技股份有限公司 云南 661000
- 2. 清华苏州环境创新研究院 江苏 215163
- 3. 鑫联环保科技股份有限公司 云南 661000
- 4. 江西金铂铼资源循环新技术有限公司 江西 331302
- 5. 清华大学 环境学院 北京 100084
- 6. 清华大学 环境学院 北京 100084;清华苏州环境创新研究院 江苏 215163
- 折叠
摘要
将漆渣经高温热解处理脱除有害有机物组分,并替代商业金属锌粉用于置换脱除车间浸出液中的铅、镉杂质,净化后的溶液进一步生产电积锌.结果表明,采用 11 倍理论含量的热解漆渣在 70℃下分为三段置换去除铅镉杂质,对应浓度由 796 mg/L和 48 mg/L分别降低至1.2 mg/L和0.8 mg/L,净化后溶液电积的指标和车间生产电积锌相当.研究为含锌漆渣的资源化利用提供了新方向.
Abstract
The paint residue is subjected to high-temperature pyrolysis treatment to remove harmful organic components,and the pyrolyt-ic residue was used to replace metal zinc to remove Pb and Cd impurities.The purified leaching solution obtained was further used to produce elec-trode-deposited zinc.The results showed that the concentration of lead and cadmium were reduced from 796 mg/L and 48 mg/L to 1.2 mg/L and 0.8 mg/L,respectively,by three-stage replacement reaction at 70℃with 11 times the theoretical content of pyrolytic paint residue,remove lead and cad-mium impurities.In the electrode deposition operation after purification,the index is closed to that of workshop production of electrode-deposited zinc.The research provides a new direction for the resource utilization of zinc-containing paint slag.
关键词
含锌漆渣/热解/电积锌/车间浸出液/置换除杂Key words
Zn-containing paint slag/pyrolysis/electrode-deposited Zn/workshop leaching solution/impurities removal by replacement引用本文复制引用
出版年
2025
NETL
NSTL
万方数据