电解锰渣的无害化处理实验
Electrolytic Manganese Slag Harmless Treatment Experiment
殷皓 1娄伟 1周自力 1李星 1路鹏 1曹亚锋1
作者信息
- 1. 湖南省工业固废资源化与安全处置工程技术研究中心,湖南 长沙 410032;湖南省和清环境科技有限公司,湖南 长沙 410032
- 折叠
摘要
选取湖北某锰矿区的电解锰渣(EMR),通过稳定化实验和淋滤实验探究了电解锰渣两种无害化处理途径.稳定化实验结果表明:生石灰对EMR中Mn2+和NH4+的去除效果优于高炉矿渣、市政污泥及各类磷酸盐,生石灰添加质量分数大于 10%时才能将EMR中Mn2+和NH4+的质量浓度降至标准限值以下,稳定化效率最高分别达到 100%与 99.17%,而EMR的pH会高于标准限值.淋滤实验结果表明:采用去离子水和柠檬酸作为浸提剂对EMR淋洗 5d后,EMR中Mn2+和NH4+的质量浓度均低于标准限值,Mn2+和NH4+去除率最高分别为99.95%与99.49%,同时保证EMR的pH在限值范围内.
Abstract
Two harmless treatment methods for electrolytic manganese slag(EMR)from a manganese mine area in Hubei Province were explored through stabilization experiments and leaching experiments.The results of the stabilization experiment showed that the removal effect of quicklime on Mn2+and NH+4 in EMR was better than that of blast furnace slag,municipal sludge,and various phosphates.Only when the mass fraction of quicklime added was greater than 10%,could the mass concentration of Mn2+and NH+4 in EMR be reduced to below the standard limit.The highest stabilization efficiency reached 100% and 99.17%,respectively,while the pH of EMR would be higher than the standard limit.The results of the leaching experiment showed that after 5 days of leaching EMR with deionized water and citric acid as leaching agents,the mass concentrations of Mn2+and NH+4 in EMR were lower than the standard limit,and the highest removal rates of Mn2+and NH+4 were 99.95% and 99.49%,respectively,while ensuring that the pH of EMR was within the limit range.
关键词
电解锰渣/无害化处置/稳定化实验/淋滤实验Key words
Electrolytic manganese slag/Harmless treatment/Stabilization experiment/Leaching experiment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据