矿产综合利用2025，Vol.46Issue(2)：37-42,6.DOI:10.3969/j.issn.1000-6532.2025.02.006
二次铝灰中氮化铝的脱除与铝资源回收
Removal of Aluminum Nitride from Secondary Aluminum Ash and its Aluminum Recovery
丘能 1林宏飞 1陆立海 1杨崎峰 1周郁文1
作者信息
- 1. 广西博世科环保科技股份有限公司,广西 南宁 530006
- 折叠
摘要
Abstract
The aluminum nitride in the secondary aluminum(Al)dross release ammonia gas when it contacts with water.Therefore,the aluminum nitride poses a serious security threat to the environment.Denitrification is an important way to realize the harmless and resource utilization of secondary aluminum ash.A denitrification process of secondary Al ash was developed in this study.The influences of reaction temperature,reaction time,liquid-solid ratio on the denitrification ratio of secondary Al ash were explored,and the recycling rate of aluminum was also investigated.The results showed that satisfactory denitrification results can be achieved by keeping reaction temperature at 80～95 °C for 3～5 h,and controlled liquid-solid ratio at(4～12):1,the maximum denitrification ratio can reach 97.5%.Considered cost and treatment efficiency,the recommended denitrification parameters were 80 °C,3 h and liquid-solid ratio of 6:1,and the aluminum loss rate decreased from 5%to 0.29%at these conditions.The denitrification process developed in this study has demonstrated its advantages in lower cost and higher efficiency,and it can further reduce the loss of aluminum resources to improve its reutilization.关键词
二次铝灰/脱氮/损失率/铝回收Key words
Secondary Al ash/Denitrification/Loss rate/Aluminum recovery分类
矿业与冶金引用本文复制引用
丘能,林宏飞,陆立海,杨崎峰,周郁文..二次铝灰中氮化铝的脱除与铝资源回收[J].矿产综合利用,2025,46(2):37-42,6.
