摘要
采用高温烧结、常压溶出的工艺提高铝灰中Al_2O_3的溶出率,并对影响铝灰中Al_2O_3溶出率的工艺条件进行了研究。实验结果表明,烧结过程和溶出过程对Al_2O_3的溶出率有着重要影响,且溶出Al_2O_3的最佳工艺条件为烧结温度750℃、m(NaOH)∶m(脱盐铝灰)=2.0∶1、烧结时间2h;溶出过程中m(水)∶m (熟料)=5∶1、溶出温度100℃、溶出时间30min时,Al_2O_3的溶出率最高,可达93.26%。
The high-temperature sintering and atmospheric pressure dissolution processes were used to increase the dissolution rate of Al2O3 in aluminum ash,and the process conditions affecting the dissolution rate of Al2O3 in aluminum ash were studied.The experimental results show that the sintering process and dissolution process have an important influence on the dissolution of Al2O3,and the best process conditions for the dissolution of Al2O3 are:the sintering temperature is 750℃,the alkali-ash ratio is 2.0∶1,and the time is 2 h;the ratio of liquid-solid in the dissolution process is 5∶1 and the dissolution temperature is 100℃,the time is 30 min.The leaching rate of Al2O3 is as high as 93.26%.
作者
欧玉静
李小龙
智鹏阔
朱江凯
朱小凡
OU Yujing;LI Xiaolong;ZHI Pengkuo;ZHU Jiangkai;ZHU Xiaofan(School of Petrochemical Technology,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《化工科技》
CAS
2018年第6期31-36,共6页
Science & Technology in Chemical Industry
基金
甘肃省重点研发计划项目--利用铝灰生产冶金级氧化铝产业化工艺开发(17YF1FA123)
甘肃省科技重大专项计划--铝灰全部循环利用关键技术开发与产业化项目(1502FKDB020)
关键词
铝灰
氢氧化钠
烧结
AL2O3
Aluminum ash
Sodium hydroxide
Sintering
Alumina
作者简介
欧玉静(1968-),女,河南郑州人,兰州理工大学副教授,硕士研究生导师,主要从事有色金属回收及纳米材料制备。
