粉煤灰渣提取氧化铝的实验研究  

Experimental study on the alumina extraction from fly ash cinders

作　　者：钞晓光 徐靓 李依帆 刘大锐 贾敏 Chao Xiaoguang;Xu Jing;Li Yifan;Liu Darui;Jia Min(Research and Development Center,Shenhua Zhungeer Energy and Resources Comprehensive Development Co.,Ltd.,Erdos 010300,China)

机构地区：[1]神华准能资源综合开发有限公司研发中心,内蒙古鄂尔多斯010300

出　　处：《轻金属》2020年第8期12-15,共4页Light Metals

摘　　要：粉煤灰渣作为电厂的主要固体排放物,其氧化铝含量大于40%。粉煤灰渣经研磨处理后,在0.5小时内,灰渣粒度减小幅度最大,1小时后,其粒度与粉煤灰的粒度相近。通过对不同研磨时间产生的灰渣分别进行溶出实验,结果发现,随着研磨时间的增加,粉煤灰渣的氧化铝溶出率也逐渐增大,经180℃溶出2h后,其溶出率可达97.58%,与粉煤灰的溶出率接近。这时,粉煤灰和粉煤灰渣联合使用。可为探索综合利用含铝资源提取氧化铝提供理论参考。As the main discharged solid of power plant,the content of alumina in fly ash cinders was more than 40%.After grinding,the particle size of fly ash cinders decreased the most within 0.5 hours,and was similar to that of fly ash after 1hour.The leaching tests were conductedon the fly ash cinders produced in different grinding time,and the results show that with the increase of grinding time,the alumina leaching rate of the fly ash increases gradually.After 2 hours of dissolution at 180℃,the leaching rate can reach 97.58%,which is close to that of the fly ash.At this time,the combined use of fly ash and fly ash cinders can provide a theoretical reference for the comprehensive utilization of aluminum resources to extract alumina.

关 键 词：粉煤灰渣 粒度 氧化铝 溶出率 

分 类 号：TF801.3[冶金工程—有色金属冶金]