高炉渣中回收高附加值硫酸铝铵的研究  

Study on Recovery of High Added Value Ammonium Alumfrom Blast Furnace Slag

作　　者：陈芳 甘城英 CHEN Fan;GAN Cheng-ying(Sichuan Forever Environmental Protection&Safety Consulting Co.,Ltd.,Sichuan Mianyang 621000;Sichuan Mei Fute Ecological Technology Co.,Ltd.,Sichuan Chengdu 610404,China)

机构地区：[1]四川久远环保安全咨询有限公司,四川绵阳621000 [2]四川美富特生态科技有限责任公司,四川成都610404

出　　处：《广州化工》2021年第16期86-88,共3页GuangZhou Chemical Industry

摘　　要：以硫酸铵为助剂,研究了其与高炉渣焙烧过程条件对渣中铝的提取的影响。结果表明最优的焙烧条件为400℃,焙烧45 min,此时铝的提取率约为85%。将浸出液在低温下结晶,结晶温度为10℃,结晶时间16 h,铝的结晶率为93%,通过焙烧浸出结晶工艺,铝的综合回收率达79%左右。通过本文方法获得的硫酸铝铵纯度达99.6wt%,达到了国家标准。通过本文的研究,为高炉渣的综合利用提供了新思路。The effects of roasting conditions on the extraction of aluminum from blast furnace slag with ammonium sulfate as reagent were studied.The results showed that the optimal calcination condition was 400℃for 45 min,and the extraction efficiency of aluminum was approximately 85%.The leaching solution was crystallized at low temperature,and the optimal crystallization conditions were 10℃for 16 h.The crystallization ratio of aluminum was 93%.Through the roasting leaching crystallization process,the comprehensive recovery of aluminum was around 79%.The purity of ammonium alum obtained by this method was up to 99.6wt%,which reached the national standard.Based on the results,a new idea for comprehensive utilization of blast furnace slag was provided.

关 键 词：高炉渣 硫酸铵 硫酸铝铵 结晶 

分 类 号：TF111[冶金工程—冶金物理化学]