回收粉煤灰中未燃尽碳的浮选试验研究  

Study of Flotation Experiments on Carbon Recycled from Fly Ash

作　　者：李京芳[1] 朱申红[1] 陈国栋[1] 朱敏聪[1] 

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《中国资源综合利用》2007年第11期7-9,14,共4页China Resources Comprehensive Utilization

基　　金：山东省科技厅攻关项目(031060112);国家建设部项目(05-k4-53)

摘　　要：针对山东省胶南市双星热电厂产生的粉煤灰含碳量高而不能直接利用的现状,对其进行了浮选脱碳试验研究。通过小型浮选试验,确定了"一粗,一扫"的浮选流程,浮选脱碳后尾灰烧失量降低为4%以下,精碳Ⅰ烧失量达70%以上,精碳Ⅱ烧失量在45%以上,所得两种精碳的总碳回收率可达85%以上。This paper aimed to the condition that wet discharge fly ash in Jiaonan which have high unborn carbon that can＇t be utilized.Based on the study of physical and chemical character,mini-floatation experiment and continuous dressing experiment was done.In mini-floatation experiment, floatation flowsheet is determined by condition experiment.The floatation flowsheet is one course, one sweeping.The results of mini-floatation experiment show that 70% coal content of concentrate coal Ⅰ ,45% coal content of concentrate coal Ⅱ low 4% coal content of tailing ash were got from fly ash.The total carbon recovery is over 85%.

关 键 词：粉煤灰 浮选 脱碳 

分 类 号：X773[环境科学与工程—环境工程]