氟化物对酸浸取沸腾炉渣中铝的影响  

Effect of Fluoride on Acid Leaching of Aluminum from Boiling Slag

作　　者：甘金华[1] 李进平[2] 侯浩波[2] 郑颖[2] 

机构地区：[1]中国水产科学研究院长江水产研究所,湖北荆州434000 [2]武汉大学资源与环境科学学院,湖北武汉430079

出　　处：《化工环保》2007年第5期473-476,共4页Environmental Protection of Chemical Industry

摘　　要：采用酸浸取法、加入助溶剂浸取沸腾炉渣中的铝,考察了各种因素对铝浸出率的影响。实验结果表明:在球磨时间为30min、固液比(沸腾炉渣质量与酸体积之比)为1∶7、硫酸浓度为4mol/L、浸取温度为107℃、浸取时间为120min的条件下,铝浸出率最高(为29.72%);KF,NH4F,NaF,CaF2等作助溶剂可明显提高铝浸出率,且助溶剂为CaF2时的铝浸出率最高,CaF2与沸腾炉渣的质量比为0.08时的铝浸出率大于75%。Aluminum in boiling slag was leached by acid leaching method with cosolvent. The factors affecting the leaching rate of aluminum were studied. The experimental results indicate that： Under the conditions of milling time 30 rain, ratio of solid to liquid （the ratio of boiling slag mass to acid volume） 1 ： 7, H2SO4 concentration 4 mol/L, leaching temperature 107 ~C and leaching time 120 min, the leaching rate of aluminum can reach the highest （29.72%） ; The cosolvents such as KF, NH4F, NaF and CaF2 can markedly increase the leaching rate of aluminum, and CaF2 has the best effect; The leaching rate of aluminum can come up to over 75 % when the mass ratio of CaF2 to boiling slag is 0.08.

关 键 词：沸腾炉渣 氟化物 铝 酸浸取 

分 类 号：X752[环境科学与工程—环境工程]