碳酸钠焙烧粉煤灰提铝研究  

Research on aluminum extracting by roasting coal ash with sodium carbonate

作　　者：黄前 邹丽霞[1,2] 兰鹏 陈芬 金智宇 张明鑫 张振 Huang Qian;Zou Lixia;Lan Peng;Cheng Fen;Jin Zhiyu;Zhang Mingxin;Zhang Zhen(Sate Key Laboratory of Nuclear Resources and Environment,East China University of Technology, Nanchang,Jiangxi 330013,China;School of Chemical Biology and Materials Science,East China University of Technology,Nanchang,Jiangxi 330013,China)

机构地区：[1]东华理工大学核资源与环境国家重点实验室,江西省南昌市330013 [2]东华理工大学化学生物与材料科学学院,江西省南昌市330013

出　　处：《中国煤炭》2019年第10期70-74,共5页China Coal

基　　金：江西省科技厅支撑项目(20151BBG70013);江西省科技厅工业支撑项目(20171BBE50031);核资源与环境国家重点实验室开放基金(NRE1408)

摘　　要：为了提取粉煤灰中的铝元素,采用碳酸钠与粉煤灰焙烧活化技术,经酸解、中和、过滤、碱沉淀、干燥、煅烧后合成氧化铝,并使用XRD扫描电镜和红外光谱对产品晶型、形貌和结构进行表征。研究结果表明,当碳酸钠与粉煤灰的原料比为1∶1(质量比)时,于马弗炉中以温度为700℃煅烧2 h,并采用浓度为4 mol/L的硫酸反应3 h后合成氧化铝,铝提取率达95%,合成的氧化铝为片状体。The authors extract aluminum from coal ash by activating and roasting coal ash with sodium carbonate, and synthesized alumina through acidolysis, neutralization, filtration, alkali precipitation, drying and calcination, and the crystal form, morphology and structure of the product were characterized by XRD SEM and infrared spectroscopy. The results showed that after roasting sodium carbonate and coal ash in muffle furnace for 2 h at 700 ℃ when the mass ratio of sodium carbonate and coal ash was 1∶1 and synthesizing alumina by reacting with sulfuric acid whose concentration was 4 mol/L for 3 h, the aluminum extracting yield was 95% and the synthesized alumina was slabbing.

关 键 词：粉煤灰 碳酸钠 焙烧 氧化铝 

分 类 号：TQ536.4[化学工程—煤化学工程]