铝-空气电池废电解液制备片状氧化铝的研究  

Preparation of Flake Alumina Using Aluminum-Air Battery Waste Electrolyte as Raw Material

作　　者：王丽君 武杏荣[1] 王艳茹 申星梅[1] 曹发斌[1] WANG Lijun;WU Xingrong;WANG Yanru;SHEN Xingmei;CAO Fabin(Key Laboratory of Metallurgical Emission Reduction&Resources,Ministry of Education,Anhui University of Technology,Ma’anshan 243002,China)

机构地区：[1]安徽工业大学冶金减排与资源综合利用教育部重点实验室,马鞍山243002

出　　处：《硅酸盐通报》2024年第4期1490-1498,共9页Bulletin of the Chinese Ceramic Society

摘　　要：以铝-空气电池废电解液为原材料,用硫酸铝调节pH值,用硫酸钾作为熔盐制备片状氧化铝(α-Al_(2)O_(3)),研究了合成温度、晶种添加量对α-Al_(2)O_(3)粉体体积分数、粒度大小及粒度分布的影响规律。通过X射线衍射仪、扫描电子显微镜和激光粒度仪等,对加入不同晶种量的α-Al_(2)O_(3)粉体的结构和形貌进行表征。结果表明,添加晶种后可以提高α-Al_(2)O_(3)粉体的体积分数,减小α-Al_(2)O_(3)粉体的粒度,使α-Al_(2)O_(3)粉体的粒度分布更集中,同时使α-Al_(2)O_(3)粉体更分散。此外,当晶种添加量为5%(质量分数)时,制备出的片状α-Al_(2)O_(3)的体积分数可达97.0%,平均粒度约为7.24μm。In this paper,the flaky alumina(α-Al_(2)O_(3))powder was prepared with using aluminum-air battery waste electrolyte as raw material,adjusting pH value with aluminum sulfate,and using potassium sulfate as molten salt.And the effects of synthesis temperature and crystal seed amount on the volume fraction,particle size,and particle size distribution ofα-Al_(2)O_(3) powder were studied.The structure and morphology ofα-Al_(2)O_(3) powder with different amounts of crystal seed were characterized by X-ray diffractometer,scanning electron microscopy,and laser particle size analyzer.The research results show that the volume fraction ofα-Al_(2)O_(3) powder increases,the particle size is reduced,the particle size distribution is more concentrated and the dispersity is better after adding crystal seed.In addition,when the crystal seed amount is 5%(mass fraction),the volume fraction of prepared flakyα-Al_(2)O_(3) can reach 97.0%,and the average particle size is about 7.24μm.

关 键 词：片状氧化铝 铝-空气电池废电解液 晶种 粒度 熔盐法 分散性 

分 类 号：X703[环境科学与工程—环境工程] TQ133.1[化学工程—无机化工]