赵盘巢,易伟,陈家林.喷雾干燥结合微波煅烧法制备微米级球形钼粉的研究[J].稀有金属材料与工程,2017,46(10):3123~3128.[Zhao Panchao,Yi Wei,Chen Jialin.Study on the preparation of spherical molybdenum powder by spray drying and microwave calcination[J].Rare Metal Materials and Engineering,2017,46(10):3123~3128.]
喷雾干燥结合微波煅烧法制备微米级球形钼粉的研究
投稿时间:2016-08-08  修订日期:2016-12-14
中文关键词:  仲钼酸铵  钼粉  雾化干燥  升温速率
基金项目:云南省科技计划项目-重点新产品(项目号2016BA001),云南省引进海外高层次人才项目(13020149)
中文摘要:
      本文以仲钼酸铵(优级纯)为原料,通过结合气流式雾化干燥法和微波煅烧氢还原法制备出球形、微米级、比表面积大、分散性好的钼粉。重点研究雾化造粒过程和微波煅烧氢还原阶段的升温速率对最终Mo粉的形貌、粒度以及比表面积的影响及规律。研究结果表明,控制一定的参数可以制备出球形、微米级、分散性好的钼酸铵前驱体粉末;最终Mo粉的微观形貌受升温速率的影响,升温速率越低制备的Mo粉破碎越严重,且有少量团聚现象,升温速率越高制备的Mo粉球形度越高,分散性越好;升温速率也直接影响平均粒度和比表面积,升温速率越低,平均粒度越小,而比表面积越大,升温速率越高,平均粒度相应增大,比表面减小。
Study on the preparation of spherical molybdenum powder by spray drying and microwave calcination
英文关键词:Ammonium molybdate  molybdenum powder  spray drying  heating rate
英文摘要:
      In this paper ,the molybdenum powder of spherical, micron size, large specific surface area and good dispersion was prepared by spray drying and microwave calcination, and ammonium paramolybdate (GR pure) as raw material. The effect of spray drying and heating rate of microwave calcination on the surface morphology, particle size and specific surface area of the final Mo powder was studied. Research results show that the Mo precursor powder of spherical, micron size and good dispersion was prepared by controlling parameters. The micro morphology of the final Mo powder is affected by the heating rate. When the heating rate is low, the Mo powder is broken more serious and had a small amount of aggregation . The Mo powder with well spherical and good dispersion was prepared, when the heating rate is becoming higher. The heating rate also directly affects the average particle size and specific surface area. The lower the heating rate, the smaller the average particle size, and the larger the specific surface area. The average particle size is becoming bigger and the specific surface area is becoming smaller when the heating rate is higher.
作者单位E-mail
赵盘巢 昆明贵金属研究所 稀贵金属综合利用新技术国家重点实验室 564070695@qq.com 
易伟 昆明贵金属研究所 稀贵金属综合利用新技术国家重点实验室  
陈家林 昆明贵金属研究所 稀贵金属综合利用新技术国家重点实验室  
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