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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(英文),2017,46(10):3123~3128.[Zhao Panchao,Yi Wei and 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.]
Study on the preparation of spherical molybdenum powder by spray drying and microwave calcination
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Received:August 08, 2016  Revised:December 14, 2016
DOI:
Key words: Ammonium molybdate  molybdenum powder  spray drying  heating rate
Foundation item: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)
Author NameAffiliation
Zhao Panchao,Yi Wei and Chen Jialin  
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Abstract:
      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.
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