Method for preparing inorganic powder through ultrasonic auxiliary drying and calcining
An inorganic powder and ultrasonic technology, applied in calcination, inorganic chemistry, chemical instruments and methods, etc., to achieve the effect of fine and uniform synthetic particle size, good dispersion state, and excellent properties
Inactive Publication Date: 2018-09-21
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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[0005] The present invention aims at the soft agglomeration that is easily produced in the drying and calcination preparation process of the existing inorganic powder, applies ultrasonic vibration during drying and calcination, and improves the drying and calcination process of the powder through ultrasonic vibration
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[0017] The invention provides a method for preparing inorganic superfine powder through ultrasonic assisted drying and calcination, the following specific implementation examples: Y 3 A 15 o 12 (yttrium aluminum garnet, referred to as YAG) powder preparation to further illustrate the present invention.
[0018] At normal pressure and room temperature, use a pipette to drop the YAG mixed salt solution into the precipitant AHC solution, keep the pH value of the reaction solution at about 8.0 by adding ammonia water dropwise, while stirring, and place the solution bottle in ultrasonic cleaning After the reaction, continue to stir for 2 hours and use ultrasonic waves for 24 hours, so that the reaction is completely carried out, and a uniform and relatively dispersed white precipitate is obtained, which is aged for 24 hours. The aged precipitation solution was washed 3 times with deionized water, 3 times with ethanol, and 1 time with acetone.
[0019] Place the white slurry prec...
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The invention discloses a method for preparing inorganic powder through ultrasonic auxiliary drying and calcining. The method comprises the following steps: in the process that inorganic powder is prepared by using a wet chemical method, synthesizing a precursor of the inorganic powder in an ultrasonic vibration environment, enabling a resistor to heat and dry the precursor in the ultrasonic vibration environment, and enabling the resistor to heat and calcine powder in the ultrasonic vibration environment, thereby synthesizing an expected inorganic crystal phase. On premise that key proceduresof a preparation process of the inorganic powder are not changed, a wet chemical synthesis atmosphere and drying and calcining methods and methods are changed, and then inorganic powder which is goodin dispersibility and excellent in property can be prepared.
Description
technical field [0001] The invention relates to a method for preparing inorganic ultrafine powder, in particular to a method for preparing dispersible ultrafine powder through ultrasonic assisted drying and calcination. Background technique [0002] Inorganic materials are generally made into devices or components through powder molding and sintering. The structure and performance of powder determine the performance of inorganic material devices or components. Ultrafine powder with excellent performance is the basis for preparing inorganic materials with good performance. Inorganic ultrafine powders are generally prepared by new chemical or physical methods. The chemical method has the advantages of high purity, easy control of shape, small particle size and relatively low cost in the preparation of inorganic ultrafine powder. [0003] Although there are many chemical or physical methods for preparing inorganic powders, most of them have problems such as coarse particle siz...
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Login to View More IPC IPC(8): C01F17/00B01J6/00
CPCB01J6/001C01F17/34C01P2002/72C01P2004/60
Inventor 邸永江陈俞江刘存禹孙睿王磊李成斌
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY