Method for preparing Al2O3 by aluminium hydrolyzation by ultrasonic activation

The invention discloses a preparation method of Al2O3 by adopting ultrasonic waves to activate the hydrolization of metallic aluminum, that is, preparing high-purity alumina powder by adopting ultrasonic waves to activate the hydrolization of metallic aluminum; the preparation method is characterize...

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Bibliographic Details
Main Authors CHEN DONGHUA, WENG JIAFENG, ZHU XIAOQIN, HU JIN, SHEN LI
Format Patent
LanguageChinese
English
Published 31.12.2008
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:The invention discloses a preparation method of Al2O3 by adopting ultrasonic waves to activate the hydrolization of metallic aluminum, that is, preparing high-purity alumina powder by adopting ultrasonic waves to activate the hydrolization of metallic aluminum; the preparation method is characterized in that: high-purity metallic aluminum sheets, scraps and powder are taken as the raw material which is hydrolyzed in a pure aquatic system under the action of ultrasonic waves rather than other activation means, and the hydrolysis product is dried and processed by phase inversion to obtain the high-purity Al2O3 powder with different phase states. The preparation method does not need other chemical agents in the hydrolysis reaction process, has short process, low cost and no pollution and is suitable for mass production. The preparation method of the invention has significant technical progress and prominent substantial features and can bring about good economic and social benefits. A series of high-purity Al2O3
Bibliography:Application Number: CN200810058726